DRAW-OUT FAULT EVENT DI/DO

METERING
WITH SELF DISTURBANCE PROGRAMMABLE
PROTECTION
CT SHORTING RECORDER MATRIX

PMD Division
101_150_250_350 (V)
H I-TECH N EX SERIES

S.No. Description
1) Introduction ...........................................................
2) Features ................................................................
3) Application ............................................................
4) Hardware ..............................................................
5) Protection Features ..............................................
6) Functional Diagram ..............................................
7) Protection Functions .............................................
8) Fault Record .........................................................
9) Event Record ........................................................
10) Programmable Scheme Logic ..............................
11) Disturbance Record ..............................................
12) Human Machine Interface ....................................
13) Communication
13.1 Rear Communication ....................................
13.2 Front Communication ...................................
14) Setting Ranges .....................................................
15) Technical Data ......................................................
16) Specification Table OF Hi-Tech Relays ................
17) Recommended terminal lugs specification ...........
18) Standards .............................................................
19a) Connection Diagram for CSENEX-I 101/150/250...
19b) Connection Diagram for CSENEX-I 350.................
19c) Connection Diagram for REF Application...............
19d) Connection Diagram for Zero current
differential protection of star point winding.............
19e) Connection Diagram for Trip Circuit Supervision....
20) Draw out process of the relay ...............................
21) Dimensional Details (Vertical model) ....................
22) Mounting arrangement of the Relay ......................
23) Panel mounting of the Relay .................................
24) Ordering Information .............................................
25) Revision History ....................................................

Disclaimer
The information in this document is subject to change without any type of notice and should not be
construed as a commitment by C&S. C&S assumes no responsibility for any errors that may appear
in this document.

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1) Introduction

CSENEX Series offers a compact Multi-functional Over-current protection solution for Feeder, Generator, Motor &
Transformer segment.

CSENEX-I Family of protective relays are numeric relays that provides multi protection and monitoring with reliable
and fast protection solution in a single unit.

CSENEX-I series relays are an advanced feeder protection solution which has fast, sensitive and secure protection
for feeder internal & external faults.

CSENEX-I offers different model based features to cover the wide range of user.

2) Features

l 1A & 5A rated CT input (programmable)

l Draw out with self CT shorting
l DI/DO programmable matrix
l Protection blocking through DI
l Trip counter
l Two sets of setting groups *
l Fault recorder *
l Event recorder *
l Disturbance recording *
l Communication (Local & Remote)

3) Application

The CSENEX-I relays have been designed for controlling, protecting and monitoring industrial, utility distribution
networks and substations. They can also be used as part of a protection scheme for feeders, transformers and
generators.

* Model dependent
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4) Hardware

l Micro controller based numeric design

l Measures true RMS with DFT filter
l 4 Current analog inputs
l Max. 6 Digital Inputs *
l Max. 6 Digital Outputs*
l (16x2) Alpha-numeric LCD
l RS-485 & USB communication
l 1A & 5A site selectable
l Fixed / Programmable * LEDs for Pickup & fault annunciation
l Push button on the front for HMI
l CT Terminal with Self shorting

5) Protection Features

l Three phase time over current (51)

l Three phase instantaneous current (50)
l Earth time over-current (51N)
l Earth instantaneous over-current
l Restricted Earth Fault (64R) *
l Derived Earth Fault (50N) *
l Cold load (62 CLD)
l Harmonic blocking (50H)
l Thermal over load (49) *
l Auto Re-closer (79) *
l Current unbalance (46) / Negative Phase Sequence *

6) Supervision Functions

l Circuit breaker failure (50BF)

l Trip circuit supervision (74TC)
l Broken conductor (46BC) *

* Model dependent
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6) Functional Diagram

COMMUNICATION RECORDS

Max. 6 Digital Output *

Rear (RS-485) Fault Record
Modbus / IEC-103
Event Record
Max. 6 Digital Input *
Front USB Disturbance Record *
PC/Laptop

SMPS *
Circuit 50BF (80V-280V AC/90V-300V DC)
Breaker 74TC (18V-150V DC)

50 46 * 62
50BF
51 79 49 46* 64R*
BC CLD

Phase 3
current

50N/ * 64N
50BF 79 50H
51N 87G

Earth 1
current

* Based on Ordering Information

(Figure 1)

7) Protection Functions

Three Phase Over-current Protection (50/51)

The independent two stages are available for phase fault protection. For I> the user may independently select
definite time delay or inverse time delay with different type of curves. The second Hi-Set stage can be configured
with definite time only.

Earth Fault Protection (50N/51N)

The independent two stages are available for earth fault protection. For first stage (Ie>) the user can select definite
time delay or inverse time delay with different type of curves. The second Hi-Set stage can be configured with
definite time only.

* Model dependent
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Trip Circuit Supervision (74TC)

This feature continuously supervises trip circuit of both pre closing and post closing conditions in circuit breaker. It
detects tripping mechanism failure like circuit breakage contact degeneration in wires, contacts and coils.
Note: Trip counter is incremented on the basis of getting trip command from relay and not on the basis of external
mechanism (circuit breaker) operation.

Harmonic Blocking (50H)

Harmonic block detects high inrush current inflows that occurs upon connection of transformers or rotating
machines. The function will block the phase over-current and earth fault elements.

Circuit Breaker Failure Protection (50 BF)

The CB Failure Protection is based on supervision of phase and earth currents after tripping events. The test
criterion is whether all phase currents have dropped to less than 5% of In within tCBFP. If one or more of the phase
currents have not dropped to specified current within this time, CB failure is detected and the assigned output relay
is activated.

Reset Delay
This parameter introduces a delay in opening of relay contacts, when the current goes below the drop out value for
over current, short circuit, earth fault, earth high set etc. This parameter will not work when manual reset mode is
selected.

Auto Re-closer (79) *

As 80% of faults in overhead lines are transient, the use of the auto re-closer is very advantageous. Automatic auto-
recloser allows a substation to operate unattended. The number of visits on site to manually re-close a circuit
breaker after a fault, can then be substantially reduced. This feature gives an important advantage for substations
supervised remotely.

Typically this auto re-close (AR) sequence of Instantaneous Trip(s) and Re-close Delays (Dead times) followed by
Delayed Trip(s) provide the automatic optimum method of clearing all types of faults i.e. both Transient and
Permanent, as quickly as possible and helps in improving the up time of the network in service.

DI Inputs:
AR Blocking - To block the auto re-closer through remote DI CB Close DI - To get the circuit breaker status
CB Ready - To get the CB ready or to give the closing command

Configurable Outputs:
79 AR Close CB
79 Lockout

AR-Blocked
Unit changes immediately to "AR-blocked" status when an external AR Blocking DI is applied or internal EXIT is
chosen for AR cycle in MMI. No Auto re-closing is possible in "AR-blocked" status.

Activating of AR:
Prior to every AR it is possible to select which kind of tripping (I> or I>>, Ie> etc.) will lead to automatic re-closing. This
can be separately fixed for each protection.

Dead time (td):

Starts with the off signal of the circuit breaker. No closing command to the circuit breaker is given till expiry of
the set dead time.

NOTE: Trip Test is available in HMI to check all LEDs and Digital Output (Relay)

* Model dependent
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User programmable dead times are available for each protection trip operation.
The dead time is initiated when the trip output contact resets, the pickup is reset and the CB is open.

The CB close output relay is energized after the dead time has elapsed If CB ready input is present.

The dead time (dead time td1, dead time td2 dead time td3 dead time td4) starts when the feedback on 'CB CLOSE
DI' is not available.

Reclaim Time (tr)

This is the time during which after switching on or after AR a subsequent re-closing is prevented. If the number
of the set shots is reached, the relay is locked for this time after the last re-closing attempt. If CB Ready DI is
not available relay will not generate closing command.

If the circuit breaker dose not trip again, the auto re-close cycle resets to original STATE-1 at the end of the
reclaim time. If the protection operates during the reclaim time of the relay:

l either advances to the next AR cycle that is expected in next auto re-close state or
l if all the programmed re-closer attempts have been accomplished, it locks out.

The reclaim time is started with the automatic closing command.

Once a CB has re-closed and remained closed for a specified time period (the reclaim time), the AR sequence
is reinitialized and a successful close output issued. A single common reclaim time is used (Reclaim Timer).
when an auto re-close sequence does not result in a successful re-closure the relays goes to the lock out state.

Starting Condition for Auto Re-closer

1) AR should be enabled by manual setting.
2) AR blocked DI is not available
3) Respective protection AR cycle should not in exit condition.

Lock out State

Lockout state of the breaker means no further attempts to AR in these conditions

1) Lockout occurs when all auto re-closure attempts are over & protection operates during the final Reclaim
Time.

2) If CBFP failure appeared in relay (if CBFP enable).

3) At the end of the each reclaim timer if the CB is in the open position (Close DI is not present).

4) If a Close pulse of AR relay is given and the CB fails to close through close DI input or expiry of Trip
Contact Sense time.

5) If a open pulse given to CB and CB fails to open in between Trip Contact Sense time.

In any of these cases, Manual reset will be required to reinitiate the AR.

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2 3 4 5 6 7 8

Pickup

Trip Command
Starting of reclaim time End of reclaim time

CB Close Status

Dead Time Reclaim Time Reclaim Time

CB Ready

AR Cycle AR Cycle

Reclose Command

First Fault: AR State:1 : Successful Second Fault: AR State:1 : Successful

Auto Reclosure Logic States

(Figure 2)

Thermal Over load Protection (49) *

Thermal overload protection can be applied to prevent damages to the electrical plant equipment when operating at
temperatures in excess of the designed maximum withstand. A prolonged over loading causes excessive heating,
which may result in premature deterioration of the insulation or in extreme cases, insulation failure.

CSENEX-I relays incorporate a current based thermal replica, using load current to reproduce the heating and
cooling of the equipment to be protected. The element thermal overload protection can be set with both alarm and
trip stages.

The heating within any plant equipment, such as cables or transformers, is of resistive type
(I2R x t), thus the quantity of heat generated is directly proportional to current squared (I2). The thermal time
characteristics used in the relay is based on current squared, integrated over time.
The CSENEX-I relays automatically use the highest phase current as input information for the thermal model.

The thermal time characteristic is given by following formula:-

* Model dependent
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The formula for calculating the trip characteristics is as follows:

I2
- p2
Ib2
I2
Trip time (taus)=τ.In I2 for p2< ∩ p2≤ k2
-k2
(Ib2 )
Ib2

with τ = thermal time constant of the object to be protected.

lb= Basic current
IP= Initial load current
p= Initial load factor (p=0 means cold operating component)
k= constant
for thermal characteristics user has two choices
Thermal is based on highest measured RMS current

In CSENEX-I relay three modes are available for saving of thermal memory during power reset. These modes
are programmable.
M1: On Power Reset thermal memory becomes 0.
M2: On Power Reset thermal memory starts from the same value as at the time of Power Off.
M3: On Power Reset thermal memory subtracts for the time it is in Off state & starts from the remaining value.

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Cold Load Pickup (62 CLD)

This function aims to avoid non-desired trips in the following situation: after being the line de-energized for a period
of time and re-energized later, the load exceed the protection setting without the presence of a fault. This may be due
to the fact that the off period of all the loads (furnaces, heaters, coolers etc.) is elapse and they are all connected at
the same time, producing a strong inrush current in the line, but which can be supported within certain time. This
phenomenon can occur not only at the moment of the breaker manual closing, after having remained open for a
certain time, but also with the breaker permanently closed due to the operation of another upstream breaker.
What the function does, is detecting when those conditions are given and changing the tripping settings during a
programmable time.
The function is activated when the current in the 3 phases is below 0.05A, then the programmed time starts to run to
determine that the load is cold (this time can be 0, what means that any circuit breaker opening could lead to the cold
load situation). Once that time has expired and the current has not exceed again 0.08A, the protection usual setting
values are replaced by the cold load pickup ones (cold load group settings). When any of the phase current exceed
0.08A a counter with programmable time starts, during which the setting are the cold load pickup ones (cold load
group settings). When expiring this time, the settings are again the usual ones. For settings Refer Cold Load Pickup
Table in Setting Ranges.

Broken Conductor Protection (46BC) *

Majority of faults on a power system are shunt faults and induce appreciable current increase so easily detectable by
standard over current protection element.
Another type of unbalanced system condition is the series or open circuit fault. This fault can arise from broken
conductors, mal operation of single phase switchgear or the operation of fuses.
Series faults will not induce an increase in phase current on the system and hence are not easily detectable.
However on a lightly loaded line, the negative sequence current resulting from a series fault condition may be very
close to or less than the full load steady state unbalance arising from CT errors, load unbalance etc. a negative
sequence protection element therefore would not operate at low load levels.
CSENEX relays incorporate a protection element, which measures the ratio of negative to positive phase sequence
current (I2/I1). This protection element will be affected to a lesser extent than the measurement of negative sequence
current alone, since the ratio is approximately constant with variations in load current. Hence a more sensitive
setting may be achieved.

Self-supervision function
The relay’s 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 binary outputs.

* Model dependent
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Negative Phase Sequence Over current (46) *

This function protects against current unbalances resulting from anomalies in the power System or unbalanced
loads. Negative phase sequence over current element give greater sensitivity to resistive phase to phase faults,
where phase overcurrent element may not operate.

If I2 is Negative phase sequence current then

||| |
3Ÿ I2 = Ia+a ŸIb+aŸIc Where a=1 120
2 0

The Trip can be time delayed by a curve selectable by settings.

Refer following formula for the inverse characteristics of Negative Phase Sequence protection: -

Negative Phase Sequence Equation

t= K1
2
(l2/l2s) -1

K1 : TMS for Inverse characteristics of NPS

t : Expected Trip Time
I2 : Measured negative sequence value
I2s : Permissible NPS value

1000

100
t[s]
K1=
3600
2400
1800

1200
10

600

300

1
1 2 3 4 5 6 7 8 9 10
I2/I2s

Negative Phase Sequence Inverse Time Characteristics

* Model dependent
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Restricted Earth Protection (64R) *

The restricted earth fault relay is high impedance differential scheme which balances zero sequence
current flowing in the transformer neutral against zero sequence current flowing in the transformer phase
windings. Any unbalance for in-zone fault will result in ana increasing voltage on the CT and thus will
activate the Ref protection.
If REF is enabled then Restricted Earth Fault current is measured directly from CT terminals and Earth
fault is derived from three phase currents (3Io) .
This scheme is very sensitive and can than protect against low levels of fault current in resistance
grounded systems where the earthing impedance and the fault voltage limit the fault current.
Relay serves as a supplement for the generator differential protection. It allows for example
implementation of a zero current differential protection by integrating the star-point current. With the view
to its higher resistance to disturbance from outside the protection area. It can be set much more sensitivity
than the simple generator differential protection in order to prevent false tripping.
Generator Motor, Generator, Alternator
L1 L1

L2 L2

L3 L3

Rsr Rsr Rsr

Rsr

I> CSEZEN-F 100

Under this wiring / application over current

functions can be used as REF.
Zero current differential protection of the star point
winding (restricted earth fault 64REF) of a generator Highly stabilized differential current relay for
alternator, generators and motors
Derived Earth Over current (50N)
There is a provision of derived / calculated Earth fault protection in the relay; where relay measures the
zero sequence current from calculation of three phase vector summation.

Ie_d (3 Io)= ( I L1 + I L2 + I L3)

Derived calculated Earth fault protection starts from 10%.

The derived earth over current has two independent thresholds: Ie_d> and Ie_d>>.
REF / Earth Fault Protection availability

REF DIRECT (Analog) DIRECT (Analog) Calculated Derived

Protection measurement of measurement of Earth Fault (3 I0)
Earth Current REF Current from 3 Phase current

ENABLED NOT AVAILABLE AVAILABLE AVAILABLE

DISABLED AVAILABLE NOT AVAILABLE AVAILABLE

* Model dependent
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8) Fault Record (based on ordering information of model)

CSENEX-I records last 20 faults in its non volatile memory with it's Date & time stamp. Each record has the following
information:
Fault Format
[F] IL1 : 00.00A
[F] IL2 : 00.00A
[F] IL3 : 00.00A
[F] Ie : 00.00A
HOUR MIN : HH:MM
SEC mSEC : Sec:mSec
DATE : DD:MM:YY
F-TYPE :
FAULT TYPE
Where
[F][ILx] Magnitude of phase current's.
[F]Ie Magnitude earth fault current's
F-Type Origin of fault (over current etc). (See Figure 3)
whenever the available memory space is exhausted the new fault automatically over writes the oldest fault. When the
relay trips the description of fault in the feeder will appears on the LCD screen automatically and by pressing i key one
can easily get all the detailed information of that fault.
The user can view the fault record either via front USB interface software or remotely via the RS-485 communication.

(Figure 3) (Fault Data Recording on PC software)

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9) Event Record (based on ordering information of model)

The unit stores in non volatile memory the last 100 events records. When the available memory space is exhausted,
the new event automatically overwrites the oldest event which can be retrieved from a PC, with the following format:
EVENT : EVENT NUMBER
HOUR : HH:MM
SEC mSEC : SEC:mSEC
DATE : DD/MM/YY
l Date and time of the event
l Descriptive text of the even
The user can view event records via the front USB interface software (See Figure 4)
* Description of event number available in event list or in front end software, Pickup & Trip events are recorded.

(Figure 4) (Event Data Recording on PC Software)

Output Contacts
No. of digital outputs : 06 Nos. (configurable)
Type of outputs : Relay
Programmable (DO Assignment) : Yes
Relay reset type : Programmable (Auto/Manual)

Input Contacts
No of digital inputs : 06 Nos. (configurable)
Programmable (DI Assignment) : Yes

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10) Programmable Scheme Logic (based on ordering information of model)

Programmable scheme logic is configured using the front end interface PLC Editor. This interface uses Boolean
equations. Flexible logic allows user to create logic diagram to be assigned digital output.
The designed logic is event driven to ensure that protection is not delayed.
The following figure describes the use of protection schemes using the over current pickup & under voltage
pickup from downstream relays to block operation of upstream relays using a digital output.

(Figure 5)

* Model dependent
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11) Disturbance Record (based on ordering information of model)

The relay has an oscillograph data recorder with the following characteristics:
u Oscilloscopic recording can trigger on Pickup or on trip or via DI i.e. change from pre-fault to post-fault
stage. It is programmable.
u Each record comprises the samples from 4 analog signals and the status of 6 digital inputs and 6 digital
outputs. There will be 30 samples per cycle.
u Relay saves maximum 1200 cycles, and the number of cycles per record is programmable (for example: if
40 cycles are selected, then there will be maximum 30 records of 40 cycles each).
u The pre-fault and post-fault cycles are programmable of oscilloscope (disturbance) record setting).
u Records are in the non volatile memory.
u The records are transferred to PC using USB interface. The data is graphically displayed & can be taken on
printer.
u Record 1 is always latest record. 2nd record is older than 1st...... and so on.
u Disturbance record in comtrade format as per IEC60255-24.

(Figure 6) (Disturbance Recording on PC software)

* Model dependent
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12) Human Machine Interface

It comprises of bright LCD display

l Four push switches for setting values of normal tripping characteristics and other operations
for local access (model dependent).
l One RESET push switch.
l LEDs for pickup or tripping on fault and event in any phase (model dependent).

HI TECH SERIES

CSEN
EX-I 15
0-S-I4
-D4-W
-O-V
S.NO
. : 2101
40521S
2

HI T
EC H SER
IES

Model name, S.No. Insertion sticker (Figure 7)

(based on model)

Keys Manual Key

is used as intelligent key to see the details of last fault and Relay status.

is used to reach directly to the HOME screen.

is used to set the status.

is used to reset the fault status.

is used to scroll in upward direction.

is used to scroll in downward direction.

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13) Communication (Local and Remote)

The unit has:

l 1 Front USB port for direct connection to a PC
l 1 Rear RS-485 communication port

13.1) Rear Communication

The protocol for the rear port is MODBUS-RTU.

13.2) Front Communication

The entire setting, Fault & Event are available on 'A' type USB (female) interface with CSE LIVELINK with saving
& printing option. This unit also has Front-end Live Link simulation support for testing of relay even without any
three phase injection source.

HI TECH SERIES HI TECH SERIES

CSENEX CSENEX
-I 150- -I 150-
S-I4-D4-W S-I4-D4-W
-O-V -O-V
S.NO S.NO
. : 2101 . : 2101
40521S2 40521S2

HI T HI T
EC H EC H
SER SER
IES IES

Terminals
1 1
A/+
System 2 2 B/-
3 3 GND
GND GND

RS-485 Rear RS-485 Rear Ext Wire loop to

screened terminals screened terminals include line
twisted pair twisted pair terminating res

Communication to multiple devices from control system using RS-485

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14) Setting Ranges

Phase Over Current Protection (50P/51P)

S.No Parameter Display Setting Range Step Default

Min Max Size Setting
1 Phase characteristics PCurve DEFT/EINV/VINV//LINV/NINV1.3/NINV3.0/NINV0.6 DEFT
2 Phase over-current
low set pickup setting -1 l> 0.05xIp 4.00xIp 0.01xIp Disable
3 Phase over-current
definite timing-1 t> 000.10s 150.00s 000.01s 000.10s
4 Phase over-current
inverse timing-1 ti> 00.01 15.00 00.01 00.10
5 Phase over-current
hi-set pickup setting-2 l>> 00.05xIp 30.00xIp 00.01xIp Disable
6 Phase over-current
hi-set definite timing-2 t>> 00.0s 20.00s 00.01s 00.10s

13.5
Very Inverse t= ti [s]
(I / IS) – 1

80
Extremely Inverse t= ti [s]
(I / IS) 2 - 1
120
Long time Inverse t= ti [s]
(I / IS) – 1
0.14/0.061/0.028
Normal Inverse 3.0/1.3 /0.6 t= ti [s]
(I / IS)0.02 – 1

Where t = Tripping time ti=Time multiplier

I = Fault current IS=Setting value of current

For Current Range 0.2 to 20xIn:

Trip timing Accuracy : VINV / NINV 3.0 / 1.3 / DEFT : +5% OR +40mSec (whichever is higher)
EINV / NINV 0.6 / LINV : +7.5% OR +40mSec (whichever is higher)
For Current Range 0.05 to 0.2xIn:
Trip timing Accuracy : VINV / NINV 3.0 / 1.3 / DEFT : +20% OR +40mSec (whichever is higher)
EINV / NINV 0.6 / LINV : +20% OR +40mSec (whichever is higher)

Earth Setting (50N/51N) for CSENEX-I 101/150/250 (Availability as per model selection)

S.No Parameter Display Setting Range Step Default

Min Max Size Setting
1 Earth over-current
low set pickup setting le> 0.05xIn 2.50xIn 0.01xIn Disable
2 Earth Characteristics ECurve DEFT/EINV/VINV/LINV/NINV1.3/NINV3.0/NINV0.6 DEFT
3 Earth over-current
low set definite timing te> 0.03s 150.00sc 000.01s 000.10s
4 Earth over-current
low set inverse timing tie> 0.01 15.00 00.01 00.10
5 Earth over-current
hi-set pickup setting Ie>> 0.05xIn 20.00xIn 00.01xIn Disable
6 Earth over-current
hi-set definite timing te>> 00.0s 20.00s 00.01s 00.10s

* Model dependent
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Earth Fault Setting (50N/51N) for CSENEX-I 350 (Availability as per model selection)

Parameters Display Setting Range Step Default

Min Max Size Setting

Earth pickup setting (1) Ie> 0.05xIn 2.5xIn 0.01xIn 0.5xIn

Earth characteristic E-CURVE DEFT EINV,VINV,LIINV,NINV1.3,

NINV3.0, NINV0.6 - DEFT

Earth inverse timing tie> 0.010 1.500 0.005 0.050
Earth definite timing te> 000.03sec 150.00sec 000.01sec 000.10sec
Earth hi-set pickup setting(2) le>> 0.05xIn 20.00xIn 0.01xIn 0.8xIn
Earth hi-set definite timing te>> 00.02sec 20.00sec 00.01sec 00.10sec
Derived Earth current function Ie_d> Function Disable Enable - Disable
Derived Earth current Pickup Ie_d> Pickup 00.10xIn 15.00xIn 00.01xIn 01.00xIn
Derived Earth current Def. time Ie_d> Deft Time 00.02sec 100.00sec 00.01sec 00.10sec
Derived Earth current Hi-set Ie_d>> Function Disable Enable - Disable
Derived Earth current Hi-set Pkup Ie_d>> Pickup 00.10xIn 15.00xIn 00.01xIn 01.00xIn
Derived Earth Hi-set Def. time Ie_d>> Deft Time 00.02sec 100.00sec 00.01sec 00.10sec

Cold Load Protection (62 CLD)

S. Parameter Display Setting Range Step Default

No Min. Max. Size Setting
1 Phase characteristics P-Char DEFT/EINV/VINV DEFT
------ ------ /LINV/NINV1.3/
NINV3.0/NINV0.6
2 Earth Characteristics E-Char ------ ------ DEFT/EINV/VINV DEFT
/LINV/NINV1.3/
NINV3.0/NINV0.6
3 Ph. over-current low set pickup setting - Stage-1 I> 0.05xIp 4xIp 0.01xIp EXIT
Ph. over-current definite timing - Stage-1 t> 0.05 Sec 150 Sec 0.01Sec 0.10 Sec
Ph. over-current inverse timing - Stage-1 ti> 0.01 1.50 0.005 0.05
4 Ph. over-current hi-set pickup setting - Stage-2 l>> 0.05xIp 30xIp 0.01xIp EXIT
Ph. over-current hi-set definite timing - Stage-2 t>> 0.02 Sec 20 Sec 0.01Sec 0.10 Sec
5 Earth over-current low set pickup setting-Stage-1 le> 0.05xIn 2.5xIn 0.01xIn EXIT
Earth over-current low set definite timing-Stage-1 te> 0.03 Sec 150 Sec 0.01Sec 0.10 Sec
Earth over-current low set inverse timing-Stage-1 tie> 0.01 1.50 0.005 0.05
6 Earth over-current hi-set pickup setting-Stage-2 Ie>> 0.05xIn 15xIn 0.01xIn EXIT
Earth over-current hi-set definite timing-Stage-2 te>> 0.02 Sec 20 Sec 0.01 Sec 0.10 Sec
7 Cold Load Pickup CLP PKUP Enable Disable ------- Disable
8 Cold Load Time tcold 0.00s 100.00s ------- 0.10s

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Active Group Setting (Availability as per Model selection)

S.No. Parameters Display Setting Range Step Default

Min Max Size Setting

1 Active Group ACTIVE GROUP1 GROUP2 - GROUP1

Circuit Breaker Failure Protection (50BF)

S.No. Parameter Display Setting Range Step Default

Min. Max. Size Setting
1 CBFP t_CBFP 0.03 Sec 2 Sec 0.01 EXIT

Broken Conductor Protection Setting (46BC) (Availability as per Model selection)

Parameters Display Setting Range Step Size Default
Min Max Setting

Enable broken conductor Enable NO YES ----- NO

NPS to PPS Ratio I2/I1 Ratio 0.10 0.50 0.01 Disable
Definite Time for (BC)Deft 0.0sec 20.00sec 0.01sec 0.10sec
broken conductor fault Time

Trip Circuit Supervision Protection (74TC)

S.No. Parameter Display Setting Range Step Default
Min. Max. Size Setting
1 TCS td 0.03s 2.00s 0.01s Disable

Thermal Over load (49) (Availability as per Model selection)

S.No. Parameters Display Setting Range Step Size Default

Min Max Setting

1 Thermal memory MemMod M1 M3 1.0 M1

2 Permissible basic current Ib 0.20xIp 4.00xIp 0.02xIp Disable
3 Constant k 0.50 2.00 0.01 1.00
4 Heating time constant Th 000.5min 180.0min 000.1min 000.5min
5 Cooling constant Tc 1.00xTh 8.00xTh 0.01xTh 1.00xTh
6 Thermal alarm Alrm_R 20% 99% 1% 20%
7 Thermal reset TH_Rst 1% 99% 1% 70%

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Current Unbalance / Negative Phase Sequence Setting (46) (Availability as per Model selection)
S.No. Parameter Display Setting Range Step Default
Min. Max. Size Setting
1 Enable NPS Enable NO YES ----- YES
2 NPS characteristics Char DEFT NPS-INV ----- DEFT
3 Pick up current lb 0.10xIp 2.5xIp 0.01xIp 0.10xIp
4 Time multiple K1 5.0 600 1.0 5 Sec
5 Definite time td 0.10 600 0.10 0.20 Sec

Negative Phase Sequence Equation

K1
t=
(I2 / Ib)2 –1
Where I2 is injected NPS current.
Trip timing accuracy : +7.5% OR +40mSec (whichever is higher)

Auto Re-closer Mode (79) (Availability as per Model selection)

S.No. Parameter Display Setting Range Step Default
Min. Max. Size Setting
1 Enable Auto-recloser Enable YES NO ------- NO
2 Dead time 1 D1 000.20s 300.00s 0.01s 0.20s
3 Dead time 2 D2 000.20s 300.00s 0.01s 0.20s
4 Dead time 3 D3 000.20s 300.00s 0.01s 0.20s
5 Dead time 4 D4 000.20s 300.00s 0.01s 0.20s
6 Reclaim time tR 000.20s 300.00s 0.01s 0.20s
7 Phase over-current low set max AR cycle Cyc l> 2 4 1 2
8 Phase over-current hi-set max AR cycle Cyc l>> 2 4 1 2
9 Earth over-current low set max AR cycle Cyc le> 2 4 1 2
10 Earth over-current hi-set max AR cycle Cyc le>> 2 4 1 2
11 Trip sense time t_TST 0.05s 2.00s 0.01s 0.05s

Restricted Earth Fault Protection (64R) (Availability as per Model selection)

Parameters Display Setting Range Step Default
Min Max Size Setting

REF pickup current Iref> 0.2xIn 30xIn 0.01xIn Disable

REFtrip time tref> 0 Sec 10 Sec 0.01Sec 1.0 Sec

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DO Assignment for CSENEX-I 101/150/250 (Availability as per Model selection)

Parameter Display
Phase over-current low set-1 I>
Phase over-current hi set-2 I>>
Earth over-current low set-1 Ie>
Earth over-current hi set-1 Ie>>
Trip circuit supervision TCS
Circuit Breaker Failure Supervision CBFP
Negative Phase Sequence* NPS
Broken Conductor* BC
Self Supervision SELF SUP
Thermal Alarm* Thrm-Alrm
Thermal Relay* Thm-Relay

DO Assignment for CSENEX-I 350 (Availability as per Model selection)

Over current alarm aI> Auto re-close AR CLS

Over current trip tI> Auto re-close lockout Arlock
Short circuit stage alarm aI>> Trip circuit supervision TCS
Short circuit stage trip tI>> Circuit breaker failure protection CBFP
Earth protection alarm aIe> Self supervision SLF SU
Earth protection trip tIe> Under current protection alarm aI<
Earth high protection alarm aIe>> Under current protection trip tI<
Earth high protection trip tIe>> Broken conductor protection alarm aBC>
Restricted Earth Fault alarm aREF Broken conductor protection trip tBC>
Restricted Earth Fault trip tREF Remote trip-1 RmtTp1
Derived Earth Fault Stage-1 Alarm aDE1 Remote trip-2 RmtTp2
Derived Earth Fault Stage-1 Trip tDE1 Remote trip-3 RmtTp3
Derived Earth Fault Stage-2 Alarm aDE2 Remote trip-4 RmtTp4
Derived Earth Fault Stage-2 Trip tDE2 Remote trip-5 RmtTp5
Negative phase sequence protection alarm aI2> Remote trip-6 RmtTp6
Negative phase sequence protection trip tI2> DO Block DOBlk
Thermal alarm TH Alm
Thermal relay TH trp

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DI Assignment for CSENEX-I 101/150/250 (Availability as per Model selection)

Parameter Display
CB Close CB Cls
CB Open CB Opn
Remote Reset RMT Rt
Phase Over current Lo-set Blocking I> BLK
Phase Over current Hi-set Blocking I>> BK
Earth Over current Lo-set Blocking E> BLK
Earth Over current Hi-set Blocking E>> BK
Broken Conductor Blocking* BCblk
NPS Blocking* NPSBLK
Thermal Blocking* Th BLK

DI Assignment for CSENEX-I 350 (Availability as per Model selection)

Circuit breaker close CB Cls Short circuit stage1 block I>> BK

Circuit breaker open CB Opn Earth block E> BLK
CB Ready CB Rdy Earth high block E>> BK
Remote trip-1 RmtTp1 Auto re-close block AR BLK
Remote trip-2 RmtTp2 Thermal block Th BLK
Remote trip-3 RmtTp3 Cold load pickup block CldBLK
Remote trip-4 RmtTp4 Restricted earth fault block REF>BK
Remote trip-5 RmtTp5 Derived Earth Fault Stage-1 Block DRV1BK
Remote trip-6 RmtTp6 Derived Earth Fault Stage-2 Block DRV2BK
Group toggle GRP tog Under current block I<BLK
Remote reset RmtRst Negative phase sequence block I2> BLK
Oscillator trigger OSC Tg Broken conductor block BC BLK
Over current block I> BLK

Disturbance Record (Availability as per Model selection)

Parameters Display Setting Range Step Size Default

Min Max Setting
Oscilloscope record RECORD NO YES - NO
Pre-fault cycle PRE CYCLE 002C 298C 1C 002C
Post-fault cycle POST CYCL 002C 298C 1C 002C
Triggering mode TRIG MODE PK-UP PK-UP/TRIP/Anyone - PK-UP

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Erase Record (Availability as per Model selection)

S.No. Parameter Display Setting Range Default

Min. Max. Setting
1 Trip Count Record Trip_Cntr NO YES NO
2 Thermal Reset ThrmLRset NO YES NO
3 Event Erase Record EventsErase NO YES NO
4 Fault Erase Record FaultsErase NO YES NO
5 Osc. Record Erase OscRcrdEras NO YES NO

Common Setting

S.No. Parameter Display Setting Range Step Default

Min. Max. Size Setting
1 Rated Phase Current Ip 1.00A 5.00A ----- 1.00A
2 Rated Earth Current In 1.00A 5.00A ----- 1.00A
3 Phase CT Ratio Ph CTR 0001 9999 1 1
4 Earth CT Ratio E CTR 0001 9999 1 1
5 Fault Popup FStat Enable Disable ----- Disable
6 Reset Delay ResetDly 0sec 20sec 0.1sec 0sec
7 Event Write EvntWrt Disable Enable ----- Disable

USB Communication

Protocol CSE proprietary protocol: available with front software

Baud rate 19200 bps
Cable required for interface USB cable type (A to A)

Rear Port (RS-485) Communication

Protocol MODBUS RTU, IEC-60870-5-103

Baud rate selection (programmable) 9600 / 19200 / 38400 bps
Parity selection (programmable) Even / Odd / None
Stop bit 1 Bit
Data bit 8 Bit data
Remote Address (programmable) (1 to 247)
Cable required for interface Two wire twisted shielded cable

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Auxiliary Supply (Availability as per Model selection)

Auxiliary Voltage Range For H Model 80V-280V AC / 90V-300V DC

For W Model 18V-150V DC
Power Consumption Quiescent approx. 3W
Operating approx. <7W
Rated Supply for For W Model 18V-150V DC (Active)
Digital Input <10V DC (Inactive)
For H Model 40V-280V AC (Active)
40V-300V DC (Active)
<25V AC/DC (Inactive)

15) Technical Data

Trip Contact Rating

Contact Rating
Contact relay Dry contact Ag Ni
Make current Max. 30A & carry for 3S
Carry capacity 8A continuous : Trip contact (DO-1 & DO-5)
5A continuous : Alarm contact (DO-2, DO-3, DO-4, DO-6)
Rated voltage 250V AC/ 30V DC
DC Current carrying capacity 8A@30VDC / 0.3A@110VDC/ 0.2A@220VDC
Breaking Characteristics
Breaking capacity AC 1500VA resistive
1500VA inductive (PF=0.5)
220V AC, 5A (cosØ <=0.6)
Breaking capacity DC 135V DC, 0.3A (L/R=30ms)
250V DC, 50W resistive or
25W inductive (L/R=40ms)
Operation time <10ms
Durability
Loaded contact 10,000 operation minimum
Unloaded contact 30,000 operation minimum

Over-voltage category : II, Insulation voltage : 300V, Pollution Degree : 2, IP-54 from Front

Measuring Input
Rated Data Rated current Ip :1A or 5A
Rated frequency Fn : 50 Hz
Drop out to Pickup Ratio >96%
Power consumption At Ip=1A 0.2 VA
in current circuit At Ip=5A 0.4 VA
Reset time 30mSec
Thermal withstand capability Dynamic current withstand
in current circuit (half wave): 250 x Ip
for 1 Sec : 100 x Ip
for 10 Sec : 30 x Ip
continuously : 4 x Ip

* Model dependent
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16) Specification Table of HI-TECH (CSENEX-I) Relays

TABLE-A
Function ANSI Model 101 Model 150 Model 250 Model 350
PROTECTIONS
CT inputs -- 4 4 4 4
Setting Group -- 1 2 2 2
Over current 50/51 ü ü ü ü
Earth Fault 50N/51N ü ü ü ü
Restricted Earth Fault 64R - - - ü
Derived Earth Fault 50N - - - ü
CBFP 50BF ü ü ü ü
Trip Circuit 74TC ü ü ü ü
Harmonic Blocking 50H ü ü ü ü
Cold Load Pickup 62 CLD ü ü ü ü
Thermal Over-load 49 - - ü ü
Current unbalance / NPS 46 - ü ü ü
Broken conductor 46BC - ü ü ü
Auto Re-closer 79 - - - ü
Programmable Scheme Logic [PLC] - - - ü
RECORDS
Fault Record -- 10 10 10 20
Event Record -- 50 50 100 100
Disturbance Record -- - - ü ü
DISPLAY
LCD Display -- 16x2 16x2 16x2 16x2
LED (Programmable/Fixed) -- Fixed Fixed Fixed Programmable
COMMUNICATION
Front Communication (USB) -- ü ü ü ü

Rear Communication (RS-485) –    

 : Ordering based
- : Not available in this model
ü : Available in this model
17) Recommended Terminal Lugs Specifications

Term Blocks Type/Cable Specifications

Current Inputs Ring Type lug / 2.5mm2 or 4 mm2 control cable

Auxiliary Supply Pin Type lug / 1.5 mm2 / 2.5 mm2 control cable

Rear Comm. Port Pin Type lug / 1.5 mm2 / 2.5 mm2 control cable

Front Comm. Port USB, Type A - A

Binary Input Pin Type lug / 1.5mm2 / 2.5mm2 control cable

Binary Output Pin Type lug / 4.0mm2 control cable

Earth Connections Ring Type / 2.5mm2 or 4 mm2 contact cable

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18) Standards

Type Test

F1 Functional Tests Internal Design Performance in line with Specification & Standards
Pickup / Drop down / Power consumption in Current /
Specifications & Voltage / Aux. Supply / Trip timing accuracy: OC /
IEC60255-151:2009 NPS / Thermal / Zero Sequence

Climatic Test

C1 Temperature Dry Cold IEC 60068-2-1 -20 deg C, 96 hours

(Relay operational)
C2 Temperature Dry Cold IEC 60068-2-1 -25 deg C, 96 hours
Transportation & Storage
C3 Temperature Dry Heat IEC 60068-2-2 55 deg C, 96 hours
(Relay operational)
C4 Temperature Dry Heat IEC 60068-2-2 70 deg C, 96 hours
Transportation & Storage
C5 Damp Heat Test IEC 60068-2-30 95% @ +55 / +25 deg C, 6 cycle (12hr + 12hr each)
(Relay operational)

Enclosure

C6 Enclosure IEC 529 Front IP54 (Dust 5x + Water x4)

Mechanical Test

Relay Operational

M1 Vibration response / IEC 60068-2-6 Class I

Endurance test Vibration response (Relay operational)
10Hz~150 Hz - peak displacement 0.035 mm below
58/60 Hz, 0.5 g above, 1 sweep cycle in each axis
Vibration endurance (Relay de-energised)
10 Hz~150 Hz 1g, 20 sweep cycles in each axis
M2 Shock Response / IEC 60255-2-27 Class I
Withstand Test Shock response (Relay operational) 5g 11mS
3 pulse in each axis
Shock withstand (Relay de-energised) 15g 11mS
3 pulses in each axis
M3 Bump Test IEC 60255-21-1 Bump (Relay de-energised) 10g 16mS
1000 pulses in each axis
M4 Seismic Test IEC 60255-21-3 Class I
Method A single axis sine sweep
1 Hz~35 Hz–below 8/9 Hz 3.5 mm peak
displacement horizontal axis, 1.5 mm vertical axis
above 8/9 Hz 1g horizontal, 0.5 g vertical
1 sweep cycle in each axis

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Electrical Test

E1 Insulation Resistance IEC 60255-27:2013 500V DC, 5 sec between all terminals & case
>100MΩ earth, between terminals of independent circuits
including contact circuits and across open contacts

E2 DC & AC Supply Voltage IEC 60255-26 Voltage range, upper & lower limit continuous
(Relay operational) withstand, ramp up & down over 1 minute

E3 Voltage Dips, Short IEC 60255-26 3 Dips & 3 Interruptions at 10 sec intervals
Interruptions & Voltage of duration between 10mS and 500mS at zero
variations immunity crossings & at other points on wave
(Relay operational) Variation: 100% to 40% over 2s, hold for 1s,
return to 100% over 2s

E4 Ripple in DC supply IEC 60255-26 12% AC ripple

(Relay operational)

E5 Dielectric Test
(Relay de-energised) IEC 60255-27:2013 2.0 KV @ 1min All circuit to Earth / Between IP & OP
No breakdown or
flash over
Test voltage 45~65 Hz
sinusoidal
or with DC voltage
at 1.4x the stated
AC values

E6 High Voltage Impulse IEC 60255-27:2013 5 kV peak 1.2/50uS, 0.5 J-3 positive,
(Relay de-energised) 3 negative between all terminals to case
earth between independent circuits

E7 VT Input Thermal Withstand 1.5xVn, continuous

E8 CT Input Thermal Withstand 250xIn half wave

100xIn for 1 second
30xIn for 10 second
4xIn continuously

E9 Contact performance & IEC 60255-1:2009

endurance tests

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Electro-magnetic Compatibility

R1 Electrical fast Transient/Burst IEC 60255-26 : 2013 Class IV- +4.0 kV All Circuits.
(Relay operational) IEC 61000-4-4 Pulse 5 / 50nsec / Duration 15msec /
Period:300msec/Pulse Freq: 5KHz / 2KV at I/O

R2 HF Disturbance Test IEC 60255-22-1 : 2007 Class III

(Oscillatory Waves) Longitudinal 2.5 kV peak, 2sec between
1 MHZ Burst independent circuits & case earth
(Relay operational)

R3 Electrostatic Discharge IEC 60255-26 : 2013 Class III

(Relay operational ) IEC 61000-4-2 8kV air discharge, 6KV contact
No of Discharge : 10
both polarities at 1 sec intervals

R4 Conducted Disturbance CISPR-11 : 2015 0.15 to 80 MHZ (Level-3)

RF fields IEC 60255-26 : 2013 Severity Level 10V RMS
(Relay operational) + sweeps 0.05-0.15 MHZ & 80-100 MHZ

R5 Radiated RF E-M field CISPR-22 : 2008 Class III Test method A

immunity test IEC 60255-26 : 2013 + sweep 80-1000 MHZ
(Relay operational) or IEC 1000-4-3 80-1000 MHZ
severity 10 V/m 80% modulated 1 kHz

R6 Surge Immunity capacitively Latest: IEC 60255-26:2013 Short circuit combination wave generator
coupled 1.2 uS/50 uS open circuit
(Relay operational) repetition rate 1 per minute
Power supply, CT & VT circuits –
4kV common mode 2 Ohm source
2kV differential mode 12 Ohm source

R7 Power Frequency IEC 61000-4-8 : 2009 100 A/m for 1 minute

Magnetic Field in each of 3 axes
(Relay operational)

R8 Conducted & Radiated RF IEC 60255-26 CISPR-11 / Class A

Interference Emission
(Relay operational)

R9 Power Frequency, IEC 1000-4-16 DC to 150 kHz Test Level 4

conducted common mode IEC 60255-22-7 300V at 16 2/3 Hz and 50 Hz

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19a) Connection Diagram for CSENEX-I 101 / 150 / 250

B4 B2
Earth
L1 L2 L3
+ -
NC
A23
C
D0 1 A24
NO
A22
P1 S1 B11 1A Power Supply
NC
B12 COM A19
P2 S2 D0 2 C
A20

* CT - 1 Amp Analog Input

NO
P1 S1 B15 1A
A21

* Digital Output
B16 COM NO
A17
P2 S2 D0 3 C
A18
P1 S1 B19 1A
NO
COM A15
B20 D0 4 C
P2 S2 A16

B23 1A
B24 COM D0 5 NO
A3

D0 6 NO
A1
A2 Com

P1 S1 B9 5A
B10 COM
P2 S2 A13
DI 1
* CT - 5 Amp Analog Input

A14
B13 5A
B14 COM A11
DI 2
P2 S2 A12
P1 S1 B17 5A A9
* Digital Input

DI 3
B18 COM A10
P2 S2
A7
5A DI 4
B21 A8
B22 COM
A6
DI 5

A4
B5 DI 6
* +
RS-485 A5 Com
B7 -

(Figure 8)

Digital Input availability as per Model Selection Digital Output availability as per Model Selection
DI 2 : DI 1 to DI 2 available DO 4 : DO 1 to DO 4 available
DI 4 : DI 1 to DI 4 available DO 6 : DO 1 to DO 6 available
DI 6 : DI 1 to DI 6 available

* Availability of DI / DO / Analog Input / Com Terminal based on model selection

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19b) Connection Diagram for CSENEX-I 350

B24 B23
Earth
L1 L2 L3
+ -

NO
A22
C
D0 1 A21
NC
Power Supply A20
P1 S1 B13 1A NO
A19
B14 COM IL1 D0 2 C
A18
P2 S2

* CT - 1 Amp Analog Input

B9 1A NO

* Digital Output
A17
B10 COM IL2 D0 3 C
P2 S2 A16

P1 S1 B5 1A NO A15
IL3 D0 4 C
B6 COM A14
P2 S2
NO
B1 1A A13
* D0 5 C
COM IE /REF A12
B2
NO A11
D0 6 C
A10

P1 S1 B15 5A
COM IL1 B17
B16 DI 1
P2 S2
* CT - 5 Amp Analog Input

B11 5A B19
DI 2
B12 COM IL2
B18 Com
P2 S2

P1 S1 B7 5A B20
* Digital Input

DI 3
B8 COM IL3
P2 S2
B22
DI 4
B3 5A
* B21 Com
B4 COM IE /REF
A1
DI 5

A3
DI 6
A23 +
**
RS-485 A2 Com
A24 -

(Figure 9)

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19c) Connection Diagram for REF Application for CSENEX-I 350

x
x
x

B13/B15
B14/B16 IL1
P1 S1

B9/B11
P2 S2 B10/B12 IL2

B5/B7
B6/B8 IL3

RSTAB
B1/B3
B2/B4 E/F Input

(Figure 10)

19d) CT Connection Diagram [3 OC + EF ] for CSENEX-I 350

L1
L2
L3

P1 S1 B13/B15 5A

B14/B16 IL1
P2 S2 COM
S1 5A
P1 B9/B11

B10/B12 IL2
P2 S2 COM

P1 S1 B5/B7 5A

B6/B8 IL3
P2 S2 COM
B1/B3
5A
B2/B4 IE

(Figure 11)

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19e) Trip Circuit Supervision Diagram

Trip Circuit

(+)
Target Indicator
(Hand Reset Type)
DI-1
B18

B17
D

DI-2 >1 1 0 t

B18
td
B19

52a 52b

CB Coil

(-)

(Trip Circuit Supervision Function)

(Figure 12)

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20) Draw-out process of the Relay

User(s) are advised to lift both the locking knobs

locking gently one by one to open the front cover as shown
knobs in the left picture.

and then Slide right the front cover towards front side

mounting Now unscrew all the 4 screws placed at the 4 corners

screw of the relay, by using the appropriate screw driver
positions gently, extra force may cause the damage in the relay.
(blue circled)

Hold the Eject handle, as shown in the left picture.

Twist the eject handle as shown in the picture and
then bring out the relay from the enclosure by
using the eject handle.

NOTE : Photos shown here are for general idea of draw out process
and can be change in future without prior information.

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21) Dimensional Details (Vertical Model) All the Dimension are in mm (Gen Tol.: +1mm)

The Hi-Tech NEX Series Relay has been equipped with in-built press-fit mechanism. Without using any
additional mounting accessories, the Relay can be easily flush mounted on the panel.
With appropriate mounting accessories the Relay can be mounted through panel cut-out for flush mounting:

Front View HITECH SERIES

CSENEX-I 101

O VER C URRENT R E LAY

191.5

ON
SET RESET
L1

L2

L3

I>

I>>

Ie>

Ie>>

TRIP

HITECH SERIES
(Figure 13)

140.7
149.7

Side View
158.0

(Figure 14)

34.0 120.0
18.3
154.0
172.5

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Dimensional Details contd..

Back View
B A

1 2 1 2

3 4 3 4

5 6 5 6

7 8 7 8

CSENEX
9 10 Series 9 10

130.0
158.2
191.5
11 12 11 12

13 14 13 14

15 16 15 16

17 18 17 18

19 20 19 20 (Figure 15)
21 22 21 22

23 24 23 24

Earth

18.3

110.0

Top View

(Figure 16)
120.0
172.5
34.0

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 H I-TECH N EX SERIES

22) Mounting arrangement of the Relay

Back View

Back Terminal numbering of CSENEX-I 101/150/250 Back Terminal numbering of CSENEX-I 350

B A A B

1 2 1 2 24 23 1 2

3 4 3 4 22 21 3 4

5 6 5 6 20 19 5 6

7 8 7 8 18 17 7 8

9 10 9 10 16 15 9 10

11 12 CSENEX 11 12 14 13 CSENEX 11 12
Series Series
13 14 13 14 12 11 13 14

15 16 15 16 10 9 15 16

17 18 17 18 8 7 17 18

19 20 19 20 6 5 19 20

21 22 21 22 4 3 21 22

23 24 23 24 2 1 23 24

Earth Earth

(Figure 17) (Figure 18)

Panel sheet

Side View

Holding clamps

Mounting from back side

Holding clamps

Panel sheet

(Figure 19)

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23) Panel mounting of the relay

Clamp requ
ired to inse
rt from bac
k side

Panel cut
out : Width
x Height =
112 x 160m
m

112.0

160.0

Slide in
the rela
y throug
h cut ou
t are for
panel m
ounting

(Figure 20)

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24) Ordering Information

CSENEX-I - 101 - X - X - X - X - X - X - V

Protection Series *
101

Rated Current
1 : 1A Rated Phase & Earth Current
5 : 5A Rated Phase & Earth Current
S : 1A+5A Rated Phase & Earth Current

Enclosure Type
D : Draw out enclosure
N : Non-Draw out enclosure

Digital/Binary Input
I0 : 0 DI
I2 : 2 DI
I4 : 4 DI
I6 : 6 DI

Digital Output Contact

D4 : 4 DO
D6 : 6 DO

Auxiliary Supply Range

W : 18 - 150V DC
H : 80 - 280V AC / 90V - 300V DC

Communication
0 : No Communication
M : MODBUS on RS-485
I : IEC-103 on RS-485

Mounting Arrangement
V : Vertical mounting

* Protection model; Refer Table-A

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25) Ordering Information

CSENEX-I - X - S - D - X - X - X - X - V

Protection Series *
150
250
350

Rated Current
S : 1A+5A Rated Phase & Earth Current

Enclosure Type
D : Draw out enclosure

Digital/Binary Input
I4 : 4 DI
I6 : 6 DI

Digital Output Contact

D4 : 4 DO
D6 : 6 DO

Auxiliary Supply Range

W : 18 - 150V DC
H : 80 - 280V AC / 90V - 300V DC

Communication
M : MODBUS on RS-485
I : IEC-103 on RS-485

Mounting Arrangement
V : Vertical mounting

* Protection model; Refer Table-A

C&S Electric Ltd. 41

 H I-TECH N EX SERIES

25) Revision History

S.No. Rev.No. Details Date

01 01 Relay photos changes as per the new sticker 29.06.21
02 01 Include DO DI Assignment table on Page 21, 22 & 23 29.06.21
03 02 Back view terminal no. changed 10.07.21
04 03 Change in ordering information (separated one for different model selection) 24.12.21
05 04 Removed no comm option from 150/250... order information page 30.12.21
06 05 Removed highly stabilized conn diagram & zero current differential conn diagram 04.01.22
07 06 Derived Earth ANSI code changed from 67N to 50N 15.04.22

Issue Date: 12.04.21, Rev. No: 06, Rev. Date: 15.04.22

Technical Question or After-sales Service NOTE
Customer Center Quick Response The content in this document are not binding and is for
Service, Excellent Technical Support 1800 572 2012 general information. C&S reserves the right to change
the design, content or specification contained in this
For further information, please contact: catalog without prior notice.
C&S Electric Ltd.
(Protection & Measurement Devices)
C-60, Wing-A, Phase-II, Noida-201 305, Dist: Gautam Budh Nagar (U.P) INDIA
Phone : +91-120-38748 00 / 01 Fax: +91-120-3874802

Branch office
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Mumbai: +91-22-241147 27/28 ---- cspc.mumbai@cselectric.co.in
Pune: +91-20-242505 18/19 +91 20 30283244 pune@cselectric.co.in