ISOMETER® IRDH575

Insulation monitoring device for IT AC and DC sys-

tems with integrated test generator and controller
for EDS46..., EDS47... and EDS49... systems
Software version: D0185 V1.80

IRDH575_D00089_05_M_XXEN/01.2020 Manual EN
Table of Contents
1. Important information .................................................................................... 8
1.1 How to use this manual ................................................................................. 8
1.2 Technical support: service and support ................................................... 9
1.2.1 First level support ............................................................................................. 9
1.2.2 Repair service ..................................................................................................... 9
1.2.3 Field service ..................................................................................................... 10
1.3 Training courses ............................................................................................. 10
1.4 Delivery conditions ....................................................................................... 10
1.5 Inspection, transport and storage ........................................................... 11
1.6 Warranty and liability ................................................................................... 11
1.7 Disposal ............................................................................................................ 12
2. Safety instructions ......................................................................................... 13
2.1 General safety instructions ........................................................................ 13
2.2 Work activities on electrical installations ............................................. 13
2.3 Device-specific safety information ......................................................... 14
2.4 Use for the intended purpose ................................................................... 16
3. Function ........................................................................................................... 17
3.1 General characteristics ................................................................................ 17
3.2 Essential functions of the ISOMETER® .................................................... 17
3.3 Essential functions of the Insulation fault location system (EDS) 18
3.4 Product description ...................................................................................... 18
3.5 Function ............................................................................................................ 19
3.5.1 Current output for external measuring instrument ......................... 20
3.5.2 Real-time clock ............................................................................................... 20
3.5.3 Insulation fault location .............................................................................. 20
3.5.4 Interconnected systems ............................................................................. 21

IRDH575_D00089_05_M_XXEN/01.2020 3
 Table of Contents

3.5.5 Function input F1/F2 for connection or disconnection of IT systems

being monitored ........................................................................................... 22
3.5.6 ISOnet function for central control of the insulation monitoring
process when several IRDH575 are interconnected in IT systems ....
24
3.5.7 Self test .............................................................................................................. 26
3.5.8 Relay K3: device fault alarm and EDS common message ............... 28
4. Connection ..................................................................................................... 29
5. Commissioning flow chart ........................................................................... 33
5.1 Commissioning of the ISOMETER® function range (1) ..................... 33
5.2 Commissioning of the insulation fault location function (EDS) (1) ...
35
6. Operation and setting .................................................................................. 38
6.1 Operating features and displays IRDH575 ........................................... 38
6.1.1 Display in case of active EDS and detected fault ............................... 40
6.1.2 Display in the menu mode ......................................................................... 41
6.1.3 Function keys .................................................................................................. 41
6.2 Menu structure and menu mode ............................................................ 44
6.2.1 Diagram menu structure ............................................................................ 46
6.3 HISTORY INFO menu .................................................................................... 48
6.3.1 Diagram HISTORY INFO ............................................................................... 49
6.4 ISO SETUP menu: Setting of the basic ISOMETER® functions ........ 50
6.4.1 Response values Alarm 1 and Alarm 2 ................................................... 50
6.4.2 Starting the EDS system via the response values ALARM 1 and
ALARM 2 ........................................................................................................... 50
6.4.3 Operating principle of the alarm relays ................................................ 51
6.4.4 Memory setting (on/off) .............................................................................. 53
6.4.5 Current output for external measuring instruments ........................ 54
6.5 ISO ADVANCED menu: Setting of the extended functions ............ 55
6.5.1 External coupling device (AGH: no = factory setting) ..................... 55
6.5.2 Selecting the system leakage capacitance range .............................. 55

4 IRDH575_D00089_05_M_XXEN/01.2020
Table of Contents

6.5.3 Changing the measuring principle from AMP to DC

(Measure: AMP) .............................................................................................. 55
6.5.4 Setting the repetition time for automatic self tests
(Autotest: 24h) ................................................................................................ 55
6.5.5 Setting the real-time clock (Clock) .......................................................... 55
6.5.6 Setting the date (Date) ................................................................................ 56
6.5.7 Specifying the starting time of the automatic self test (Test) ....... 56
6.5.8 Diagram ISO ADVANCED ............................................................................ 57
6.6 EDS-SETUP menu: Settings for fault location ...................................... 58
6.6.1 EDS auto / on / off / pos / 1cycle ............................................................. 58
6.6.2 Diagram EDS-SETUP ..................................................................................... 59
6.6.3 System DC / 1 AC / 3 AC .............................................................................. 60
6.6.4 maxPuls 1 / 2.5 / 10 / 25 / 50 mA: ............................................................ 60
6.6.5 K3 alarm: ON ................................................................................................... 63
6.7 EDS460/490 menu ........................................................................................ 63
6.7.1 General .............................................................................................................. 63
6.7.2 Channel ............................................................................................................. 64
6.7.3 Relay ................................................................................................................... 67
6.7.4 EDS Test ............................................................................................................ 68
6.7.5 EDS Reset .......................................................................................................... 68
6.7.6 Diagram EDS46… /49… with Relay, EDS-Test and EDS-Reset ..... 69
6.8 EDS 470 menu ................................................................................................ 70
6.8.1 EDS Monitor .................................................................................................... 70
6.8.2 EDS Test ............................................................................................................ 70
6.8.3 EDS Reset .......................................................................................................... 70
6.8.4 Details about the menu points Relay, Memory and n-peak .......... 71
6.8.5 Diagram EDS 470 ........................................................................................... 72
6.8.6 Relay ................................................................................................................... 73
6.8.7 Memory ............................................................................................................ 73
6.8.8 CT Setup: .......................................................................................................... 73
6.8.9 n-peak: ............................................................................................................... 74
6.9 COM SETUP menu: Setting the BMS interface .................................... 75

IRDH575_D00089_05_M_XXEN/01.2020 5
 Table of Contents

6.9.1 Bus address (Addr: ) ................................................................................... 75

6.9.2 ISO Monitor ...................................................................................................... 75
6.9.3 ISOnet ................................................................................................................ 76
6.9.4 Diagram COM SETUP ................................................................................... 76
6.10 PASSWORD menu ......................................................................................... 77
6.10.1 Activating and setting the password ..................................................... 77
6.10.2 Diagram PASSWORD .................................................................................... 77
6.11 Menu LANGUAGE ......................................................................................... 78
6.11.1 Setting the national language .................................................................. 78
6.11.2 Diagram Language ....................................................................................... 78
6.12 Menu SERVICE ................................................................................................. 79
6.13 Parameterization via Internet ................................................................... 79
7. Serial interfaces ............................................................................................. 80
7.1 RS-485 interface with BMS protocol ....................................................... 80
7.2 Topology RS-485 network .......................................................................... 81
7.2.1 Correct arrangement ................................................................................... 81
7.2.2 Wrong arrangement ..................................................................................... 81
7.2.3 Wiring ................................................................................................................ 81
7.3 BMS protocol (BMS) ...................................................................................... 82
7.3.1 BMS Master ...................................................................................................... 82
7.3.2 BMS-Slave ......................................................................................................... 83
7.3.3 BMS operation in the Standby mode ..................................................... 84
7.3.4 Combination with EDS46… devices ...................................................... 86
7.3.5 Commissioning of an RS-485 network with BMS protocol ............ 87
8. Factory settings ............................................................................................. 89

6 IRDH575_D00089_05_M_XXEN/01.2020
Table of Contents

9. Technical data IRDH575 ................................................................................ 91

9.1 Data in tabular form ..................................................................................... 91
9.2 Standards, approvals and certifications ................................................ 95
9.3 Characteristic curves .................................................................................... 96
9.3.1 Characteristic curves of the ISOMETER® ................................................ 96
9.3.2 Characteristic curves of the insulation fault locators EDS46… /
EDS49… .......................................................................................................... 100
9.3.3 Characteristic curves for the insulation fault location system
EDS470 ............................................................................................................ 102
9.4 Ordering details ........................................................................................... 111
9.4.1 Standard version ......................................................................................... 111
9.4.2 Protection against dust and moisture ................................................. 112
9.4.3 Adaptor for rail mounting ........................................................................ 112
9.4.4 Measuring instruments ............................................................................. 112

IRDH575_D00089_05_M_XXEN/01.2020 7
1. Important information

1.1 How to use this manual

This manual is intended for qualified personnel working in

electrical engineering and electronics!

Always keep this manual within easy reach for future reference.
To make it easier for you to understand and revisit certain sections in this man-
ual, we have used symbols to identify important instructions and information.
The meaning of these symbols is explained below:

This signal word indicates that there is a high risk of danger

that will result in electrocution or serious injury if not
avoided.
DANGER

This signal word indicates a medium risk of danger that

can lead to death or serious injury if not avoided.
WARNING

This signal word indicates a medium risk of danger that

can lead to death or serious injury if not avoided.
CAUTION

This symbol denotes information intended to assist the user

in making optimum use of the product.

IRDH575_D00089_05_M_XXEN/01.2020
8
Important information

1.2 Technical support: service and support

For commissioning and troubleshooting Bender offers you:

1.2.1 First level support

Technical support by phone or e-mail for all Bender products
  Questions concerning specific customer applications

  Commissioning

  Troubleshooting

Telephone: +49 6401 807-760*

Fax: +49 6401 807-259
In Germany only: 0700BenderHelp (Tel. and Fax)
E-mail: support@bender-service.de

1.2.2 Repair service

Repair, calibration, update and replacement service for Bender products
  Repairing, calibrating, testing and analysing Bender products

  Hardware and software update for Bender devices

  Delivery of replacement devices in the event of faulty or incorrectly

delivered Bender devices
  Extended guarantee for Bender devices, which includes an in-house
repair service or replacement devices at no extra cost

Telephone: +49 6401 807-780** (technical issues)

+49 6401 807-784**, -785** (sales)
Fax: +49 6401 807-789
E-mail: repair@bender-service.de
Please send the devices for repair to the following address:

Bender GmbH, Repair-Service,

Londorfer Str. 65,
35305 Grünberg

IRDH575_D00089_05_M_XXEN/01.2020 9
 Important information

1.2.3 Field service

On-site service for all Bender products
  Commissioning, configuring, maintenance, troubleshooting of Bender

products
  Analysis of the electrical installation in the building (power quality test,

EMC test, thermography)

  Training courses for customers

Telephone: +49 6401 807-752**, -762 **(technical issues)

+49 6401 807-753** (sales)
Fax: +49 6401 807-759
E-mail: fieldservice@bender-service.de
Internet: www.bender-de.com

*Available from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 8.00 p.m., Fr 7.00 a.m. - 13.00 p.m

1.3 Training courses

Bender is happy to provide training regarding the use of test equipment.
The dates of training courses and workshops can be found on the Internet at
www.bender-de.com -> Know-how -> Seminars.

1.4 Delivery conditions

Bender sale and delivery conditions apply.
For software products the "Softwareklausel zur Überlassung von Standard-
Software als Teil von Lieferungen, Ergänzung und Änderung der Allgemeinen
Lieferbedingungen für Erzeugnisse und Leistungen der Elektroindustrie"
(software clause in respect of the licensing of standard software as part of de-
liveries, modifications and changes to general delivery conditions for prod-
ucts and services in the electrical industry) set out by the ZVEI (Zentralverband
Elektrotechnik- und Elektronikindustrie e. V.) (German Electrical and Electron-
ic Manufacturer's Association) also applies.

10 IRDH575_D00089_05_M_XXEN/01.2020
Important information

Sale and delivery conditions can be obtained from Bender in printed or elec-
tronic format.

1.5 Inspection, transport and storage

Inspect the dispatch and equipment packaging for damage, and compare the
contents of the package with the delivery documents. In the event of damage
in transit, please contact Bender immediately.
The devices must only be stored in areas where they are protected from dust,
damp, and spray and dripping water, and in which the specified storage tem-
peratures can be ensured.

1.6 Warranty and liability

Warranty and liability claims in the event of injury to persons or damage to
property are excluded if they can be attributed to one or more of the follow-
ing causes:
  Improper use of the device.

  Incorrect mounting, commissioning, operation and maintenance of the

device.
  Failure to observe the instructions in this operating manual regarding

transport, commissioning, operation and maintenance of the device.

  Unauthorised changes to the device made by parties other than the

manufacturer.
  Non-observance of technical data.

  Repairs carried out incorrectly and the use of replacement parts or

accessories not approved by the manufacturer.

  Catastrophes caused by external influences and force majeure.

  Mounting and installation with device combinations not recom-

mended by the manufacturer.
This operating manual, especially the safety instructions, must be observed by
all personnel working on the device. Furthermore, the rules and regulations
that apply for accident prevention at the place of use must be observed.

IRDH575_D00089_05_M_XXEN/01.2020 11
 Important information

1.7 Disposal
Abide by the national regulations and laws governing the disposal of this de-
vice. Ask your supplier if you are not sure how to dispose of the old equip-
ment.
The directive on waste electrical and electronic equipment (WEEE directive)
and the directive on the restriction of certain hazardous substances in electri-
cal and electronic equipment (RoHS directive) apply in the European Commu-
nity. In Germany, these policies are implemented through the "Electrical and
Electronic Equipment Act" (ElektroG). According to this, the following applies:
  Electrical and electronic equipment are not part of household waste.

  Batteries and accumulators are not part of household waste and must
be disposed of in accordance with the regulations.
  Old electrical and electronic equipment from users other than private
households which was introduced to the market after 13 August 2005
must be taken back by the manufacturer and disposed of properly.
For more information on the disposal of Bender devices, refer to our
homepage at www.bender-de.com -> Service & support.

12 IRDH575_D00089_05_M_XXEN/01.2020
2. Safety instructions

2.1 General safety instructions

Part of the device documentation in addition to this manual is the enclosed
"Safety instructions for Bender products".

2.2 Work activities on electrical installations

Only qualified personnel are permitted to carry out the

work necessary to install, commission and run a device or
system.

Risk of electrocution due to electric shock!

Touching live parts of the system carries the risk of:
  An electric shock
DANGER   Damage to the electrical installation

  Destruction of the device

Before installing and connecting the device, make sure

that the installation has been de-energised. Observe the
rules for working on electrical installations.

If the device is used outside the Federal Republic of Germany, the applicable
local standards and regulations must be complied with. The European stan-
dard EN 50110 can be used as a guide.

IRDH575_D00089_05_M_XXEN/01.2020
13
 Safety instructions

2.3 Device-specific safety information

Children and unauthorised persons must not have access to

or contact with the ISOMETER®.
WARNING

Make sure that the operating voltage is correct!

Prior to insulation and voltage tests, the ISOMETER® must be
disconnected from the IT system for the duration of the test.
CAUTION In order to check the correct connection of the device, a
functional test has to be carried out before starting the
system.

Make sure that the basic settings meet the requirements of

the IT system.
CAUTION

In the event of an alarm message of the ISOMETER®, the

insulation fault should be eliminated as quickly as possible.

If the ISOMETER® is installed inside a control cabinet, the

insulation fault message must be audible and/or visible to
attract attention.

14 IRDH575_D00089_05_M_XXEN/01.2020
Safety instructions

When using ISOMETER®s in IT systems, make sure that only

one active ISOMETER® is connected in each interconnected
system. If IT systems are interconnected via coupling
switches, make sure that ISOMETER®s not currently used are
disconnected from the IT system and deactivated. IT systems
coupled via diodes or capacitances may also influence the
insulation monitoring process so that a central control of the
different ISOMETER®s is required.

Prevent measurement errors!

When a monitored IT system contains galvanically coupled
DC circuits, an insulation fault can only be detected correctly
if the rectifier valves (e.g. rectifier diode, thyristors, IGBTs,
frequency inverters, …) carry a minimum current of > 10 mA.

Unspecified frequency range

When connecting to an IT system with frequency
components below the specified frequency range, the
response times and response values may differ from the
indicated technical data. However, depending on the
application and the selected measurement method,
continuous insulation monitoring is also possible in this
frequency range.
There is no influence on the insulation monitoring for IT
systems with frequency components above the specified
frequency range, e.g. within the range of typical switching
frequencies of frequency inverters (2…20 kHz).

IRDH575_D00089_05_M_XXEN/01.2020 15
 Safety instructions

2.4 Use for the intended purpose

The ISOMETER® is exclusively intended for:
  monitoring the insulation resistance of IT systems and

  localization of insulation faults in combination with insulation fault

evaluators EDS4…
In order to meet the requirements of the applicable standards, customised pa-
rameter settings must be made on the equipment in order to adapt it to local
equipment and operating conditions. Please heed the limits of the range of
application indicated in the technical data.
Any use other than that described in this manual is regarded as improper.

16 IRDH575_D00089_05_M_XXEN/01.2020
3. Function

3.1 General characteristics

  Four-line LC display
  Automatic device self-test
  Memory with real-time clock to store all alarm messages with date and
time stamp
  RS-485 interface (BMS protocol) for data exchange with other Bender
devices (RS-485 electrically isolated)
  Remote setting of certain parameters via the Internet (option;
FTC470XET additionally required)
  Option "W":
Improved shock and vibration resistance for use in ships, on rolling
stock and in seismic environment.

3.2 Essential functions of the ISOMETER®

  ISOMETER® for IT AC systems with galvanically connected rectifiers and
for IT DC systems (isolated power)
  Automatic adaptation to the existing system leakage capacitances
  AMPPlus measuring principle (European Patent: EP 0 654 673 B1)
  Two adjustable response values in the range 1 kΩ …10 MΩ (Alarm 1/
Alarm 2)
  Connection monitoring
  Internal disconnection of the ISOMETER® from the IT system to be mon-
itored (using a control signal; terminals F1/F2) , e.g. if several
ISOMETER®s are interconnected.
  Current output 0(4)…20 mA (galvanically separated) in relation to the
measured insulation value.

IRDH575_D00089_05_M_XXEN/01.2020
17
 Function

3.3 Essential functions of the Insulation fault

location system (EDS)
  Generation of the test current necessary for selective insulation fault
location
  Indication of the insulation faults selectively localized by the EDS4…
systems
  Parameterization of EDS4… systems
  Test function for EDS4… systems, incl. the connected measuring cur-
rent transformers.

3.4 Product description

The IRDH575 ISOMETER® monitors the insulation resistance of IT systems. It is
suitable for universal use in 3NAC, AC/DC and DC systems. AC systems may in-
clude extensive DC supplied loads, such as converters or thyristor-controlled
DC drives. The device automatically adapts itself to the existing system leaka-
ge capacitance.
The IRDH575 ISOMETER® is fitted into an enclosure for panel mounting,
144 x 96 mm (WxH). For protection against dust and moisture, a panel seal
(IP42) or a front-face transparent cover (IP65) are available as accessories, see
page 112.
The IRDH575 can be used in combination with a control and indicating device,
PRC1470 version 2 or higher, for example, on the BMS (BMS = Bender Measu-
ring Device Interface) bus.

18 IRDH575_D00089_05_M_XXEN/01.2020
Function

3.5 Function
The IRDH575 ISOMETER® is connected between the unearthed system and the
protective conductor (PE).
The response values and other function parameters are set via the function keys.
The parameters are indicated on the LC display and are stored in a non-vola-
tile memory (EEPROM) after the setting is completed.
A microprocessor-controlled pulsating AC measuring voltage is superimpo-
sed on the system ( AMPPlus measuring principle*). The measuring cycle
consists of positive and negative pulses of the same amplitude. The period de-
pends on the respective system leakage capacitances and the insulation resis-
tance of the system to be monitored.
An insulation fault between system and earth closes the measuring circuit.
From the measured current value, the microprocessor calculates the insulati-
on resistance which is indicated on the LC display or the external kΩ measu-
ring instrument.

Prevent measurement errors!

When an AC system includes galvanically connected DC
circuits, the following shall be considered:
Insulation faults in DC circuits can only be monitored
correctly when the rectifiers carry a continuous load of at
least 5…10 mA.

The measuring time is determined by the system leakage capacitances, the in-
sulation resistance, and the system-related interference disturbances. System
leakage capacitances do not influence the measuring accuracy.
If the reading is below the selected response values ALARM1/ALARM2, the as-
sociated alarm relays respond and the alarm LEDs "ALARM1/2" light up and
the measuring value is indicated on the LC display (in the event of DC insula-
tion faults, the faulty supply line is indicated). The fault indication can be
stored by bridging the terminals R1/R2 (external RESET button [NC contact])
or by setting the fault memory to "Memory:on" in the "ISO SETUP" menu.
Pressing the external or internal RESET button, resets the fault message, pro-
vided that the insulation resistance is at least 25 % above the preset value.

IRDH575_D00089_05_M_XXEN/01.2020 19
 Function

R1/R2 bridged + Memory: on fault memory activated

R1/R2 bridged + Memory: off fault memory activated
R1/R2 not connected + Memory: on fault memory activated
R1/R2 not connected + Memory: off fault memory deactivated

*) AMPPlus measuring principle "adaptive measuring pulse", a measuring

principle developed by Bender.

3.5.1 Current output for external measuring instrument

The current output of IRDH575 provides 0(4)…20 mA. The current output is
electrically isolated from the device electronics and the RS-485 interface. The
ISO SETUP menu, on page 54, allows to switch over between 0…20 mA and
4…20 mA.

3.5.2 Real-time clock

The real-time clock serves as a time base for the historical memory and self
test function. At first the correct time and date must be set in the menu
"ISO ADVANCED". If time and date are not set, a "C" (clock) is flashing in the
standard display. In the event of a supply voltage failure, time and date will be
stored for thirty days. If the 24 h self test is activated in the ISO ADVANCED me-
nu, a special time of day can be selected for the execution of the self test in the
menu "TEST: 12:00". Then a self test will be started automatically once a day
exactly at the preset time. If the 1 h test has been selected, the self test is au-
tomatically carried out every full hour.

3.5.3 Insulation fault location

Another function of the IRDH575 is selective insulation fault location. If the va-
lue of the insulation resistance falls below the set response values ALARM 1
and ALARM 2, a certain test current is generated by the IRDH575. The maxi-
mum value of the test current is determined by the maxPuls parameter, see
page 60. In combination with an insulation fault evaluator EDS47…and the
associated measuring current transformers connected to it, the insulation
fault is selectively detected. The detected insulation fault is signalled to the

20 IRDH575_D00089_05_M_XXEN/01.2020
Function

IRDH575 via the RS-485 interface (BMS protocol) and is then indicated by an
alarm LED and indicated on the display. In the Master mode (Addr. 1), this
alarm message is indicated by the alarm relay K3 as common alarm.
During the insulation fault location process the insulation monitoring func-
tion is deactivated. If the test current falls below the value the EDS4… is capa-
ble of measuring, the insulation fault location process will be stopped by
IRDH575.

Risk of malfunctions due to excessive locating current

on sensitive system parts!
An excessive locating current flowing between the IT system
CAUTION and earth may cause controller faults in sensitive system
parts, such as the PLC or the relay. Ensure that the level of
the locating current is compatible with the system to be
monitored.

3.5.4 Interconnected systems

When using ISOMETER®s in IT systems care shall be taken that only one active
ISOMETER® is connected in each interconnected system. If IT systems are
interconnected via coupling switches, make sure that ISOMETER®s not cur-
rently used are disconnected and deactivated via a control system. IT systems
coupled via diodes or capacitances may also influence the insulation monito-
ring process. Hence, also in this case a central control of the different
ISOMETER®s is required.

IRDH575_D00089_05_M_XXEN/01.2020 21
 Function

3.5.5 Function input F1/F2 for connection or disconnection of IT

systems being monitored
The ISOMETER® can be disconnected from the IT system and set to STANDBY
mode with the function input F1/F2. When the input F1/F2 is bridged, the ter-
minals L1/L2 are isolated from the measuring circuit via internal coupling re-
lays and terminal L3 remains connected to the measuring circuit via a resistor
of 10 MΩ. The measuring function is stopped and the message „STANDBY“ ap-
pears on the display. When using software version 1.4 or higher, the latest
measured insulation resistance is blanked and the value > 10 MΩ appears on
the display. Furthermore, the alarm relays and alarm LEDs no longer provide
alarm messages. Insulation faults already detected will be indicated by all
EDS4…devices.
After opening the function input F1/F2, first of all the connection to the IT sys-
tem will be restored and a completely new measuring cycle for insulation mo-
nitoring will be started. Using this function, selective disconnection of an
IRDH575 in interconnected IT systems can be carried out via auxiliary contacts
of the respective coupling switch. One coupling switch each in a line-type or
ring-type arrangement can deactivate a subsequent IRDH575. This arrange-
ment guarantees that only one ISOMETER® is active in each galvanically con-
nected IT system.
Theoretically speaking, in a ring-type arrangement with all coupling switches
closed, all ISOMETER®s would be deactivated. In order to prevent this, a BMS
Master (IRDH575 Adr1) monitors the condition of the function input F1/F2 of
all Slave ISOMETER®s.
When all Slave ISOMETER®s are in the STANDBY mode, the insulation monito-
ring function of the Master ISOMETER® remains active, that means, the input
F1/F2 of the Master is without function in this mode.

22 IRDH575_D00089_05_M_XXEN/01.2020
Function

BMS bus (A/B, RS485)

addr. 1 addr. 2

IT system 1 IT system 2

IT system 4 IT system 3

addr. 4 addr. 3

Example:
Let as assume, in the before-mentioned ring-type arrangement, the associa-
ted coupling switch of the Slave ISOMETER® 2 were open. The coupling swit-
ches of the BMS Master (Addr. 1) and of the Slaves 3 and 4 were closed. In this
case the ISOMETER® and EDS functions of the Master and the Slaves 3 and 4
would be deactivated. In spite of changing to the STANDBY mode, the Master
status of the device with address 1 would remain. That means, if a paramete-
rization is necessary, it has to be carried out via the IRDH575 with BMS
address 1.

IRDH575_D00089_05_M_XXEN/01.2020 23
 Function

3.5.6 ISOnet function for central control of the insulation

monitoring process when several IRDH575 are
interconnected in IT systems
Up to 30 ISOMETER® can communicate with each other in an ISOnet network.
The ISOnet network can only be activated when a BMS bus is used for inter-
connection. A typical method with four devices is shown as an example. The
ISOnet function of all ISOMETER® in the ISOnet network must be activated in
the COM SETUP „ISOnet=ON“ menu, refer to page 76.
The BMS master (BMS address 1) with activated ISOnet function controls
the ISOnet slave devices via the BMS bus.
Address 1 must not be assigned to another BMS device on the respective BMS
bus.
When the master ISOMETER® has finished one measuring cycle, the authoriza-
tion for insulation monitoring is passed on to the next higher BMS address.
This authorization is returned by the slave with the highest BMS address to the
BMS master after a cycle has been completed.
During the insulation monitoring process, all other ISOMETER®, are in the
STANDBY mode. In this way it is prevented that ISOMETER®s influence each
other in interconnected IT systems.
At f = 50Hz and Ce = 1 µF, an ISOnet device stays in the measuring mode for
12s and then changes to the STANDBY mode. The maximum response time of
the ISOnet device that made the last measurement, will be extended by the
number of devices x 12s, in our example 48s.
When an insulation fault is detected by an ISOMETER®, the insulation fault lo-
cation process is started. The device stays in the measuring mode during this
time. Only after completion of insulation fault location, the ISOnet device
stops the monitoring mode and passes the authorization for insulation moni-
toring on to the next device.
In the STANDBY mode, the ISOnet device displays the last measured insulati-
on resistance.

24 IRDH575_D00089_05_M_XXEN/01.2020
Function

Each ISOnet slave checks the network for an ISOnet master. If there is no mas-
ter available, the display will show the fault message “ISOnet Master?“ after
approximately 1 hour. Additionally, the LED for device errors lights and the
Relay K3 switches. With the ISOnet function activated, the function input
F1/F2 is automatically deactivated.

All EDS devices in the IT systems being monitored must be

operated with activated fault memory.

In comparison to a solution with coupling switches and function input F1/F2,

the response time will be extended because the measurement is not perma-
nently carried out.
BMS bus (A/B, RS485)

addr. 1 addr. 2

IT system 1 IT system 2

IT system 4 IT system 3

addr. 4 addr. 3

IRDH575_D00089_05_M_XXEN/01.2020 25
 Function

This has the advantage that no auxiliary contacts of a coupling switch are re-
quired. Furthermore, this solution is recommended for IT systems coupled via
capacitances or diodes.

3.5.7 Self test

In order to guarantee high functional reliability, the ISOMETER® provides com-
prehensive self test functions. After switching the supply voltage on, all inter-
nal measuring functions, the components of the process control such as data
and parameter memory as well as system and earth connections are checked
using the self test functions. The progress of the self test is indicated on the
display by a bar graph. Depending on the system conditions, the duration of
the self test is 15… 20 seconds, then the device indicates "Test ok" for appro-
ximately 2 seconds. Then the device returns to normal measuring mode and
the current measuring value is displayed after the expiry of the reading time.
When a fault is found the message "!Error!" appears on the display, the device
fault relay K3 (31-32-34) drops, the device fault LED lights up and the respec-
tive error message (see table) is indicated. If such a device fault occurs, a self
test will be started every 60 seconds. If no more malfunction is detected, the
fault message will automatically be deleted, the device fault LED extinguishes
and the device fault relay K3 energizes again.
During operation, the self test function can be started by pressing the TEST
button (internal or external) or automatically every hour or every 24 hours by
selecting "ISO ADVANCED": Autotest:" in the menu. The alarm relays ALARM 1/
2 can only switch after starting the self test function by pressing the TEST but-
ton, that means if an automatic self test has been selected, the alarm relays do
not switch.

If the on/off switching of the supply voltage is not possible for

technical reasons, a RESET of the device can be carried out by
pressing the "INFO", "RESET" and "MENU" key simultaneously.

26 IRDH575_D00089_05_M_XXEN/01.2020
Function

Behaviour of the analogue output

Setting Manual test Automatic test

0-20 mA 20 mA 0 mA
while test procedure The current value depends
on the insulation value
4-20 mA 20 mA 4 mA
while test procedure The current value depends
on the insulation value

Error
message Meaning Steps to taken

System No low-resistance 1. Check the wiring of termi-

connection? connection of nal L1, L2, L3 to the system
terminals L1, L2, L3 2. Press the TEST button
to the system 3. Switch the supply voltage
on and off
4. Check the fuses

Connection No low-resistance 1. Check wiring of terminal

PE? connection of the and KE to earth (PE)
terminals and 2. Press the TEST button
KE to earth (PE) 3. Switch the supply voltage
on and off

Device error x Internal device 1. Press the TEST button

error 2. Switch the supply voltage
on and off
3. Please contact Bender

IRDH575_D00089_05_M_XXEN/01.2020 27
 Function

3.5.8 Relay K3: device fault alarm and EDS common message
Relay K3 is intended to signal device and connection errors of the
ISOMETER®. In the Master mode with bus address 1, EDS alarm messages can
be collectively indicated by the K3 relay as well as system fault messages. Coll-
ective indication of the EDS alarms by K3 can be disabled by selecting „K3
Alarm: off“ from the "EDS Setup" menu. Refer to page 63.
K3 is permanently set to N/C operation, with the contacts 31-34 normally
closed, that means when a fault occurs, the relay deenergizes (K3: 31-32 con-
nected).
Further details are described in "Chapter 3.5.7 Self test". Even when a protocol
converter of the FTC470… series is installed in a BMS system which is tem-
porarily taking over the Master function is, the function collective EDS mes-
sage will remain. This function is directly dependent on BMS address 1, the
Master status is a secondary factor.

The settings for K3 are preset and cannot be adjusted.

28 IRDH575_D00089_05_M_XXEN/01.2020
4. Connection

Only qualified personnel are permitted to carry out the

work necessary to install, commission and run a device or
system.

Risk of electrocution due to electric shock!

Touching live parts of the system carries the risk of:
  An electric shock
DANGER   Damage to the electrical installation

  Destruction of the device

Before installing and connecting the device, make sure

that the installation has been de-energised. Observe the
rules for working on electrical installations.

IRDH575 has plug-in terminals.

Connect the terminals A1/+ and A2/- to the supply voltage US in accordance
with IEC 60364-4-43. The connections to the supply voltage shall be provided
with protective devices to afford protection in the event of a short-circuit (a 6
A fuse is recommended).
For UL and CSA applications, the use of 5 A fuses is mandatory.
Devices for protection against short-circuit in conformity with
IEC 60364-4-43 for the IT system coupling L1/L2/L3 can be omitted if the wi-
ring is carried out in such a manner as to reduce the risk of a short-circuited to
a minimum (a short-circuit-proof and earth-fault-proof wiring is recommen-
ded).
Use the accompanying terminal covers for terminal protection.

IRDH575_D00089_05_M_XXEN/01.2020
29
Connection

Only one ISOMETER® may be connected to an external TEST or RESET button.

The TEST and RESET inputs of different insulation monitoring devices must
not be connected in parallel for collective testing.

Risk of property damage due to unprofessional

installation!
If more than one insulation monitoring device is connected
CAUTION to a conductively connected system, the system can be
damaged. If several devices are connected, the device does
not function and does not signal insulation faults. Make
sure that only one insulation monitoring device is
connected in each conductively connected system.

Ensure disconnection from the IT system!

When insulation or voltage tests are to be carried out, the
device shall be isolated from the system for the test period.
CAUTION Otherwise the device may be damaged.

IRDH575_D00089_05_M_XXEN/01.2020 30
 Connection

1 2 3 4
mA
5 6 7 8 9
RS485

ON

M+ M- T1 T2 R1 R2 F1 F2 A B 31 32 34 21 22 24 11 12 14
OFF
S2 S1

IRDH575 K3 K2 K1

A1/+ A2/- L1 L2 L3 KE

L1 L2 L3
6A 3(N) AC-System Un PE
L1
L2
L3 14
N
10 11
L1 L2 L3
AC-System
L1
Un
L2
12
L1 L2 L3
DC-System
L+
Un
L- 13

31 IRDH575_D00089_05_M_XXEN/01.2020
Connection

Legend to wiring diagram :

1 For external indicating instrument:
current output 0…20 mA or 4…20 mA
*2 External TEST button (NO contact)
*3 External RESET button (NC contact or wire jumper),
(with the terminals open and the ISO-SETUP menu set to Memory: off,
insulation fault alarms will not be stored).
*4 STANDBY
When the contact is closed, insulation measurement does not take place;
system disconnection
5 S1 = ON : RS-485 interface (A/B) is terminated with 120 Ω resistor
S2 = unassigned)
6 Serial interface RS-485 (A/B)
7 System fault relay K3 (device fault and EDS Alarm) (Addr.: 1);
N/C operation (fixed setting)
8 Alarm relay K2 (insulation fault 2); changeover contacts provided
9 Alarm relay K1 (insulation fault 1); changeover contacts provided
10 Supply voltage US (see nameplate) via 6 A;
For UL and CSA applications, the use of 5 A fuses is mandatory
11 Connection to the 3 AC system to be monitored:
connect terminals L1, L2, L3 to conductor L1, L2, L3
12 Connection to the AC system to be monitored:
terminal L1 to conductor L1and
terminal L2, L3 to conductor L2
13 Connection to the DC system to be monitored:
terminal L1 to conductor L+ and
terminals L2, L3 to conductor L-
14 Separate connection of and KE to PE

* The terminal pairs 2, 3 and 4 must be wired so that they are

galvanically isolated and must not have a connection to PE.

IRDH575_D00089_05_M_XXEN/01.2020 32
5. Commissioning flow chart

5.1 Commissioning of the ISOMETER® function range (1)

IRDH575_D00089_05_M_XXEN/01.2020
33
Commissioning flow chart

Commissioning of the ISOMETER® function range (2)

Perform a functional test between

system and earth using a suitable
resistance for the mains voltage.
Resistance value: 50% of the
response value ALARM2.

IRDH575_D00089_05_M_XXEN/01.2020 34
 Commissioning flow chart

5.2 Commissioning of the insulation fault location

function (EDS) (1)
Disconnect the electrical installation before connecting the device !

Install the respective devices of

the insulation fault location system Project manual EDS470/EDS473 and
EDS46x/47x and the associated manual for EDS470, DS460/490 or EDS473
measuring transformers

Connect the RS485 interface of

the EDS system to the IRDH575

Assign the address to the

respective RS485 device

Turn the supply voltage on

Turn the system voltage on

An internal self test is running Chapter Operation and setting

or manual for EDS460/490 or EDS473

Use the EDS-SETUP menu to

Which EDS system is connected EDS461 set the maximum test current
to the IRDH575? EDS473 (max. pulse) to 2.5 mA (1 mA)

EDS460 / EDS470

Use the EDS-SETUP menu to set Manual for EDS470,

the max. test current (max. pulse) manual for EDS460/490
to 25 mA (10 mA), for example

35 IRDH575_D00089_05_M_XXEN/01.2020
Commissioning flow chart

Commissioning of the insulation fault location function (EDS) (2)

Shall the basic setting be Change the settings in EDS SETUP,
maintained? no
EDS460/490 resp. EDS470 menu
yes

Carry out the test in the

EDS460/490 resp. EDS470 menu

Are all bus nodes available after Check the wiring and bus nodes
the completion of the test ? no (RS485 LED)
yes

Do the EDS4... recognize all Check the CT wiring

measuring transformers correctly? no

yes

Perform a functional test between

system and earth using a suitable
resistance for the mains voltage.
Resistance value: no
50% of the of the lowest response
value downstream from the CT.

Alarm LEDs light up

Alarm relays switch

Does the LED "EDS on" light up?

Do the RS485 LEDs light at the Check whether the sub menu EDS auto
no is activated in the EDS SETUP menu
bus nodes ? Are the CTs being
scanned by the EDS4... ?

yes

When the faulty subcircuit is

recognized correctly, the
display indicates :
ADDR:xx k:xx xxmA
yes
Remove the resistance and select
yes another location downstream a
Are there other CTs installed measuring transformer where the
that are to be checked ? insulation fault is to be simulated.
no

IRDH575_D00089_05_M_XXEN/01.2020 36
 Commissioning flow chart

Commissioning of the insulation fault location function (EDS) (3)

Remove the resistance

no
Alarm LEDs extinguished?
Did the alarm relays respond ?

Delete the alarm messages by

pressing the RESET button
of the EDS4... or selecting
EDS RESET from the
EDS460/490 menu
of the IRDH575

The EDS4... is ready for

operation and correctly
connected

37 IRDH575_D00089_05_M_XXEN/01.2020
6. Operation and setting

6.1 Operating features and displays IRDH575

1 INFO button: to query standard information/

ESC key: back (menu function), confirmation parameter change

2 TEST button: to call up the self test (ISOMETER® only)/

Up key: parameter change, moving up in the menu

3 RESET button: to delete insulation fault alarms (ISOMETER® only)

Down key: parameter change, moving down in the menu

4 MENU button: to activate the menu system/

ENTER key: confirmation parameter change

IRDH575_D00089_05_M_XXEN/01.2020
38
 Operation and setting

5 EDS LED lights: insulation fault location has been started

6 EDS alarm LED lights: insulation fault is detected

7 Alarm LED 1 lights: insulation fault, first warning level reached

8 Alarm LED 2 lights: insulation fault, second warning level reached

9 Device fault LED lights: IRDH575 defective

39 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.1.1 Display in case of active EDS and detected fault

Insulation Fa u l t 8
1
Rs=011kW . H 7
2 --EDS:on---auto--- 6
ADR:02 k03 12mA

3 4 5

1 Insulation resistance is indicated in kΩ

2 Additional information about the insulation resistance:

„+“: insulation fault at L+
„–“: insulation fault at L–
„s“: new measurement has started

3 Bus address of the active EDS4… (indication in case of fault detec-

tion)

4 Channel being monitored by the EDS4… (indication in case of fault

detection)

5 Test current in mA or µA (indication in case of fault detection) or

short = measuring input short-circuited
noCT = no CT connected

6 -on---auto: EDS is in the AUTO mode and just running. Further modes
are:
- on: EDS is activated
- off: EDS is deactivated
- pos470 : Addr. and channel of the EDS have to be selected
(in the Master mode only), EDS47… only
- 1cycle : after testing all the channels, once the EDS is deactivated

IRDH575_D00089_05_M_XXEN/01.2020 40
 Operation and setting

7 = Polarity of the test current pulse

.
= valid RS-485 traffic
H = a new entry is made in the memory data base
C = flashing, if the clock has to be set

8 Messages:
- Insulation fault
- Connection system?
- Connection PE?
- Device error x
- ****STANDBY*****

6.1.2 Display in the menu mode

Parameter change is permitted

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED Parameter change is blocked,
enabling by a password

6.1.3 Function keys

Two functions are assigned to each function key. In addition to the basic func-
tion marked with a circle, the keys allow navigation within the menu.

41 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

Pressing the INFO key provides the following information

ESC without opening the menu:
  Device name, firmware version
INFO   Response values Alarm1 and Alarm2

  System leakage capacitance Ce (value is indicated

only if insulation values are > 20 kΩ)
  EDS Setup (operating mode, type of power supply
system, max. test current)
  Setup status (for details refer to the table of status
numbers on page 109 )
  COM Setup (IRDH575 bus address)

Please have the details above on hand if you have a problem and if you con-
tact Bender for technical questions.

Activating the TEST button starts the self

test of the ISOMETER®.

TEST RESET
Pressing the RESET key resets insulation
and fault messages of the ISOMETER®. This
function is only active after activating the fault memory in the ISO-SETUP
menu or after bridging R1/R2. Furthermore, the ISOMETER® can only be reset
when the present insulation value is 25 % higher than the preset response va-
lue.
The menu system is called up by pressing the MENU key.

MENU

IRDH575_D00089_05_M_XXEN/01.2020 42
 Operation and setting

For controlling the menu system, the Up/Down keys, the ENTER key and the
ESC key are used:
Up key:
Moving up in the menu, increasing a parameter
TEST

Down key:
Moving down in the menu, decreasing a parameter
RESET

ENTER key:
Selecting a menu item or sub menu item, confirming or sto-
MENU ring a parameter change and going back to the associated sub
menu item or going to the next input area.

ESC key:
ESC
to return to the previous menu.
INFO If the menu has not been closed, the device returns to the dis-
play mode again after approximately 5 minutes.

For the sake of clarity, the following symbols are used for the functions ENTER,
UP/DOWN and ESCAPE in the menu diagrams of this operating manual:

ESC

43 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.2 Menu structure and menu mode

The presentation of the menu structure consists of two parts. One part con-
sists of the menu options 1 to 8, the other one of the menu options 9 to 12. All
EDS-related menu options are grouped together and are represented on one
display. The EDS Setup menu option is designed for the test current generator
parameter setting of the IRDH575 for all insulation evaluators. One exception
in the EDS Setup menu is the parameter "Position mode", it is only designated
for EDS47… devices.

Switchover to the menu mode

Pressing the MENU key, will change the display from the standard mode to the
menu mode. From the main menu you can link to the different sub menus.

Navigation within the menu

Select the desired menu item using the UP/DOWN keys. The selected menu
item is indicated by a flashing cursor. Press the ENTER key to open the associ-
ated sub menu.
Use the UP/DOWN keys again to select the desired parameters. Move the cur-
sor to the edit field by pressing the ENTER key.
If you have reached the end of the main menu list, it will be indicated by the
"Arrow UP" symbol.

Changing the parameters

When password protection is activated, indicated by the symbol "padlock
closed" , the first thing to enter is the correct password before the para-
meters can be changed using the UP/DOWN keys. Entering the correct pass-
word once allows all parameters to be changed as long as you do not leave
the menu.
Changing the parameter usually has an immediate effect on the measuring
and alarm functions. The changed parameter is stored in a volatile memory by
pressing the ENTER or ESC key after returning to the sub menu (flashing cursor
in column 1). During menu operations, all measuring and alarm functions car-
ry on working as usual in the background.

IRDH575_D00089_05_M_XXEN/01.2020 44
 Operation and setting

Changing from the menu mode to the standard mode

Pressing the ESC key allows fast changing from the menu mode to the stan-
dard mode. Thus, the menu item "EXIT" need not to be activated. Automatic
switchover from the menu mode to the standard mode takes place when no
key is pressed for approximately 5 minutes in a main or sub menu.

45 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.2.1 Diagram menu structure

****IT-SYSTEM****
R >010 MW
- EDS: off -- auto --
MENU
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
ESC 6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

Menu
ESC item
1 ... 7
PASSWORD SERVICE
COM SETUP LANGUAGE

1. EXIT Insert Service

2. Password: XXX Password: 000
3. Status: off

1. EXIT
2. Addr: 001 1. EXIT
3. ISONet: Off 2. Text: Deutsch
4. ISO Monitor

IRDH575_D00089_05_M_XXEN/01.2020 46
 Operation and setting

****IT-SYSTEM****
R >010 MW
- EDS: off -- auto --
MENU
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
ESC 6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

Menu
item
8 ... 11 ESC

HISTORY INFO ISO ADVANCED EDS 460/490 EDS 470

ISO SETUP EDS SETUP

Nr.: 01 #Nr.: 02 1. EXIT 1. EXIT 1. EXIT

Power on 2. AGH : no 2. General 2. EDS-Monitor
12.09.02 09:21 3. Ce max: 150 µF 3. Channel 3. EDS Test: off
Clear all: off 4. Measure: AMP 4. Relay: N.O 4. EDS Reset: off
5. Autotest: 24h 5. Test/Reset 5. Relay: N.O
6. Clock: 19:08 6. Memory: on
7. Date: 01.01.01 7. CT Setup
8. Test: 12:00 8. n-peak: 001

1. EXIT
2. Alarm1 040 kW
3. Alarm2 010 kW 1. EXIT
4. K1 : NO 2. EDS: auto
5. K2 : NO 3. System: 3AC
6. Memory: off 4. MaxPuls:025mA
7. M+/M-: 0-20 mA 5. K3 Alarm: on

47 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.3 HISTORY INFO menu

99 events with date and time stamp can be stored in the memory database.
The database is designed as a ring memory, i.e. the eldest entry is overwritten.
Data is written into a non-volatile memory and therefore provides protection
against voltage failure.
For each record the display indicates the actual record number, the total num-
ber of records, the event message (see table below, right column), the date
and time. The first two records have a special meaning:
1. Last power on time.
2. Lowest measured insulation value RF since memory reset.

Data record Event Display indication

1 Supply voltage switched on Power On
2 Lowest measured insulation value Rmin
3...99 Response value Alarm 1 triggered Alarm1
3...99 Response value Alarm 1 cleared Alarm1
3...99 Response value Alarm 2 triggered Alarm2
3...99 Response value Alarm 2 cleared Alarm2
3...99 Error system connection triggered System connection?
3...99 Error system connection cleared System connection?
3...99 Error PE connection triggered PE connection?
3...99 Error PE connection cleared PE connection?
3...99 Device error triggered Device error
3...99 Device error cleared Device error
3...99 System reset (watchdog) System reset
Before storing the events with the actual date and time stamp, set the real-
time clock in the ISO ADVANCED menu (refer to page 55).
The following function keys are provided to query data from the "HISTORY IN-
FO" menu: the UP/DOWN keys to change the data record number, the ENTER
key to change from the data record number to the menu item "Clear all:on" to
delete the memory storage, and the ESC key to leave the menu.
A new entry into the memory is signalled with an "H" on the display in the
standard mode. The "H" will be deleted as soon as the "HISTORY INFO" menu
is called up.

IRDH575_D00089_05_M_XXEN/01.2020 48
 Operation and setting

6.3.1 Diagram HISTORY INFO

****IT-SYSTEM****
R >010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

Nr.: 01 #Nr: 08
ESC
Power on
01.01.06 16:12
Clear all: off

Nr.: 02 #Nr: 08
Rmin: 010kW Clear all: off Clear all: on
01.01.02 17:26
Clear all: off

Nr.: 03 #Nr: 08
Alarm1: 004kW Clear all: off Clear all: on
03.01.06 10:33
Clear all: off

49 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.4 ISO SETUP menu: Setting of the basic ISOMETER®

functions
The response values (Alarm 1/2, prewarning and main alarm), the operating
principle of the alarm relays K1 and K2 (N.O = N/O operation, N.C = N/C ope-
ration), the fault storage behaviour and the selection of the current output
between two different ranges are set in this menu.

6.4.1 Response values Alarm 1 and Alarm 2

The response values Alarm 1 and Alarm 2 are selected with the UP/DOWN
keys and stored with the ENTER key.

6.4.2 Starting the EDS system via the response values ALARM 1
and ALARM 2
The EDS system is started when the value of the insulation resistance falls
below the lowest preset response value, i.e. below both alarm values.
When setting the ISOMETER® response values, make sure that the lower value
of them is within a range which the EDS system is able to find. Therefore it is
recommended to set the ISOMETER® response value according to the respon-
se characteristic curves of the EDS system (Refer to page 102).

IRDH575_D00089_05_M_XXEN/01.2020 50
 Operation and setting

6.4.3 Operating principle of the alarm relays

K1/K2 are factory set to N.O Test, that means N/O operation. When the supple-
ment "Test" has been selected, the alarm relays switch over during a manual
self test.
If, for any reason, the alarm relays may not switch over during a manual self
test, the settings N.C or N.O are to be selected.

K1: N.C Test = N/C operation contacts 11-12-14, with relay test
(the alarm relay is energized during normal operation)
K1: N.O Test = N/O operation contacts 11-12-14, with relay test
(the alarm relay is deenergized during normal operation)
K1: N.C = N/C operation contacts 11-12-14, without relay test
(the alarm relay is energized during normal operation)
K1: N.O = N/O operation contacts 11-12-14, without relay test
(the alarm relay is deenergized during normal operation)
K1: Flash = Flashing function contacts 11-12-14
(the alarm relay and the LED flash in the event of an alarm
message, approximately 0.5 Hz

51 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

Diagram ISO SETUP

****IT-SYSTEM****
R >010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

1. Exit
2. AL1: 40 KW Alarm1 : 40 KW
3. AL2: 10 KW
4. K1 : N.O 001 KW
.
5. K2 : N.O .
6. Memory: off 10 MW
7. M+/M-: 0-20 mA Alarm2 : 10 KW

K1: N.O Test

N.O Test
N.C Test
Flash
N.O
N.C
K2: N.O Test

Memory: off
Memory: on
Memory: off

M+/M-: 0-20 mA
M+/M-: 0-20 mA
M+/M-: 4-20 mA

IRDH575_D00089_05_M_XXEN/01.2020 52
 Operation and setting

K2: N.C Test = N/C operation contacts 21-22-24, with relay test
(the alarm relay is energized during normal operation)
K2: N.O Test = N/O operation contacts 21-22-24, with relay test
(the alarm relay is deenergized during normal operation)
K2 : N.C = N/C operation contacts 21-22-24, without relay test
(the alarm relay is energized during normal operation)
K2 : N.O = N/O operation contacts 21-22-24, without relay test
(the alarm relay is deenergized during normal operation)
K2 : Flash = Flashing function contacts 21-22-24
(the alarm relay and the LED flash in the event of an alarm
message, approximately 0.5 Hz)

K3 has to be parameterized in the Menu EDS Setup, refer to page 63.

6.4.4 Memory setting (on/off)

Memory: on = Fault memory is activated
The device must be reset with the RESET button after
clearing the fault.
Memory: off = Fault memory deactivated (factory setting)

In the ISO SETUP menu the memory behaviour of the

IRDH575 can be set. This setting does not have an effect on
the memory behaviour of the connected EDS devices, these
settings must be carried out in the EDS460/490 and EDS470
menu.

53 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.4.5 Current output for external measuring instruments

Factory setting: 0…20 mA
The current output of the IRDH575 can be set to "0…20 mA" or "4…20 mA" via
the menu point "M+/M-:". The maximum load is 500 Ω.

Function 0…20 mA: Ω

RF = insulation fault, Ω
I = current in mA

Function 4…20 mA: Ω

RF = insulation fault, Ω
I = current in mA

The associated characteristic curves are illustrated on page 98.

IRDH575_D00089_05_M_XXEN/01.2020 54
 Operation and setting

6.5 ISO ADVANCED menu: Setting of the extended

functions

6.5.1 External coupling device (AGH: no = factory setting)

Coupling devices cannot be connected to the IRDH575.

6.5.2 Selecting the system leakage capacitance range

This menu allows to select the maximum system leakage capacitance Cemax.
You can select between two different ranges: 150 µF or 500 µF. Adaptation
within the selected range is carried out automatically. Please note that the ba-
sic measuring time will be increased to approximately 10 seconds when the
setting is Ce = 500 µF. Please also consider Cemax for the EDS-System, refer to
curves at page 104. Factory setting = 150 µF.

6.5.3 Changing the measuring principle from AMP to DC

(Measure: AMP)
The DC measuring principle (reduced measuring time) is only suitable for pure
AC systems. Factory setting = AMP.

6.5.4 Setting the repetition time for automatic self tests

(Autotest: 24h)
The time for the repetition of automatic self tests can either be set to 1 hour
or to 24 hours or can be deactivated. Factory setting = 24 h

6.5.5 Setting the real-time clock (Clock)

The setting of the real-time clock is the time base for the memory and for the
automatic self test. In case of failure of the supply voltage, the real-time clock
keeps running for approximately 30 days. When the device will be switched
on after this period, a flashing "C" appears on the display and the clock has to
be set again.

55 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.5.6 Setting the date (Date)

As well as the time, the date is required for the memory, too. In the event of
power supply failure, the date function is not influenced for at least 30 days. If
the device is switched on again after this period, a new setting of date and
time of the real-time clock is required.

6.5.7 Specifying the starting time of the automatic self test (Test)
If the 24h self test is activated in the ISO ADVANCED menu, it is possible to set
the time (hour) when the self test is to be carried out by means of the
"TEST: 12:00" sub menu. Then the self test is automatically carried out once a
day at a given time. If the 1 hour auto test has been selected, the self test will
be carried out at every full hour.

IRDH575_D00089_05_M_XXEN/01.2020 56
 Operation and setting

6.5.8 Diagram ISO ADVANCED

****IT-SYSTEM****
R > 010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE
1. Exit
2. AGH: no
3. Ce max : 150µF Ce max : 150µF
4. Measure: AMP
Ce max : 150µF
5. Autotest: 24h
Ce max : 500µF
6. Clock: 21:09
7. Date: 01.01.01
Measure: AMP
8. Test: 12:00 DC
AMP
24h
no
01h
Autotest: 24h

Clock: 21:09

Date: 01.01.01

Test: 12:00
Test: 00:00
.
.
.
Test: 23:00

57 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.6 EDS-SETUP menu: Settings for fault location

This menu allows to carry out the necessary settings for the insulation fault lo-
cation system (EDS).

6.6.1 EDS auto / on / off / pos / 1cycle

A selection of the start and stop conditions for EDS systems and their meaning
are listed below:
  on
The EDS is running continuously, regardless of the insulation value and
the alarm messages from the ISOMETER®. This setting is essential, for
example, for mobile insulation fault location systems such as EDS3060/
3360.
  off
The EDS system is constantly switched off.
  pos470 (EDS47… only)
For continuous measurement at a desired address (EDS4…-12) and a
certain channel. The selected parameters are kept until a new operat-
ing mode is set.
This function is only possible in the Master mode (bus address 1).
The following messages are possible in the POSITION mode.
Note: the messages noCT and short are only generated when the CT
monitoring for the respective channel has been switched on (= factory
setting, menu CT SETUP):
– no EDS: no EDS47… of this address available
– no Alarm: no insulation fault detected
– … mA: indication of the fault current in case of an insula-
tion fault
– >1A/>10 A: AC residual current > 1 A (EDS473) or >10 A
(EDS470)
– peak fault: measurement disturbed
– short: CT input short-circuited
– noCT: no CT connected

IRDH575_D00089_05_M_XXEN/01.2020 58
 Operation and setting

6.6.2 Diagram EDS-SETUP

****IT-SYSTEM****
R > 010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

1. Exit
2. EDS: auto EDS : auto
3. System: 3AC auto
4. MaxPuls: 025mA on
off
5. K3 Alarm: on pos470
1cycle
System: 3AC
3AC
K3 Alarm: on AC
on DC
off
POSITION SETUP
ADR: 002 k: 001
no EDS/ 15mA/
>1A/ >10A
MaxPuls: 025mA
1 mA
2,5 mA
10 mA
25 mA
50 mA

59 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

  1cycle
EDS47… :
As soon as the insulation resistance has fallen below the ISOMETER®
response values ALARM 1 and 2, the EDS system is automatically acti-
vated once. It remains active until every EDS47… has measured all
channels once and as long as the test current during the measure-
ments is above 1.5 mA (EDS470) or 0.15 mA (EDS473).
EDS46… / 49… :
As soon as the insulation resistance has fallen below the ISOMETER®
response values ALARM 1 and 2, the EDS system is automatically acti-
vated once. It remains active for approximately 5 minutes when the
test current during the measurement is above 1.5 mA (EDS460/
EDS490) or 0.15 mA (EDS461/EDS491).
  auto
As soon as the insulation resistance has fallen below the ISOMETER®
response values ALARM 1 and 2, the EDS system is automatically acti-
vated for approximately 5 minutes and remains activated as long as the
test current is above 5 mA (0.5 mA). The EDS insulation fault location
process is cyclically interrupted for approximately 5 minutes (factory
setting), i.e. for the time the ISOMETER® is carrying out insulation fault
measurements.

6.6.3 System DC / 1 AC / 3 AC
The type of the system to be monitored are to be selected from this sub menu:
  DC = DC system
  1 AC = single phase AC system

  3 AC = three-phase AC system

Factory setting is 3AC!

6.6.4 maxPuls 1 / 2.5 / 10 / 25 / 50 mA:

This setting determines the maximum test current.
  1 and 2.5 mA for EDS473 / 461 / 491 systems, preferably 2.5 mA.
1mA is recommended when sensitive electrical equipment is supplied
by the system, such as PLC controllers

IRDH575_D00089_05_M_XXEN/01.2020 60
 Operation and setting

Do not use these settings for supply voltages > 575 V.

Otherwise test currents up to 7 mA can occur, which can
damage sensitive equipment.

 10, 25 and 50 mA for EDS470 / 460 / 490 systems, preferably 25 mA.


10 mA is recommended when sensitive equipment such as control
relays is supplied by the system. 50 mA should only be used in case of
systems involving a lot of parallel faults (factory setting 25 mA).
The test current of the IRDH575 is factory set to 25 mA.

Please note that the test current is to be set according to the

type of supply system.

Resulting from the type of supply system, the real test current in AC systems
is lower than the setting. The reduction factor is 0.5 in AC-Systems and 0.67 in
3AC systems. Therefore, the test current setting 1 mA for EDS473 and 10 mA
for EDS470 devices is not admissible in AC systems.
A list of possible test current settings for IRDH575 in relation to the type of
supply system and insulation fault evaluators is given in the table below:

Type of supply EDS460/490 EDS461/491

system min. max. min. max.
DC 10 mA 50 mA 1 mA 2.5 mA
AC 10 mA* 50 mA 1 mA** 2.5 mA
3AC 10 mA* 50 mA 1 mA** 2.5 mA

61 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

Type of sup- EDS470 EDS473

ply system min. max. min. max.
DC 10 mA 25 mA 1 mA 2.5 mA
AC 25 mA 25 mA 2.5 mA 2.5 mA
3AC 25 mA 25 mA 2.5 mA 2.5 mA
* = Set the response value of EDS460/490 to < 5 mA
(See EDS460/490 manual, Chap. 6.6.3.2)
** = Set the response value of EDS461/491 to < 0.5 mA
(See EDS460/490 manual, Chap. 6.6.3.2)

Test current limiting for supply systems < 40 V

Please note:
In supply systems to be monitored with a voltage < 40 V the
maximum test current of all IRDH575B1… versions is
limited to approximately 25 mA .

IRDH575_D00089_05_M_XXEN/01.2020 62
 Operation and setting

6.6.5 K3 alarm: ON
The K3 relay can be used either for one or for two functions. It is always used
for signalling IRDH575 device errors.
  K3 alarm: on

= K3 signals additionally occurring EDS alarms as common alarm.

Please note that this function is only active in the master mode
(BMS address 1 = factory setting).

 K3 alarm: off

= K3 only signals IRDH575 device
Detailed information about the function is given on page 28 and page 26.

6.7 EDS460/490 menu

This menu can only be opened in the master mode (bus address 1), all the set-
tings via the BMS bus can only be carried out in the master mode, even when
several IRDH575 are interconnected. After starting the menu, the IRDH575
queries the essential parameters of EDS46… / EDS49… and the current para-
meters appear on the display.

6.7.1 General
The following parameters have an effect on that device the BMS address of
which is being displayed. Set the address in order to select the appropriate de-
vice.

Memory
Use this menu option to switch the fault memory of the selected EDS46…/
EDS49… on or off. Factory setting = off.

Trigger
Use this parameter to specify whether the fault location of EDS46… / EDS49…
is to be started by an IRDH575 (Com) or if automatically and continuously all
measuring channels are measured in parallel (Auto). Factory setting = Com.

63 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

N. freq
Use this menu option to select the nominal frequency of the system to be mo-
nitored. You may select 50, 60 or 400 Hz. Factory setting = 50 Hz.

System
Use this menu option to select the type of the distribution system to be moni-
tored.
You may select:
  DC = DC system
  AC = single-phase AC system
  3 AC = three-phase AC system

Factory setting = AC.

6.7.2 Channel
The following parameters have an effect on the device the BMS address and
measuring channel of which is being displayed. Set the respective address
and channel in order to select the appropriate device.

IRDH575_D00089_05_M_XXEN/01.2020 64
 Operation and setting

Diagram EDS460 /490 with General and Channel

5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM ETUP

1. Exit
2. General
3. Channel
4. Relay: N/O
5. Test/Reset
ADR: 2...90 Sw: V1.02
1. Exit
2. Memory: off on Memory: on
off
3. Trigger: Com
4. N.freq.: 50 Hz Com Trigger: Auto
see 5. System: AC Auto
next
page
DC N.freq.: 60 Hz
50 Hz
60 Hz
400 Hz
AC Systeme: 3AC
DC
3AC

2...
ResVal: 0005 mA
10mA

W/WR
WS CT: off
ADR: 2...90 CH: 1...12 P52
1. Exit P165
2. ResVal: 0004 mA P20
3. CT: W/WR off 00 s
4. T(on) :00 s 06 s T(on) : 12 s
12 s
5. T(off) :06 s 18 s T(off) : 18 s
6. CTmonitor: on 24 s
7. Inverter: off on
8. Op. mode: N/O CTmonitor: off
off

on Inverter: on
off

N/C Op. mode: N/C

N/O

65 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

ResVal
Use this menu option to set the response values of the EDS device to be para-
meterized. This applies to:
  EDS460 / EDS490: 2…10 mA in 1 mA steps, factory setting = 5 mA

  EDS461 / EDS491: 200…1000 µA in 1 µA steps, factory setting = 500 µA

CT: W/WR
Select the measuring current transformer type to be used from the list below:
  W/WR = circular or rectangular measuring current transformer =
factory setting
  WS = split-core current transformer
  off = channel switched off

T(on)
Use this menu option to set a response delay of 0…24 s for the selected
EDS4…;
Factory setting = 0 s.

T(off)
Use this menu option to set a delay on release of 0…24 s for the EDS4…;
Factory setting = 6 s.

CT monitor
To enable or disable the CT monitoring. That enables the EDS… to check the
proper connection of the respective measuring current transformer. After the
test, this will be indicated on the display as described in "Chapter 6.7.4 EDS
Test". Faults are indicated by the "Alarm 1“ LED. In position "off“, this function
is deactivated.
Factory setting = on.

Inverter
Use this menu option to adapt a selected channel of the EDS46… /49… to a
circuit comprising a frequency converter; Factory setting = off.

IRDH575_D00089_05_M_XXEN/01.2020 66
 Operation and setting

Op.mode
Use this menu option to determine the operating mode of the 12 channel-re-
lated alarm relays of an EDS490 / EDS491; Factory setting = N/O.

6.7.3 Relay
Use this menu to set the parameters for common alarm and system fault alarm
at the relays of EDS46… and EDS49. The following parameters have an effect
on that device the BMS address and the associated alarm relay of which are
being displayed. Set the address and the respective relay /1,2) in order to se-
lect the appropriate device.

Op.mode
Use this menu option to set the operating mode of the common relays for
alarm 1 and alarm 2. Factory setting: Relay 1 = N/O, Relay 2 = N/C.

ALARM
Use this menu option to assign an occurring EDS alarm to one or both EDS
alarm relays. Factory setting for Relay 1/2 = on.

Dev. Error
Use this menu option to assign an occurring EDS device fault alarm to one or
both EDS alarm relays. Factory setting. Relay 1 = off, Relay 2 = on.
In case of fault the following fault messages appear on the display of the
IRDH575:
  no CT (measuring current transformer not connected)

  short (measuring current transformer short-circuited)

  AC residual> 1 A (EDS461 /EDS491)

AC residual> 10 A (EDS460 /EDS490)

67 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.7.4 EDS Test

After activating this menu option, the IRDH575 checks all BMS bus nodes dis-
playing the following details:
  Device address

  Device type

  Software version

  CT connection

at EDS47… means:
– ok = channel switched on
– off = channel switched off
– noCT = no measuring current transformer connected
– short = measuring current transformer short-circuited
  Memory behaviour of the EDS47… (Memory on/off)

  Operating principle of the alarm relays of EDS47… (N.O/N.C)

If one of the tested BMS devices does not provide the required properties, no
answer is shown in the list of properties.
Factory setting = off.

6.7.5 EDS Reset

Use this menu option to reset stored fault messages of the connected EDS de-
vices.
Factory setting = off.

IRDH575_D00089_05_M_XXEN/01.2020 68
 Operation and setting

6.7.6 Diagram EDS46… /49… with Relay, EDS-Test and EDS-

Reset
6. EDS 460/490
7. EDS 470
8. COM SETUP

1. Exit
2. General see previous page
3. Channel
4. Relay: N/O
5. Test/Reset

N/C
ADR: 2...90 Relay: 1...2 N/O Op. mode: N/C
1. Exit
2. Op. mode: N/O
3. Alarm: off on Alarm: on
off
4. Dev. Error: on

on Dev. Error: off

off

1. Exit
2. EDS Test: off on EDS Test: on busy .... 16 s
off
3. EDS Reset: off

ADR: XXX k: XX TEST

EDS460 V2.10
CT: noCT Mem: off

on EDS-Reset: on
off

69 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.8 EDS 470 menu

This menu can only be opened in the Master mode (bus address 1). When se-
veral IRDH575 are interconnected via the BMS bus, all these settings can only
be carried out with a Master device.

6.8.1 EDS Monitor

  Indication of all detected insulation faults signalled to the IRDH575 via
the BMS bus by the connected EDS devices. The second line of the dis-
play shows the respective number of an alarm as well as the total
number of alarms. The third line shows the address and the channel of
the insulation fault evaluator EDS4… as well as the measured test cur-
rent.

6.8.2 EDS Test

IRDH575 checks all BMS bus nodes and indicates the following details:
  Device address

  Device type

  Software version

  CT connection
in case of EDS47… means:
– off = channel switched off
– noCT = no measuring current transformer connected
– short = measuring current transformer short-circuited
  Memory behaviour of the EDS47… (Memory on/off)

  Elongation of the measuring time EDS47… (peak 1…255) in case of

measurement disturbances
  Operating principle of the alarm relay EDS47… (N.O/N.C)

6.8.3 EDS Reset

This menu point can be used to reset stored fault messages of the connected
EDS devices.

IRDH575_D00089_05_M_XXEN/01.2020 70
 Operation and setting

6.8.4 Details about the menu points Relay, Memory and n-peak
The parameters indicated on the IRDH575 display do not necessarily corres-
pond to the EDS47… settings. Only when a control command is sent to EDS
by pressing Return, the EDS settings of EDS47… correspond to the IRDH575
indication.

71 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.8.5 Diagram EDS 470

5. EDS SETUP
6. EDS 460/490
7. EDS 470

****EDS-Monitor****
Nr.: 01 #Nr.: 02
1. Exit ADR: 03 k12 20mA
2. EDS Monitor *********************
3. EDS Test: off
4. EDS Reset: off Nr: 01
5. Relay: N/O
6. Memory: on 01...50
7. CT Setup
8. n-peak: 1...255

EDS-Test: off
****CT-SETUP****
ADR: 2....90 k: 1....12
EDS-Test: on
Typ: standard/split /off on
conn.-CT: on/off off

busy .... 16 s

ADR: XXX k: XX TEST

EDS470-12 V2.10
CT:noCT Mem: off
peak: 255 Rel: N/O

EDS-Reset: off EDS-Reset: off

on
off

4. EDS Reset: off

5. Relay: N.O Relay: N.O Relay: N.C
6. Memory: on N.O
N.C

Memory: on EDS-Reset: off

off
on

IRDH575_D00089_05_M_XXEN/01.2020 72
 Operation and setting

6.8.6 Relay
Operating principle of the alarm relays of EDS47…:
  N.C = N/C operation

  N.O = N/O operation = factory setting

6.8.7 Memory
  Setting of the memory behaviour of EDS47…
The factory setting is „on“.
When the memory is in "on" position, the alarms of an EDS47… are
maintained until a RESET is carried out via the menu (IRDH575) or the
RESET key is pressed on the EDS47…
When the memory if in "off" position, the alarm stored in the EDS47…
will be deleted when the next scanning is carried out, provided that no
insulation fault exists and no insulation fault location process is run-
ning.

6.8.8 CT Setup:
Setting of the CT type and connection monitoring for EDS47…:
  ADR:

Setting the BMS address of an EDS47… that is to be configured.

  k:

Setting the BMS channel that is to be configured.

Note:
When ADR:2-90 and k:1-12 are selected, the same CT type will be
set for every channel of every device address.
  Type:
– standard = measuring current transformers of circular and rectan-
gular type = factory setting
– split = split-core measuring current transformers
– off = channel switched off
  conn.-CT
On or off switching of the CT monitoring
Factory setting is „on“.

73 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

The CT connection monitoring of the EDS4…-12 recognizes whether a

measuring current transformer is correctly connected. This will be indicated
on the display after a test has been carried out as described in "Chapter 6.8.2
EDS Test". In "off position" this function is deactivated.

6.8.9 n-peak:
  n-peak: 1-255
Setting of the maximum automatic elongation of the measuring time
of the connected EDS47…if disturbances are likely to occur in the sys-
tem being monitored. By default, four measurements are carried out
per channel before the EDS47… proceeds to the next channel.
If disturbances occur during the measurement due to system interfer-
ences (signalled by the "Fault"-LED at EDS47…), the number of meas-
urements per channel will automatically be increased by the preset
number n, that means 4 + n measurements per channel are carried out
in this case. The n-times elongation of the measuring time per channel
will automatically be stopped, when the fault is eliminated.
Factory setting is n = 5.

The functions of the EDS470 menu and the position mode in

the EDS SETUP menu is not available in the Slave mode!
Both functions are only available in the Master mode
(address 1).

IRDH575_D00089_05_M_XXEN/01.2020 74
 Operation and setting

6.9 COM SETUP menu: Setting the BMS interface

6.9.1 Bus address (Addr: )

This menu item is used to set the BMS bus address of the IRDH575. Take care
that the bus address is not assigned twice.
The device is factory set to address 1 and hence acts as a Master.

If several IRDH575 are operated on one BMS bus, the

addresses of other ISOMETER®s must be assigned one after
the other, since only one device may represent the Master.

6.9.2 ISO Monitor

This function allows to query the current measured value as well as the mes-
sages of all bus-capable ISOMETER®s existing in the BMS network. After selec-
ting the bus address, the entire information stored by the selected device is
indicated on the display
The display indication is structured similar to the standard indication, but
instead of the indication of the measuring pulse, the selected bus address is
indicated. Without pressing a key, the indication changes to the standard in-
dication of the IRDH575 after about five minutes.
If there is no information available from the selected ISOMETER®, the message
"!!!!NO DATA!!!!" will be displayed.

< < BU S S C A N N I N G > >

Information is being searched: R= A D R: 02

! ! ! ! N O D ATA ! ! ! !
No data found: R= A D R: 02

I n s u l at i o n Fa u l t
Current data address 03: R= 010K W A D R: 03

75 IRDH575_D00089_05_M_XXEN/01.2020
Operation and setting

6.9.3 ISOnet
Use this menu item to activate the ISOnet function of an IRDH575.
Refer to page 24 for an ISOnet description.

6.9.4 Diagram COM SETUP

****IT-SYSTEM****
R > 010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

1. Exit
2. Addr: XXX Addr: XXX
3. ISONet: off ADR: 001
4. ISO Monitor .
.
.
ADR: 030
ISOnet : off
off
on

****IT-SYSTEM****
R >123 kW ADR: 01

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 Operation and setting

6.10 PASSWORD menu

6.10.1 Activating and setting the password

This menu can be used to activate a "Password" query. This protects the
ISOMETER® against unauthorized settings and modifications.

The desired password (menu item 2. Password: xxx) can be set with the UP/
DOWN keys and confirmed with the ENTER key.
The password can be activated in the menu item "3. Status: on" by clicking the
ENTER key. The factory setting is "3. Status: off", that means that the password
is deactivated.

6.10.2 Diagram PASSWORD

****IT-SYSTEM****
R >010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

1. Exit
2. Password: XXX Password: XXX
3. Status: off 000
.
.
.
999
Status : off
off
on

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Operation and setting

6.11 Menu LANGUAGE

6.11.1 Setting the national language

The menu item "Language" allows fault messages of the ISOMETER® to be set
to different languages. There is the choice of "German" and "English".
The device menu is not influenced by the language selection.

6.11.2 Diagram Language

****IT-SYSTEM****
R > 010 MW
- EDS: off -- auto --
******************

1. EXIT
2. HISTORY INFO
3. ISO SETUP
4. ISO ADVANCED
5. EDS SETUP
6. EDS 460/490
7. EDS 470
8. COM SETUP
9. PASSWORD
10. LANGUAGE
11. SERVICE

1. Exit
2. Text: Deutsch Text: Deutsch
Deutsch
English

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 Operation and setting

6.12 Menu SERVICE

This menu item is provided for the Bender service personnel and is protected
by a password against erroneous settings. It is intended to provide fast fault
clearance by qualified experts in the event of a device error.

6.13 Parameterization via Internet

The parameters of an IRDH575 indicated below can be checked and set from
a remote place of use by using a personal computer. In addition, a browser
(viewing program for Internet application) and our protocol converter
FTC470XET (BMS <==> Ethernet/TCP/IP) are required.

Remote setting is, for example, possible for:

  Response value Alarm 1 (1 kΩ…10 MΩ)

  Response value Alarm 2 (1 kΩ…10 MΩ)

  Operating principle alarm relay K1 (e.g. N/O operation)

  Operating principle alarm relay K2 (e.g. N/O operation)

  Measuring principle (AMP or DC)

  Current output ranges for external measuring instruments (0/4…20

mA)
  Maximum system leakage capacitance (150 µF or 500 µF)

  Time for repetition of the automatic self test (off/ 1 h/ 24 h)

  Starting time of the automatic self test (0.00…23.00 h)

  Language of the alarm messages to be displayed (D, GB)

  Setting the fault memory to ON or OFF

  EDS mode (on, off, auto, 1 cycle), start and stop conditions for the EDS
systems
  EDS type of system (DC, AC, 3 AC)

  EDS max. test current (1 / 2.5 / 10 / 25 / 50 mA)

  EDS Position Mode address (BMS address of the EDS47… to be

requested)
  EDS Position Mode channel (BMS channel of the EDS47… to be

requested)

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7. Serial interfaces

7.1 RS-485 interface with BMS protocol

The RS-485 interface is galvanically isolated from the device electronics and
current output serves as a physical transmission medium for the BMS proto-
col. If several IRDH575 or other bus-capable devices are interconnected in a
network via the BMS bus, the BMS bus must be terminated at both ends with
a 120 Ω resistor. (Switch S1 = ON).
An RS-485 network that is not terminated, is likely to get instable and may re-
sult in malfunctions. Only the first and the last device in one line may be ter-
minated. Devices in between must not be terminated with 120 Ω
(switch S1 = OFF). Hence, stub feeders in the network must not be terminated.
The length of the stub feeders is restricted to 1 meter.

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 Serial interfaces

7.2 Topology RS-485 network

The optimum topology for the RS-485 network is a daisy-chain connection. In
this connection, device 1 is connected to device 2, device 2 to device 3, device
3 to device n etc. The RS-485 network represents a continuous path without
branches.

7.2.1 Correct arrangement

Three examples for correct arrangement:

7.2.2 Wrong arrangement

Three examples for wrong arrangement:

7.2.3 Wiring
A suitable type of cable for the wiring of the RS-485 network is:
screened cable, core diameter ≥ 0.6 mm
(e.g. J-Y(St)Y 2x0.6), screen on one side connected to earth (PE).
Connection to the terminals A and B.
The number of bus nodes is restricted to 32 devices. When more devices are
to be connected, Bender recommends to use an RS-485 repeater DI1.

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Serial interfaces

33 64

1 32

DI1

7.3 BMS protocol (BMS)

This protocol is an essential part of the Bender Measuring Device Interface.
Data transmission generally makes use of ASCII characters.
Interface data are:
  Baud rate: 9600 baud
  Transmission: 1 start bit, 7 data bits, 1 parity bit, 1 stop bit (1, 7,
E, 1)
  Parity: even
  Checksum: sum of all transmitted bytes = 0 (without CR and
LF)
The BMS bus protocol works according to the MASTER-SLAVE principle. That
means that one device represents the MASTER while all other bus nodes are
SLAVES. It is important that only one MASTER is present in each network. All
bus nodes are identified by a unique address. The MASTER scans all other de-
vices on the bus cyclically, listens to their signals and then carries out specific
commands. Bus address 1 must be assigned to the Master, which can be one
IRDH575 device.

7.3.1 BMS Master

A Master can query all warning and operating messages from a slave.
If the bus address 1 has been selected for the IRDH575, this device automati-
cally represents the Master, that means that all addresses between 1 and 150
are cyclically scanned via the BMS bus for alarm and operating message. If the

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 Serial interfaces

Master receives no answer from five subsequent addresses, the scanning cyc-
le is started again. If the Master recognizes incorrect answers from a slave, the
fault message "Fault RS485" is issued by the Master.

Fa u l t R S 4 8 5
Rs=011kW . H
--EDS:on---auto---
******************
Faults may be caused when:
  Addresses are assigned twice

  A second master exists on the BMS bus

  Interference signals occur on the bus lines

  A defective device is connected to the bus

  Terminating resistors are not activated

7.3.2 BMS-Slave
In a BMS network for each slave an individual address between 2 and 30 has
to be selected. There may be no gaps of more than five subsequent addres-
ses, so that all slaves can be scanned by the Master. For IRDH575 a BMS
address can be selected from the address range 1…30. When assigning the
addresses, also other devices such as the EDS4… must be considered.
The correct reception of BMS data is indicated by a flashing point on the dis-
play on the right of the measuring pulse indication.
au t S 85
Rs=011kW . H Flashing point:
--EDS:on---auto--- BMS data re-
ceived

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Serial interfaces

If no flashing point appears, it may be attributed to the following:

  No Master available in the network

  More than one Master available in the network

  RS-485 interface (terminal A/B) not connected or reversed

In the Slave mode, the functions of the EDS470 menu and

the position mode in the EDS SETUP menu are not available!
Both functions are only available in the Master mode.

7.3.3 BMS operation in the Standby mode

The BMS function of the Master ISOMETER® is completely available in the
standby mode (Stand-by: F1/F2 bridged).
The function ISO Monitor in the COM menu can be used to request data from
other bus nodes, for example:
  Actual insulation values of other SLAVE ISOMETER®s connected to the

BMS bus
  Fault messages of all SLAVE devices connected to the BMS bus

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 Serial interfaces

The following table gives an overview about essential alarm messages and
the assignment of the messages indicated on the display or operator panels,
e.g. PRC1470.

Message Channel Meaning

Insulation Fault 1 Insulation resistance < setting Alarm 1

Insulation Fault 2 Insulation resistance < setting Alarm 2
Connection sys- Connection error L1/L2 against system
3
tem
Connection PE 4 Connection error /KE against PE conductor
Device error 5 Internal device error
Standby Isolated from the system to be monitored, no
6
insulation measurement

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Serial interfaces

7.3.4 Combination with EDS46… devices

The following illustration shows an IRDH575 device in combination with
EDS46… and the measuring current transformers W…for insulation fault lo-
cation.The factory setting of the devices can usually be maintained. If several
EDS46… are used, the addresses within the range 2 to 30 in subsequent order
must be used. For details about the EDS settings refer to EDS SETUP and
EDS460/490 on page 58 respectively page 70.

Un: 3(N)AC, AC
L1
L2
L3
N
PE

measuring
current
Us transformer
see name plate
to the
load

F F
6A 6A

A1 A2 L1 L2 L3 A1 A2 k1 l k2

IRDH575 EDS460

KE A B A B

PE

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 Serial interfaces

The following operating manuals are available when using the IRDH575 in
combination with EDS systems for other applications:
  Manual for EDS470 application:

power supply systems, extended systems, systems with frequency con-

verters, response sensitivity of at least 5 mA
  Manual for EDS473 application:
control systems, small systems, systems with PLC, response sensitivity
at least 0.5 mA
  Manual about project planning for EDS470 and EDS473 systems

  Manual for EDS460 /EDS490, Application:

power supply systems, extended systems, systems with frequency con-
verters, response sensitivity of at least 2 mA
for EDS461 /EDS491, Application:
control systems, small systems, systems with PLC, response sensitivity
at least 0.2 mA

7.3.5 Commissioning of an RS-485 network with BMS protocol

  Connect the terminals A and B of all bus nodes in one line
  Switch the terminating resistors on at the beginning and end of the
RS-485 network or in case of devices without a terminating switch, at
the end of the bus, connect a 120 Ω resistor to the terminals A and B.
  Switch the supply voltage US on.
  Determine one IRDH575 as the Master and assign address 1.
  Assign the addresses (2…150) successively without gaps to all other
IRDH575 devices and other bus nodes (see table below).
  Check whether a flashing point appears on all devices with a display
(BMS commands are being received). Other devices use an RS-485 LED
to signal the bus traffic.
  The sub menu "ISO-Monitor" in the COM SETUP menu allows insulation
values of the ISOMETER®s to be queried. Before starting the query, the
address of the ISOMETER® has to be entered.
  In the "EDS Test“ menu all preset Slave addresses can be checked

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Serial interfaces

BMS bus address ranges

Addresses* Device Meaning

0 There is no device with address 0 !
Information sent to BMS address 0 applies
to all devices connected to the BMS bus
(broadcast)
1 PRC1470 Control and indicating device
1…30 IRDH275B Insulation monitoring device
/375B/575
1…30 FTC470… Protocol converter
2…30 EDS47… Insulation fault evaluators (localisation)
31…60 SMO480 Signal converter relay
EDS4…E Insulation fault evaluator (localisation
2
1…90 EDS46… Insulation fault evaluators (localisation)
/ 49…
61…90 EDS4…E Insulation fault evaluators (localisation)
111…119 PGH47x Insulation fault test device
121…150 PGH47xE Insulation fault test device

*Malfunctions due to wrong address assignment!

Assigning wrong addresses to external devices may cause
malfunctions. Assign the addresses in a way that there are
no gaps of more than five subsequent addresses (1…30,
31…60, 61…90, 111…119 und 121…151).

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8. Factory settings

Menu Submenu Setting

1. EXIT
2. HISTORY INFO
3. ISO SETUP 1. Exit
2. Alarm1: 40 kΩ
3. Alarm2: 10 kΩ
4. K1: N.O Test
5. K2: N.O Test
---------- K3: N.C fixed setting
7. Memory: off
8. M+/M-: 0-20 mA
4. ISO ADVANCED 1. Exit
2. AGH: no
3. Ce. max: 150 µF
4. Measure: AMP
5. Autotest: 24 h
6. Clock: CET (HH:MM)
current date
7. Date:
(DD.MM.YYYY)
8. Test: 12:00
5. EDS.SETUP 1. EXIT
2. EDS: auto
3. System: 3 AC
4. MaxPuls: 25mA
5. K3 Alarm: on

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Factory settings

Menu Submenu Setting

6. EDS.460/490 1. Exit
2. General
Depends on setting
3. Channel:
EDS460/490
4. Relay:
5. Test/Reset
7. EDS470 1. Exit
2. EDS Monitor
3. EDS Test:
4. EDS Reset: Depends on setting
5. Relay: EDS460/490
6. Memory:
7. CT Setup:
8. n-peak:
8. COM SETUP 1. Exit
2. Addr: 1=Master
3. ISOnet: off
4. ISO Monitor:
9. PASSWORD 1. Exit
2. Password: 000
3. Status: off
10. LANGUAGE 1. Exit
2. Text: German
9. SERVICE (Access only for Bender service personnel)

Please check if the basic setting of the ISOMETER® complies with the require-
ments of the system to be monitored.

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9. Technical data IRDH575

9.1 Data in tabular form

The values marked with * are absolute values
Insulation coordination acc. to IEC 60664-1
Rated voltage.....................................................................................................................................................AC 800 V
Rated impulse voltage/pollution degree..............................................................................................................8 kV/3
Voltage ranges
IRDH575B1-4235:
Nominal voltage range Un ........................................................................................................ AC, 3NAC 20…150 V*
Nominal frequency fn ............................................................................................................................... 50…460 Hz
Nominal voltage range Un .................................................................................................................... DC 20…150 V*
IRDH575B1-435:
Nominal voltage range Un ........................................................................................................ AC, 3NAC 20…575 V*
Nominal frequency fn (for f < 50 Hz see characteristic curve on page 97) ............................................ 50…460 Hz
Nominal voltage range Un .................................................................................................................... DC 20…575 V*
IRDH575B2-435:
Nominal voltage range Un ..................................................................................................... AC, 3NAC 340…760 V*
Nominal frequency fn (for f < 50 Hz see characteristic curve on Page 97) ............................................ 50…460 Hz
Nominal voltage range Un .................................................................................................................. DC 340…575 V*
IRDH575B1-435:
Supply voltage Us (see name plate).......................................................................................................... 88…264 V*
Frequency range Us ................................................................................................................................... 42…460 Hz
Supply voltage Us (see name plate ...................................................................................................... DC 77…286 V*
IRDH575B1-427:
Supply voltage Us (see name plate).................................................................................................... DC 19.2…72 V*
Power consumption .......................................................................................................................................... ≤ 14 VA
Response values
Response value Ran1 (Alarm1) ................................................................................................................ 1 kΩ…10 MΩ
Response value Ran2 (Alarm2) ................................................................................................................ 1 kΩ…10 MΩ
Relative uncertainty (20 kΩ…1 MΩ) (acc. to IEC 61557-8:2007-01) ............................................................. ±15 %

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Technical data IRDH575

Relative uncertainty (1 kΩ…20 kΩ) ......................................................................................................+2 kΩ/+20 %

Relative uncertainty (1 MΩ…10 MΩ) ................................................................................................ 0.2 MΩ/+20 %
Measuring time......................................................................................................................... see characteristic curves
Hysteresis (1 kΩ…10 kΩ)................................................................................................................................... +2 kΩ
Hysteresis (10 kΩ…10 MΩ)................................................................................................................................. 25 %
Measuring circuit for insulation measurement
Measuring voltage Um ........................................................................................................................................ ≤ 40 V
Measuring voltage Um (IRDH575B1-4227)........................................................................................................ ≤ 10 V
Measuring current Im (at RF = 0Ω) ................................................................................................................ ≤ 220 μA
Internal DC resistance DC Ri ............................................................................................................................ ≥ 180 kΩ
Internal impedance Zi, at 50 Hz...................................................................................................................... ≥ 180 kΩ
Permissible extraneous DC voltage Ufg (version B1)................................................................................... ≤ DC 810 V
Permissible extraneous DC voltage Ufg (version B2)................................................................................ ≤ DC 1060 V
System leakage capacitance Ce ...................................................................................................................... ≤ 500 μF
Factory setting Ce .................................................................................................................................................. 150 μF
Measuring circuit for insulation fault location (EDS)
Test current Ip DC ............................................................................................................................ 1/2.5/10/25/50 mA
Test pulse/break ................................................................................................................................................... 2 s/4 s
Displays
Display, illuminated.............................................................................................................................. four-line display
Characters (number of characters)........................................................................................................................ 4 x 16
Display range, measuring value .............................................................................................................. 1 kΩ…10 MΩ
Operating uncertainty (20 kΩ…1 MΩ) (acc. to IEC 61557-8:2007-01) .................................................... ±15 % **
Operating uncertainty (1 kΩ…20 kΩ) ............................................................................................ ±1 kΩ/±15 % **
Operating uncertainty (1 MΩ…10 MΩ) ................................................................................... ±0.1 MΩ/±15 % **
** = under test conditions in accordance with IEC 61326-2-4, the tolerances may double
Inputs/Outputs
Test/Reset button ................................................................................................................................ internal/external
Current output for measuring instrument SKMP (scale centre point = 120 kΩ):..........................................................
Current output IRDH575 (max. load)..................................................................................... 0/4…20 mA (≤ 500 Ω)
Accuracy current output (1 kΩ…1 MΩ)
in relation to the displayed measured value ....................................................................................... ±10 %, ±1 kΩ

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 Technical data IRDH575

Serial interface
Interface/protocol ...................................................................................................................................... RS-485/BMS
Cable length ................................................................................................................................................. ≤ 1,200 m
Recommended cable (screened, screen on one side connected to PE)................................................. J-Y(St)Y 2x0,6
Terminating resistor................................................................................................................................. 120 Ω (0,5 W)
Switching elements
Switching components............................................................... 3 changeover contacts: K1 (Alarm 1), K2 (Alarm2),
...................................................................................................... K3 (device fault, additionally selectable EDS Alarm)
Operating principle K1, K2............................................................................................................ N/O or N/C operation
Factory setting (Alarm1/Alarm2)............................................................................................................ N/O operation
Operating principle K3.............................................................................................................................. N/C operation
Electrical endurance.................................................................................................................................. 12, 000 cycles
Contact class.............................................................................................................................. IIB (DIN IEC 60255-23)
Rated contact voltage ...................................................................................................................... AC 250 V/DC 300 V
Protected separation up to ....................................................................................................................... AC/DC 150 V
Making capacity.............................................................................................................................................. AC/DC 5 A
Breaking capacity ............................................................................................................. 2 A, AC 230 V, cos phi = 0.4
.......................................................................................................................................... 0.2 A, DC 220 V, L/R = 0.04s
Contact current at DC 24 V................................................................................................................. ≥ 2 mA (50 mW)
General data
EMC ................................................................................................................. acc. to IEC 61326-2-4:2006-06 Ed. 1.0
Shock resistance acc. to IEC 60068-2-27..................................................................................................... 15 g/11 ms
Bumping acc. to IEC 60068-2-29................................................................................................................... 40 g/6 ms
Vibration resistance acc. to IEC 60068-2-6 (device in operation)..................................................... 1 g/10…150 Hz
Vibration resistance acc. to IEC 60068-2-6 (during transport)......................................................... 2 g/10…150 Hz
Ambient temperature, during operation ........................................................................................... -10 °C…+55 °C
Storage temperature range ................................................................................................................ -40 °C…+70 °C
Climatic class according to IEC 60721-3-3 .............................................................................................................. 3K5
Operating mode............................................................................................................................ continuous operation
Mounting.............................................................................................................................. as indicated on the display
Distance to adjacent devices............................................................................................................................ ≥ 30 mm
Connection .......................................................................................................................................... plug-in terminals
Connection, rigid/flexible .............................................................................................. 0.2…4 mm2/0.2…2.5 mm2
Connection, flexible with connector sleeve, without/with plastic sleeve......................................... 0.25…2.5 mm2

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Technical data IRDH575

Conductor sizes (AWG)...................................................................................................................................... 24…12

Degree of Protection, internal components (DIN EN 60529) .................................................................................. IP30
Degree of Protection, terminals (DIN EN 60529)..................................................................................................... IP20
Degree of Protection, in case of door mounting (DIN EN 60529) ........................................................................... IP40
Degree of Protection, in case of mounting into a door with panel sealing (DIN EN 60529).................................. IP42
Type of enclosure: suitable for panel mounting ............................................................................... free from halogen
Flammability class ........................................................................................................................................... UL94 V-0
Software version ............................................................................................................................................ D185 V1.6
Weight ............................................................................................................................................................... ≤ 900 g
Option "W"
Shock resistance acc. to IEC 60068-2-27 (device in operation).................................................................. 30 g/11 ms
Bumping acc. to IEC 60068-2-29 (transport)................................................................................................ 40 g/6 ms
Vibration resistance acc. to IEC 60068-2-6................................................................................... 1.6 mm/10…25 Hz
.............................................................................................................................................................. 4 g/25…150 Hz
Ambient temperature, during operation ........................................................................................... -25 °C…+70 °C
Ambient temperature, during operation .......................> 55 °C no continuous insulation fault location with 50 mA
Storage temperature range ................................................................................................................ -40 °C…+85 °C

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 Technical data IRDH575

9.2 Standards, approvals and certifications

The ISOMETER® was designed under consideration of the following standards:
- DIN EN 61557-8 (VDE 0413-8): 2015-12
- DIN EN 61557-8 Ber 1 (VDE 0413-8 Ber 1): 2016-12
- IEC 61557-8: 2014
- IEC 61557-8: 2014/COR1: 2016
- DIN EN 61557-9 (VDE 0413-9): 2015-10
- IEC 61557-9: 2014
Subject to change! The specified standards take into account the edition valid
until 01.2020 unless otherwise indicated.

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Technical data IRDH575

9.3 Characteristic curves

9.3.1 Characteristic curves of the ISOMETER®

ISOMETER® response times in relation to system leakage capaci-

tances of:
Ce = 1…500 µF
Un = 20…575 V (Version B1) / 50 Hz
Un = 340…760 V (Version B2) / 50 Hz
1000
≤ 10 MΩ
tan [s]

RF

100

≥ 0 kΩ

10

1
1 10 100 1000
Ce [µF]

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 Technical data IRDH575

Max. AC voltage between system and earth in the frequency

range < 50 Hz

Un [V]
1000 IRDH575B2
760 V

IRDH575B1
575 V

100
0,1 0,3 1 10 100
fn [Hz]

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Current output 0…20 mA

RF [kW]
10 000

1000

100

10

1
0 5 10 15 20 25
I [mA]

Ω
Ω

RF = Insulation fault in kΩ
I = Current output in mA

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 Technical data IRDH575

Current output 4…20 mA

RF [kW]
10 000

1000

100

10

1
0 5 10 15 20 25
I [mA]

Ω
Ω

RF = Insulation fault in kΩ
I = Current output in mA

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Technical data IRDH575

9.3.2 Characteristic curves of the insulation fault locators

EDS46… /EDS49…

Allowable response values for AC systems

RF [kΩ]

100

90

80

70
2 mA
60 5 mA
10 mA
50

40

30

20

10

0
24 48 110 230 400
Un [V]

Allowable response values for 3AC systems

RF [kΩ]

250

200

2 mA
150 5 mA
10 mA

100

50

0
24 48 110 230 400 500 690
Un [V]

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 Technical data IRDH575

Allowable response values for DC systems

RF [kΩ]
60

50

40

30
2 mA
5 mA
20 10 mA

10

0
24 48 110 230
Un [V]

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9.3.3 Characteristic curves for the insulation fault location

system EDS470

Allowable response values

45
40
35

30
AC
RF 25
3AC
(kW) 20
DC
15

10
5

0
24 48 110 230 U n (V)

Curve 1a:
Allowable response values in relation to the system voltage to be monitored
for a maximum system leakage capacitance Ce as shown by curve 2a
In order to start automatic insulation fault location, the resistance values to be
selected for ALARM 1 and ALARM 2 must be sufficiently low at a given nominal
voltage. Otherwise, the EDS test current is not sufficient to localise the insula-
tion fault. Determine the suitable values by means of the characteristic curves.

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 Technical data IRDH575

90
80

70

60
AC
RF 50
3AC
(kW) 40
DC
30

20

10
0
U n (V)
230 400 500 690 1000

Curve 1b:
Allowable response values in relation to the system voltage to be monitored
for a maximum system leakage capacitance Ce as shown in curve 2b.

103 IRDH575_D00089_05_M_XXEN/01.2020
Technical data IRDH575

Maximum system leakage capacitances for the insulation fault lo-

cation system EDS470
100
90
80
70
60 AC
Ce
50 3AC
(µF) 40 DC
30
20
10
0
24 48 110 230 U n (V)

Curve 2a:
Maximum allowable system leakage capacitance in relation to the system vol-
tage to be monitored. Up to this limiting value of the system leakage capaci-
tance, the EDS system has the sensitivity illustrated in curve 1a.

5
4,5
4
3,5
3 AC
C e 2,5 3AC
(µF) 2 DC
1,5
1
0,5
0
230 400 500 690 1000 U n (V)

Curve 2b:
Maximum allowable system leakage capacitance in relation to the system vol-
tage to be monitored. Up to this limiting value of the system leakage capaci-
tance, the EDS470 system has the sensitivity shown in curve 1b.

IRDH575_D00089_05_M_XXEN/01.2020 104
 Technical data IRDH575

120

100

80
R F max
(%)
60

40

20

0,1 0,3 0,5 0,7 1,1 1,5 2,2 2,5 4 6 8 10 x Ce max

Curve 3:
A reduction of the response sensitivity at system leakage capacitances greater
than the maximum permissible value of Ce taken from the curves 2a and 2b.
The indication of the test current on the IRDH575 display in case of high sys-
tem leakage capacitance also changes.
When considering the curves, a point to be taken into account is that the sum
of the pre-capacitances upstream the measuring current transformer must
amount to at least 50 % of the total capacitance. Otherwise it may result in
wrong alarm messages.
A value of 20 000µFV/400 V = 50µF is taken for the system leakage capaci-
tance. Exceeding the limiting value may result in false trippings.

105 IRDH575_D00089_05_M_XXEN/01.2020
Technical data IRDH575

Limiting values for the insulation fault location system EDS473

In order to start automatic insulation fault location, the resistance values set
for ALARM 1 and ALARM 2 at a given nominal voltage must not be too high.
Otherwise, the EDS test current will not be sufficient for the detection of the
insulation fault. Determine the suitable values for your installation by means
of the characteristic curves

700

600

500

400
RF (k)

AC
DC
300

200

100

0
0 50 100 150 200 250 300 350
Un (V)

Curve 4:
Allowable response values in relation to the system voltage to be monitored
at a maximum system leakage capacitance Ce as shown by curve 5.
DC: set a test current of 1 or 2.5 mA.
AC: set a test current of 2.5 mA.
The EDS473 system is suitable for nominal voltages of AC 265 V and DC 308 V.

IRDH575_D00089_05_M_XXEN/01.2020 106
 Technical data IRDH575

Maximum system leakage capacitances for the insulation fault lo-

cation system EDS473

5
Ce (μF)

AC
4
DC

0
0 100 200 300 400
Un (V)

Curve 5:
Maximum allowable system leakage capacitance in relation to the system vol-
tage to be monitored.
DC: the test current is to be set to 1 or 2.5.
AC: the test current is to be set to 2.5 mA.

107 IRDH575_D00089_05_M_XXEN/01.2020
Technical data IRDH575

120

100

80
RF max [%]

60

40

20

0
0 0,5 1 1,5 2 2,5 3 3,5
x Ce max [P F]

Curve 6:
When the system leakage capacitances are greater than the maximum per-
missible value for Ce, as shown in curve 5, the response sensitivity decreases.
The indication of the test current on the IRDH575 display in case of high sys-
tem leakage capacitance also changes.
When considering the curves, a point to be taken into account is that the sum
of the pre-capacitances upstream of the individual measuring current trans-
former must amount to at least 50 % of the maximum total capacitance.
Otherwise, it may result in wrong alarm messages.
A value of 300 µFV/230 V = 1.3 µF is taken to be the maximum system leakage
capacitance value. When the limiting value is exceeded, false tripping may
occur.

IRDH575_D00089_05_M_XXEN/01.2020 108
 Value of the respective number

109
Position of
numbers
0= 1= 2= 3= 4=
from the
left
1 K1: N/O operation Test K1: N/C operation Test K1: flashing function K1: N/O operation K1: N/C operation

Status number
2 K2: N/O operation Test K2: N/C operation Test K2: flashing function K2: N/O operation K2: N/C operation

3 no external coupling
4 Cemax 1 µF ** Cemax 10 µF ** Cemax 150 µF Cemax 500 µF
5
6 Self test every 24 hours Self test every hour no periodic self test

7 Language German Language English

Password protection not Password protection
8 activated activated
AMP measuring
9 DC measuring principle
principle
max. filter frequency max. filter frequency 1Hz max. filter frequency max. filter frequency
10 0.1Hz ** ** 10Hz ** 50Hz **
min. filter frequency min. filter frequency 1Hz min. filter frequency min. filter frequency
11 0,1Hz ** ** 10Hz ** 50Hz **
12 BMS mode ** Isodata ** test data **
Bus address in the tens
13 place IRDH575 Value: 5 ... 9
Bus address in the units
14 place IRDH575 Value: 5 ... 9

15 Number of pulses 2-9 ** Value: 5 ... 9

** The parameters marked with two asterisks are settable via the Service menu item! A password is required for that
purpose !

IRDH575_D00089_05_M_XXEN/01.2020
Technical data IRDH575
Technical data IRDH575

Dimension diagram enclosure IRDH575

All dimensions in mm
  Panel cut out 138 x 90 mm

IRDH575_D00089_05_M_XXEN/01.2020 110
 Technical data IRDH575

9.4 Ordering details

9.4.1 Standard version

Type Nominal volt. Un Supply volt. Us Art. No.

IRDH575B1-427 AC 20…575 V --- B91065502

DC 20…575 V DC 19.2…72 V

IRDH575B1-435 AC 20…575 V AC 88…264 V B91065500

DC 20…575 V DC 77…286 V

IRDH575B1-4227 AC 20…150 V --- B91065505

DC 20…150 V DC 19.2…72 V

IRDH575B1-4235 AC 20…150 V AC 88…264 V B91065504

DC 20…150 V DC 77…286 V

IRDH575B2-435 AC 340…760 V AC 88…264 V B91065503

DC 340…575 V DC 77…286 V

Device with ending "W" provide improved shock and vibration resistance. A
special varnish of the electronics provides higher resistance against mechani-
cal stress and moisture. This makes the devices suitable for use in ships, on rol-
ling stock and in seismic environment.

111 IRDH575_D00089_05_M_XXEN/01.2020
Technical data IRDH575

9.4.2 Protection against dust and moisture

Type Dimensions Art. No.

Panel sealing, degree of

144 x 96 mm B98060006
protection IP42

Transparent cover,
degree of protection 144 x 96 mm B98060007
IP65

9.4.3 Adaptor for rail mounting

The following adaptor allows fast mounting of the IRDH575 on a DIN rail
according to IEC 60715.

Type Art. No.

Adaptor for DIN rail TS35 B98060010

9.4.4 Measuring instruments

Measuring
Type Dimensions Art. No.
range

9620-1421 0…20 mA 96 x 96 mm B986841

9620S-1421 0…20 mA 96 x 96 mm B986842

IRDH575_D00089_05_M_XXEN/01.2020 112
 Technical data IRDH575

113 IRDH575_D00089_05_M_XXEN/01.2020
INDEX
A - Allowable system leakage
Alarm LED 1 39 capacitance in relation to the system
Alarm LED 2 39 voltage 104
Alarm messages 85 - Reduction of the response sensitivity
Alarm relays, operating principle setting 51 in relation to Cemax 105
Automatic self test, repetition time 55 Characteristic curves, EDS473
Automatic self test, starting time 56 - Allowable response values insulation
fault in relation to nominal voltage
B 106
BMS bus, address ranges 88 - Allowable system leakage
BMS Master 82 capacitance in relation to the system
BMS protocol 82 voltage 107
BMS Slave 83 - Reduction of the response sensitivity
in relation to Cemax 108
C Characteristic curves, IRDH575
Changing the measuring principle 55 - Current output 0...20 mA 98
Characteristic curves, EDS46... /EDS49... - Current output 4...20 mA 99
- Allowable response values for 3 AC - Max. AC voltage between system and
systems 100 earth 97
- Allowable response values for 3AC - Response time in relation to system
systems 100 leakage capacitances 96
- Allowable response values for AC sys- Checking all BMS bus nodes 70
tems 100 Combination with EDS46... devices 86
- Allowable response values for DC sys- Commissioning flow chart IRDH575 33
tems 101 Commissioning of a BMS network 87
Characteristic curves, EDS470 Current output 0/4...20 mA 99
- Allowable response values insulation
fault in relation to nominal voltage
102

IRDH575_D00089_05_M_XXEN/01.2020 114
D alarm 2 (Relay/op.mode) 67
Dimension diagram enclosure 110 - Setting the response delay, T(on) 66
Display in the menu mode 41 - Setting the system coupling (DC/1
AC/3 AC) 64
E - Starting the EDS with IRDH575 or
EDS4... continuous EDS mode (Trigger) 63
- Common message 28 - To enable or disable the CT monito-
- Max. test current, setting 60 ring (CT monitor) 66
- Start and stop conditions, setting - EDS470/473
auto, on, off, pos, 1cycle 58 - CT Setup 73
- Type of the system, setting (DC/1AC/ - EDS monitor - indication of all de-
3AC) 60 tected insulation faults 70
EDS46.../49... - Elongation of the measuring time 74
- Adapting frequency converters to the - Memory behaviour of EDS4...-12,
system being monitored (inverter) setting 73
66 - On or off switching of the CT monito-
- Assigning an EDS Alarm to one or ring 73
both common relays (Alarm - Operating principle of the alarm re-
on/off) 67 lays of EDS47..., setting 73
- EDS test (test of all BMS bus nodes) - Reset 70
68 - Test of all BMS bus nodes 70
- Setting delay on response, T(off) 66 Essential functions, ISOMETER 17
- Setting response values (ResVal) 66 External coupling devices 55
- Setting the CT type (CT-W/WR) 66 External RESET button 32
- Setting the memory behaviour of an External TEST button 32
EDS. 63
- Setting the nominal frequency 64 F
- Setting the operating mode of the 12 Factory settings 89
channel-related alarm relays Fault messages, language setting 78
(Channel/Op.mode, only EDS490/ Flashing point 83
491) 67 Function 19
- Setting the operating mode of the Function input F1/F2 22
common alarm relays alarm1 and

115 IRDH575_D00089_05_M_XXEN/01.2020
H O
How to use this manual 8 Operating features and displays IRDH575
38
I Option "W" 17
INFO button 38
Insulation fault evaluator (EDS) 18 P
Insulation fault location 18 Parameter setting via Internet 79
Interconnected systems 21 Product description 18
ISO Monitor 75
ISOnet function R
- activate, deactivate 76 Real-time clock 20
- description 24 Relay K3 28
RESET button 19, 38
M Response values Alarm 1 and Alarm 2 set-
Measuring instruments 112 ting 50
Memory database 48 RS-485 interface 80
Menu RS-485 network
- COM SETUP 75 - correct arrangement 81
- EDS 460/490 63 - wrong arrangement 81
- EDS 470 70 RS-485, termination 32
- EDS SETUP 58
- HISTORY INFO 49 S
- ISO ADVANCED 55 Self test, ISOMETER 38
- ISO SETUP 50 Service 9
- LANGUAGE 78 Setting the BMS bus address of the IRDH575
- PASSWORD 77 75
- SERVICE 79 Setting the date 56
- structure 46 Setting the maximum test current 60
Monitor Setting the real-time clock 55
- EDS Function 70 Specify allowable response values
- of the insulation fault evaluator
EDS46.../EDS49... 100
- of the insulation fault evaluator

IRDH575_D00089_05_M_XXEN/01.2020 116
 EDS470 102
- of the insulation fault evaluator
EDS473 106
- see characteristic curves 96
Standards 95
Status number 109
Support 9
System leakage capacity, adaptation 55

T
Technical data 91
Terminating resistor 80
TEST button 38
Test current 20, 61
Test of all bus nodes, EDS test 68
Topology RS-485 81
Training courses 10

W
Wiring 81
Wiring diagram 32
Work activities on electrical installations 13
workshops 10

117 IRDH575_D00089_05_M_XXEN/01.2020