Relion 605 series
Feeder protection and control
REF601
Product Guide
Relion 605 series
Relion 605 series
Feeder Protection
REF601
Product version: 2.0
1MDB07207-YN
Contents
1. Description......................................................................3
13. Inputs and outputs...........................................................6
2. Relay functions................................................................3
14. Communication................................................................6
3. Protection functions........................................................4
15. Application warning.........................................................6
4. Application.......................................................................4
16. Technical data..................................................................7
5. Sensor technology..........................................................4
17. Protection functions.......................................................13
6. Control............................................................................5
18. Dimension and mounting...............................................16
7. Measurement..................................................................5
19. Selection and ordering data...........................................17
8. Event log.........................................................................5
20. Accessories and ordering data.......................................18
9. Recorded data.................................................................5
21. Terminal diagram...........................................................19
10. Self-supervision and test function....................................5
22. References....................................................................20
11. Trip-circuit supervision.....................................................6
23. Document revision history..............................................20
12 Access control................................................................6
Disclaimer
The information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any
errors that may appear in this document.
Copyright 2012 ABB Ltd.
All rights reserved.
Trademarks
ABB and Relion are registered trademark of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered
trademarks of their respective holders.
ABB
1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
Issued: 2012-03-27
Revision: E
1. Description
REF601 is a dedicated feeder protection relay,
intended for the protection and control of utility
substations and industrial power systems, in primary
and secondary distribution networks. REF601 is a
member of ABBs Relion product family and part of
its 605 series.
The relay uses the Rogowski coil sensors for current measurement. The new feeder protection relay
is designed to unleash the advantages of current
sensors for protection and control in medium voltage
applications.
2. Relay functions
REF601 offers pre-configured functionality which facilitates easy and fast commissioning of switchgear.
To emphasize the relays simplicity of usage, only application specific parameters needs to set within the
relays intended area of application.
The settings can be changed by LHMI (local humanmachin interface) or through optional communication
interface MODBUS master with setting capability.
The relay offers protection, control, measurement
and condition monitoring functionality.
Table 1. Supported functions of REF601
Functionality
IEC
ANSI
Non-directional overcurrent protection, low-set stage
3I>
51
Non-directional overcurrent protection, high-set stage
3I>>
50-1
Non-directional overcurrent protection, very high-set stage
3I>>>
50-2
Earth-fault protection, low-set stage
Io>
51N
Earth-fault protection, high-set stage
Io>>
50N
Three phase transformer inrush detector
3I2f>
68
I <-> O CB
I <-> O CB
TCS
TCM
Three-phase current measurement
3I
3I
Residual current measurement
Io
In
Protection
Control
Circuit-breaker control
Condition monitoring
Trip circuit supervision
Measurement
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
3. Protection functions
REF601 offers three-stage phase segregated
overcurrent and two-stage earth-fault protection
functions. The transformer inrush detector function
is incorporated to prevent unwanted trippings due
to energizing of transformers.
The low-set stages for overcurrent and earth-fault
protection are equipped with selectable characteristics - Definite time (DT) and Inverse definite
minimum time (IDMT) . The relay features standard IDMT characteristics Normal Inverse (NI),
Very Inverse (VI), Extremely Inverse (EI), Long-time
Inverse (LI) and a special characteristic RI inverse
(RI) for better co-ordination with rest of the network
protection.
50-1
50-1
50-2
50-2
50N
Lockout
relay
86
REF601
Lockout
relay
86
REF601
Figure 1. Protection function overview of REF601
with earth current measurement by internal
calculation
Figure 2. Protection function overview of REF601
with earth current measurement by exter
nal core-balance current transformer
4. Application
The REF601 is a protection relay aimed at protection and control of incoming and outgoing feeders
in MV distribution substations. The relay can be
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
applied for the short-circuit over current and earthfault protection of overhead lines and cable feeders
of distribution and sub-distribution network.
5. Sensor technology
Sensors based on Rogowski coil principle have
been introduced in order to get benefit of improved
performance like saturation of conventional current
transformer and equipment size reduction. ABB is
offering two types of sensors - KECA and KEVCR
which employees the Rogowski coil principle for
measurement of current. Albeit this principle is far
from new, now it is possible to exploit the advantages of sensor with the advent of numerical relays
like REF601.
The relay is well-matched for mounting on the ABB
circuit breakers VD4 & HD4. Along with sensors, it
will be a part of ABBs offering of integrated apparatus. The relay has small mounting depth and does
not have any loose mounting accessories while the
press-fit mounting arrangement makes it suitable
for quick and easy installation on switchgear panels
too.
50N
Rogowski coil is a toroidal coil without an iron core,
placed around the primary conductor in the same
way as the secondary winding in a current transformer. However, the output signal from Rogowski
ABB
Feeder Protection
REF601
Product version: 2.0
coil is not current, but a voltage. Due to absence
of ferromagnetic core, the sensor is linear up to the
highest currents.
The wide measurement range of sensors with high
accuracy eliminates the need for high variants of
conventional instrument transformers, resulting in
simplified engineering, logistics and reduced inventory. The low level voltage signals and integrated
secondary cables contribute to easy and fast installation with enhanced safety.
6. Control
The relay offers control of one circuit breaker with
dedicated push-buttons and guidance on local HMI
for opening and closing. It includes two dedicated
outputs for breaker control. The breaker control is
also possible through optional MODBUS communication.
7. Measurement
The relay continuously measures phase currents
and earth current. Earth current can be measured
using external core balance current transformer or
can be calculated internally.
During service, the default view of display shows
the most loaded phase current in primary terms
(Amps) and the earth current in terms of nominal
value of CT. The values measured can be accessed
locally via the user interface on the relay or remotely
via the communication interface of the relay.
To maintain the measurement accuracy of the
overall protection system, the sensor calibration
constants available on the rating plate of sensors
can be programmed to the relay.
8. Event log
To collect sequence-of-events (SoE) information,
the relay incorporates a non-volatile memory with a
capacity of storing 100 events with associated time
stamps with resolution of 1 milli second. Event log
includes trip circuit supervision status, protection
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1MDB07207-YN
operation status, binary I/O status and relay fault
code. The event logs are stored sequentially, the
most recent being first and so on. The non-volatile
memory retains its data also in case the relay temporarily loses its auxiliary supply.
The event log facilitates detailed post-fault analysis
of feeder faults and disturbances. The SoE information can be accessed locally via the user interface
on the relay front panel or remotely via the communication interface of the relay.
9. Recorded data
The relay stores fault records of analog values for
two trip events in non-volatile memory. The fault
recording is triggered by the trip signal of protection
function. A sample of analog value is recorded for
every power frequency cycle. Fifteen such samples
are recorded, five before the trip and ten after the
trip event. These records enable the user to analyze
the two most recent power system events. Each
record includes the current values for three phases
and earth current.
The relay records the number of phase and earth
fault trip events into dedicated trip counters. These
trip counters can not be reset by the user and are
stored in non-volatile memory.
The recorded information can be accessed locally
via user interface on the relay front panel and can
be uploaded for subsequent fault analysis.
10. Self-supervision and test function
The relays built-in self-supervision system continuously monitors the state of the relay hardware
and the operation of the relay software. Any fault
or malfunction detected will be used for alerting
the operator. A permanent relay fault will block the
protection functions of the relay to prevent incorrect
relay operation.
The relay supports a built-in test mode which enables user to test the relay HMI and trip outputs.
Feeder Protection
REF601
Product version: 2.0
1MDB07207-YN
11. Trip-circuit supervision
The trip-circuit supervision continuously monitors
the availability and operability of the trip circuit. It
provides open-circuit monitoring both when the circuit breaker is in its closed and in its open position.
It also detects loss of circuit-breaker control voltage.
14. Communication
The relay is available with optional communication feature with Modbus RTU protocol on RS-485
bus with two wire connection. This allows relay to
connect to control and monitoring system through
serial communication for remote monitoring.
12. Access control
To protect the relay from unauthorized access and
to maintain the integrity of information, the relay
is armed with a three level, role-based user authentication system with individual password for
the operator, engineer and administrator level. The
password is a combination of different navigation
keys.
15. Application warning
In case the relay REF601 is supplied with UPS stepwave or square-wave, an interposing transformer is
needed to keep the supply voltage (peak voltage)
below the upper limit of the relay.
These are the recommended transformer characteristics:
Nominal Power: 20 VA
Secondary voltage: in the range 30...150 V AC
13. Inputs and outputs
The relay is equipped with three Rogowski sensor
inputs. The relay has an additional earth-current
input suitable for a 1A which can be connected to
core-balanced current transformer /split core current transformer.
Relay binary input/output overview:
Two binary inputs one for remote-trip and one for
remote-reset
One normally open trip output, with trip circuit
supervision functionality
One normally-closed trip output
Two signalling outputs one for phased overcurrent fault and one for earth fault
One breaker close output
Unit ready / IRF output
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
LED indication for Ready/IRF, Protection start,
protection trip, Phase fault and Earth fault trip,
Trip circuit fault
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
16. Technical data
Table 2. Dimensions
Description
Value
Width
frame
130.0 mm
case
121.5 mm
Height
frame
160.0 mm
case
151.5 mm
Depth
case
102.0 mm (92 + 10 mm)
Weight
relay
1.2 kg
Table 3. Power supply
Description
Value
Uaux nominal
24...240 V AC, 50 and 60 Hz
24...240 V DC
Uaux variation
85...110% of Uaux (20.4...264 V AC)
70...120% of Uaux (16.8...288 V DC)
Burden of auxiliary voltage supply under < 12.0 VA
quiescent (Pq)/operating condition
Ripple in the DC auxiliary voltage
Max 12% of the DC value (at frequency of 100 Hz)
Maximum interruption time in auxiliary
50 ms at Uaux rated
DC voltage without resetting the relay
Table 4. Energizing inputs
Description
Value
Rated frequency
50/60 Hz
Phase sensor
inputs
5 Hz
Input type:
Rogowski coil sensor
Rated transformation ratio, Kra
250A / 0.15V at 50Hz
250A / 0.18V at 60Hz
Earth current
input
Linear current measurement
4A - 25 kA
Input type
Current transformer
Rated current, In
1A
Linear current measurement
0.5- 12.5 x In
Thermal withstand capability:
Continuously
4A
For 1 sec
100 A
Dynamic current withstand:
ABB
Half-wave value
250 A
Input impedance
< 100 m
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Feeder Protection
REF601
Product version: 2.0
Table 5. Binary input
Value
Description
Rated voltage
24...240 V AC / DC
Operating range
85...110% of Uaux for AC and 70...120% of Uaux for DC
Current drain
2...20 mA
Power consumption / input
< 0.5 W
Input sensing time
100 ms
Table 6. Double-pole power output relay with TCS function (Trip 2 output - Normally open, pulsed contact)
Value
Description
Rated voltage
240 V AC / DC
Continuous contact carry
Make and carry for 3.0 s
8A
15 A
Make and carry for 0.5 s
30 A
Breaking capacity when the control-circuit time
5A/3A/1A
constant L/R<40 ms, at 48/110/220 V DC
(two contacts connected in series)
Minimum contact load
100 mA at 24 V AC / DC
Trip-circuit supervision (TCS):
Control voltage range
Current drain through the supervision circuit
48...250 V AC / DC
~ 1.5 mA
Minimum voltage over the TCS contact
20V AC / DC (15...20 V)
Table 7. Single-pole power output relay (Trip 1 output - Normally closed, pulsed contact)
Value
Description
Rated voltage
240 V AC / DC
Continuous contact carry
8A
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
Make and carry for 3.0 s
15 A
Make and carry for 0.5 s
30 A
Breaking capacity when the control-circuit time
5A / 0.2 A
constant L/R<40 ms, at 35/220 V DC
Minimum contact load
Pulse duration of contact operation
100 mA at 24 V AC / DC
200 msec
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
Table 8. Single-pole signal and IRF output relay (O/C and E/F Trip, Unit ready, Breaker close)
Value
Description
Rated voltage
240 V AC / DC
Continuous contact carry
6A
Make and carry for 3.0 s
8A
Make and carry for 0.5 s
10 A
Breaking capacity when the control-circuit time
4A / 0.15 A
constant L/R<40 ms, at 35/220 V DC
Minimum contact load
100 mA at 24 V AC / DC
Table 9. Degree of protection of relay
Value
Description
Front side
Side with terminal connector
IP 43
IP 20
Table 10. Environmental conditions
Value
Description
Operating temperature range
-25...+70C (<16 h)
Short-time service temperature range
Relative humidity
Atmospheric pressure
Altitude
-25...+55C
< 93%, non-condensing
86...106 kPa
Transport and storage temperature range
up to 2000 m
-40...+85C
Table 11. Environmental tests
Description
Type test value
Dry heat test (humidity < 50% )
Reference
IEC 60068-2-2
IEC 60068-2-48
Working
Storing
96 h at +70C
96 h at +85C
Dry cold test
Working
Storing
IEC 60068-2-1
IEC 60068-2-48
96 h at -25C
96 h at -40C
Damp heat test, cyclic
IEC 60068-2-30
2 cycles at +25C+55C
humidity > 93%
Damp heat test, steady state
IEC 60068-2-78
96 h at +40C, humidity
> 93%
ABB
1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
Table 12. Electromagnetic compatibility tests
Description
Type test value
Reference
IEC 61000-4-12
1 MHz burst disturbance test:
IEC 60255-22-1, class III
Common mode
Differential mode
2.5 kV, 1MHz, 400 pulses/sec
1.0 kV, 1MHz, 400 pulses/sec
IEC 60255-22-2, class III
IEC 61000-4-2
Electrostatic discharge test:
Contact discharge
Air discharge
6 kV, 150 pF/330
8 kV, 150 pF/330
IEC 60255-22-3, class III
IEC 61000-4-3
Radio frequency, electro-magnetic
field immunity test:
10 V/m
f=80-1000 MHz
10 V/m
f=80, 160, 450, 900 MHz
IEC 60255-22-4, class A
IEC 61000-4-4
Fast transient disturbance tests:
All ports
4 kV, 5.0 kHz
IEC 60255-22-5
Surge immunity test:
IEC 61000-4-5
Common mode
Differential mode
1.0 kV, 1.2/50 s
0.5 kV, 1.2/50 s
IEC 61000-4-8
Immunity to conducted disturbance
induced by RF:
Continuous
Short duration ( 1 sec )
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
100 A/m
1000 A/m
IEC 60255-22-6, class III
Conducted radio frequency
interferene tests:
IEC 61000-4-6
10 V
f=150 KHz...80 Mhz
IEC 61000-4-9
Pulse magnetic field immunity tests:
1000 A/m, 6.4/16 s
10
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
Table 13. Electromagnetic compatibility tests, continued
Description
Type test value
Reference
IEC 60255-25
Emission tests:
EN 55011-CISPR II
Conducted
150 kHz-0.5 MHz
0.5 MHz-30 MHz
< 66 dB ( V/m)
< 60 dB ( V/m)
Radiated
30-230 MHz
230-1000 MHz
< 40 dB ( V/m)
< 47 dB ( V/m)
Table 14. Insulation tests
Description
Type test value
Dielectric test
Test voltage
IEC 60255-5
IEC 60255-27
2 kV, 50 Hz, 1 min
Impulse voltage test
Test voltage
IEC 60255-5
IEC 60255-27
5 kV, 1.2/50 s, 0.5 J
Insulation resistance test
Isolation resistance
Reference
IEC 60255-5
IEC 60255-27
> 100 M at 500 V DC
Table 15. Mechanical tests
Description
Type test value
Vibration tests
Reference
IEC 60255-21-1, class II
Response
10...150 Hz, 0.035 mm / 1.0 g,
1 sweep / axis
Endurance / Withstand
10...150 Hz, 2.0 g,
20 sweeps / axis
Shock tests
IEC 60255-21-2, class II
Response
10 g, 3 pulses in each direction
Endurance / Withstand
30 g, 3 pulses in each direction
Bump tests
IEC 60255-21-2, class II
20 g, 1000 bumps in each direction
ABB
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Feeder Protection
REF601
Product version: 2.0
Table 16. Product safety
Description
Type test value
LV directive
2006/95/IEC
Standard
EN 60255-27 (2005)
EN 60255-1 (2009)
Table 17. EMC compliance
Description
Type test value
EMC directive
2004/108/IEC
Standard
EN 50263 (2000)
EN 60255-26 (2007)
Table 18. RoHS compliance
Description
Complies with RoHS directive 2002/95/IEC
Table 19. Data communication (Optional)
Description
Type test value
Protocol
MODBUS RTU
Communication port
RS485, 2 wire
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
12
ABB
1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
17. Protection functions
Table 20. Low-set phase overcurrent protection, stage I> / 51
Parameter
Value (Range)
Setting range of pick-up current I >
0.2...1.0 x In in steps 0.025, infinite
Operation accuracy
Operate time delay (DMT) t >
0.1...1.6 sec in steps of 0.1 for B=1
5.0% of set value
0.5...8.0 sec in steps of 0.5 for B=5
Operation time accuracy
Operating curve type
5.0% of set value or 30 msec
IEC 60255-3:
Normal inverse, Very inverse, Extremely inverse, Long-time inverse
Special curves:
RI inverse
Time multiplier setting k
0.1...1.6, in steps of 0.1
Operation time accuracy
IEC characteristics
class E(5) or 30 msec
RI characteristics
Reset ratio
IDMT : 0.96 and DT : 0.98
5.0% of set value or 30 msec
Table 21. High-set phase overcurrent protection, stage I>> / 50-1
Parameter
Value (Range)
Setting range of pick-up current I >>
1.0...2.75 x In in steps 0.25, infinite
Operation accuracy
Operation mode
Definite time
Operate time delay (DMT) t >>
0.1...0.45 sec in steps of 0.05
Operation time accuracy
Reset ratio
0.98
5.0% of set value
5.0% of set value or 30 msec
Table 22. Very High-set phase overcurrent protection, stage I>>> / 50-2
Parameter
ABB
Value (Range)
Setting range of pick-up current I >>>
2.0...15.0 x In in steps 1.0, infinite
Operation accuracy
Operation mode
Instantaneous
Operate time t >>>
0.05 sec
Operation time accuracy
Reset ratio
0.98
5.0% of set value
15 msec
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Feeder Protection
REF601
Product version: 2.0
Table 23. Low-set earth-fault protection, stage Io > / 51N
Parameter
Value (Range)
Nominal value of earth current
1A
Measurement range
0.05...5 x In
Setting range of pick-up current Io >
External earth measurement : 0.05...0.1 x In in steps 0.05, infinite
Internal earth measurement : 0.2...1.0 x In in steps 0.05, infinite
Operation accuracy
External earth measurement : 5.0% of set value
Internal earth measurement :
Operate time delay (DMT) to >
15.0% of set value
0.1...1.6 sec in steps of 0.1 for B=1
0.5...8.0 sec in steps of 0.5 for B=5
Operation time accuracy
External earth measurement : 5.0% of set value or 30 msec
Internal earth measurement :
Operating curve type
10.0% of set value or 30 msec
IEC 60255-3:
Normal inverse, Very inverse, Extremely inverse, Long-time inverse
Special curves:
RI inverse
Time multiplier setting k
0.1...1.6, in steps of 0.1
Operation time accuracy
IEC characteristics
External earth measurement : class E(5) or 30 msec
RI characteristics
External earth measurement : class E(7.5) or 30 msec
IEC characteristics
Internal earth measurement :
RI characteristics
Internal earth measurement :
Reset ratio
IDMT : 0.96 and DT : 0.98
5.0% of set value or 30 msec
10.0% of set value or 30 msec
Table 24. High-set earth-fault protection, stage Io >> / 50N
Parameter
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
Value (Range)
Setting range of pick-up current Io >>
0.5...4.0 x In in steps 0.25, infinite
Operation accuracy
External earth measurement : 5.0% of set value
Internal earth measurement :
15.0% of set value
Operation mode
Definite time
Operate time delay (DMT) to >>
0.00...0.75 sec in steps of 0.05
Operation time accuracy
External earth measurement : 5.0% of set value or 30 msec
Internal earth measurement :
10.0% of set value or 30 msec
For setting 0.00 msec : 45 msec
Reset ratio
14
0.98
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
Table 25. Transformer inrush detector
Parameter
ABB
Value (Range)
Inrush threshold value
0.2...20 x In
Ratio Setting
30%...50%
15
1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
18. Dimensions and mounting
The REF601 have been equipped with in-built pressfit mechanism. Without using an additional mounting
accessories, the REF601 can be easily flush mounted on the panel.
With appropriate mounting accessories the REF601
can be mounted on the circuit breakers type VD4 /
HD4.
The panel cut-out for flush mouting:
Height : 151.5 1 mm
Width : 121.5 1 mm
Thickness of panel : 2.0 - 3.0 mm
102.0
130
4.0
151.5
160
2.5
85.5
3.0 (Max.)
Front
Left
121.5
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
Top
Figure 3. Dimension of REF601 - Flush mounting
16
ABB
1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
19. Selection and ordering data
The relay type and serial number label identifies the
protection relay. An order number label is placed on
the side of the relay. The order number consists of
a string of codes generated from the hardware and
software modules of the relay The serial number and
order number label is placed on side of relay.
Use the ordering key information in Fig. 4 to generate the order number when ordering complete
protection relays.
REF601 B A 4 2 6 B A 1 X E
#
Description
Relay type
REF601
REF601
2
Standard
IEC
CEI
3,4
Analog input / output
5,6
Binary input / output
A4
3 sensor and ground CT
26
2 BI + 6 BO
REF601 B A 4 2 6 B A 1 X E
#
Description
Serial communication
with RS485
None
Communication protocol
MODBUS RTU
None
Power supply
1
24...240V AC / DC
10
For future use
11
Version
Undefined
Product version 2.0
Example code: REF601 B A 4 2 6 B A 1 X E
Your ordering code:
Digit (#)
Code
8 9 10 11
Figure 4. Ordering key for complete relay
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Feeder Protection
REF601
Product version: 2.0
20. Accessories and ordering data
Table 26. Compatible sensors
Item
KEVCR for integrated circuit-breakers type VD4/HD4
Order number
KEVCR24OC2R0101, 630A
KEVCR24AC2R0102, 1250A
KECA for other applications where relay is panel mounted
KECA 250 B1 :
For more information please refer to the catalogue reference
1VL5400052V0101
- no. 1VLC000584.
Figure 5. Outline view of KEVCR sensor
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
Figure 6. Outline view of KECA sensor
18
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
21. Terminal diagram
REF601
XK5
DIFF
XK9
IL1
Uaux
XK6
XK7
DIFF
IL2
DIFF
IL3
1
2
3
4
XK2
XK8
1
2
Io (1A)
E/F
Trip
2
3
XK4
1
2
O/C
Trip
BI : Remote Trip
4
5
3
4
Unit
Ready
BI : Remote Reset
6
7
Bkr.
Close
(+)
Trip2 *
TCS
XK3
1
2
3
D+
DG
Communication
on Modbus RTU
Protocol (Optional)
9
10
XK10
1
Trip1 *
SHIELD
* Contact operates for 200 msec and resets
Figure 7. Terminal diagram of REF601
ABB
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1MDB07207-YN
Feeder Protection
REF601
Product version: 2.0
22. References
The www.abb.com/substationautomation portal
offers you information about the distribution automation product and service range.
You will find the latest relevant information on the
REF601 protection relay on the product page.
The download area on the right hand side of the
Web page contains the latest product
documentation, such as technical reference manual,
installation manual, operator manual, and so on. The
selection tool on the Web page helps you find the
documents by the document category and language.
The Features and Application tabs contain product
related information in a compact format.
23. Document revision history
Document revision/date
Product version
History
A/2009-03-20
1.0
First release
B/2009-08-21
1.0 SP
Content updated to correspond to
the service pack release
C/2010-09-30
1.0 SP2
Content updated to correspond to
the service pack release
D/2011-04-21
1.0 SP2
Content updated
E/2012-04-04
2.0
Content updated to correspond to
the product version
GUID-89A9F7DF-FB82-4E8D-B449-7C0BB51C1DCA V1 EN
20
ABB
www.abb.com/substationautomation
1MDB07207-YN E
ABB Ltd, Distribution Automation
Maneja Works
Vadodara-390013, India
Phone: +91 265 2604386
Fax:
+91 265 2638922
Copyright 2012 ABB. All rights reserved.
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