CJX
Interposing Relay Set
Instruction Manual
NR Electric Co., Ltd.
Preface
CJX Interposing Relay Set i
Date: 2012-03-29
Preface
Introduction
This guide and the relevant operating or service manual documentation for the equipment provide
full information on safe handling, commissioning and testing of this equipment.
Documentation for equipment ordered from NR is dispatched separately from manufactured goods
and may not be received at the same time. Therefore, this guide is provided to ensure that printed
information normally present on equipment is fully understood by the recipient.
Before carrying out any work on the equipment, the user should be familiar with the contents of
this manual, and read relevant chapter carefully.
This chapter describes the safety precautions recommended when using the equipment. Before
installing and using the equipment, this chapter must be thoroughly read and understood.
Health and Safety
The information in this chapter of the equipment documentation is intended to ensure that
equipment is properly installed and handled in order to maintain it in a safe condition.
When electrical equipment is in operation, dangerous voltages will be present in certain parts of
the equipment. Failure to observe warning notices, incorrect use, or improper use may endanger
personnel and equipment and cause personal injury or physical damage.
Before working in the terminal strip area, the equipment must be isolated.
Proper and safe operation of the equipment depends on appropriate shipping and handling,
proper storage, installation and commissioning, and on careful operation, maintenance and
servicing. For this reason, only qualified personnel may work on or operate the equipment.
Qualified personnel are individuals who:
Are familiar with the installation, commissioning, and operation of the equipment and of the
system to which it is being connected;
Are able to safely perform switching operations in accordance with accepted safety
engineering practices and are authorized to energize and de-energize equipment and to
isolate, ground, and label it;
Are trained in the care and use of safety apparatus in accordance with safety engineering
practices;
Are trained in emergency procedures (first aid).
Preface
CJX Interposing Relay Set ii
Date: 2012-03-29
Instructions and Warnings
The following indicators and standard definitions are used:
DANGER!
It means that death, severe personal injury, or considerable equipment damage will occur if safety
precautions are disregarded.
WARNING!
It means that death, severe personal, or considerable equipment damage could occur if safety
precautions are disregarded.
CAUTION!
It means that light personal injury or equipment damage may occur if safety precautions are
disregarded. This particularly applies to damage to the device and to resulting damage of the
protected equipment.
WARNING!
The firmware may be upgraded to add new features or enhance/modify existing features, please
make sure that the version of this manual is compatible with the product in your hand.
WARNING!
During operation of electrical equipment, certain parts of these devices are under high voltage.
Severe personal injury or significant equipment damage could result from improper behavior.
Only qualified personnel should work on this equipment or in the vicinity of this equipment. These
personnel must be familiar with all warnings and service procedures described in this manual, as
well as safety regulations.
In particular, the general facility and safety regulations for work with high-voltage equipment must
be observed. Noncompliance may result in death, injury, or significant equipment damage.
DANGER!
Never allow the current transformer (CT) secondary circuit connected to this equipment to be
opened while the primary system is live. Opening the CT circuit will produce a dangerously high
voltage.
WARNING!
Preface
CJX Interposing Relay Set iii
Date: 2012-03-29
Exposed terminals
Do not touch the exposed terminals of this equipment while the power is on, as the high voltage
generated is dangerous
Residual voltage
Hazardous voltage can be present in the DC circuit just after switching off the DC power supply. It
takes a few seconds for the voltage to discharge.
CAUTION!
Earth
The earthing terminal of the equipment must be securely earthed
Operating environment
The equipment must only be used within the range of ambient environment detailed in the
specification and in an environment free of abnormal vibration.
Ratings
Before applying AC voltage and current or the DC power supply to the equipment, check that they
conform to the equipment ratings.
Printed circuit board
Do not attach and remove printed circuit boards when DC power to the equipment is on, as this
may cause the equipment to malfunction.
External circuit
When connecting the output contacts of the equipment to an external circuit, carefully check the
supply voltage used in order to prevent the connected circuit from overheating.
Connection cable
Carefully handle the connection cable without applying excessive force.
Preface
CJX Interposing Relay Set iv
Date: 2012-03-29
Copyright
Version: R1.02
P/N: EN_CZXL0107.0086.0003
Copyright NR 2012. All rights reserved
NR ELECTRIC CO., LTD.
69 Suyuan Avenue. Jiangning, Nanjing 211102, China
Tel: +86-25-87178185, Fax: +86-25-87178208
Website: www.nrelect.com, www.nari-relays.com
Email: [email protected]
We reserve all rights to this document and to the information contained herein. Improper use in particular reproduction and dissemination
to third parties is strictly forbidden except where expressly authorized.
The information in this manual is carefully checked periodically, and necessary corrections will be included in future editions. If
nevertheless any errors are detected, suggestions for correction or improvement are greatly appreciated.
We reserve the rights to make technical improvements without notice.
Table of Contents
CJX Interposing Relay Set i
Date: 2012-03-29
Table of Contents
Preface ..................................................................................................... i
Introduction ................................................................................................................ i
Health and Safety ....................................................................................................... i
Instructions and Warnings ....................................................................................... ii
Table of Contents .................................................................................... i
1 Introduction ......................................................................................... 1
1.1 Application ........................................................................................................... 1
1.2 Function ............................................................................................................... 1
1.3 Features ............................................................................................................... 1
1.4 Product Type ....................................................................................................... 2
2 Technical Data ..................................................................................... 3
2.1 Electrical Specifications ..................................................................................... 3
2.1.1 Power Supply ........................................................................................................................ 3
2.1.2 Binary Output ........................................................................................................................ 3
2.2 Mechanical Specifications ................................................................................. 3
2.3 Ambient Temperature and Humidity Range ...................................................... 4
2.4 Type Tests ............................................................................................................ 4
2.4.1 Environmental Tests .............................................................................................................. 4
2.4.2 Mechanical Tests................................................................................................................... 4
2.4.3 Electrical Tests ...................................................................................................................... 4
2.4.4 Electromagnetic Compatibility ............................................................................................... 4
2.5 Certifications ....................................................................................................... 5
3 Operation Theory ................................................................................ 7
3.1 Overview .............................................................................................................. 7
Table of Contents
CJX Interposing Relay Set ii
Date: 2012-03-29
3.2 Control Circuit Module (Single Tripping Coil) .................................................. 8
3.2.1 Power Supply ........................................................................................................................ 9
3.2.2 Circuit Breaker Open State Supervision ................................................................................ 9
3.2.3 Closing Circuit ....................................................................................................................... 9
3.2.4 Trip Circuit ........................................................................................................................... 10
3.2.5 KKJ ..................................................................................................................................... 10
3.2.6 Anti-pump ............................................................................................................................ 11
3.2.7 Circuit Breaker Closed State Supervision ........................................................................... 12
3.2.8 Pressure Supervision .......................................................................................................... 12
3.2.9 Spare Contacts ................................................................................................................... 12
3.3 Seal-in Module ................................................................................................... 12
3.4 Voltage Switchover Module with Latch ........................................................... 14
3.5 Voltage Switchover Module without Latch ...................................................... 16
3.6 LOCKOUT-A Module ......................................................................................... 17
3.7 LOCKOUT-B Module ......................................................................................... 20
3.8 Repeat Relay Module ........................................................................................ 21
3.9 Control Circuit Module (Double Tripping Coils) ............................................. 22
3.9.1 Power Supply and Its Supervision ...................................................................................... 22
3.9.2 Circuit Breaker Open State Supervision .............................................................................. 26
3.9.3 Closing Circuit ..................................................................................................................... 26
3.9.4 Trip Circuit 1 ........................................................................................................................ 26
3.9.5 SHKKJ and STKKJ ............................................................................................................. 26
3.9.6 Anti-pump ............................................................................................................................ 27
3.9.7 Circuit Breaker Closed State Supervision circuit 1 .............................................................. 27
3.9.8 Circuit Breaker Closed State Supervision circuit 2 .............................................................. 27
3.9.9 Trip Circuit 2 ........................................................................................................................ 28
3.9.10 Pressure Supervision ........................................................................................................ 28
3.9.11 Spare Contacts .................................................................................................................. 28
3.10 Voltage Parallel Module .................................................................................. 29
Table of Contents
CJX Interposing Relay Set iii
Date: 2012-03-29
4 Hardware ........................................................................................... 31
4.1 Overview ............................................................................................................ 31
4.1.1 CJX-01 ................................................................................................................................ 31
4.1.2 CJX-02 ................................................................................................................................ 32
4.1.3 CJX-03 ................................................................................................................................ 32
4.1.4 CJX-04 ................................................................................................................................ 33
4.1.5 CJX-11 ................................................................................................................................ 33
4.1.6 CJX-21 ................................................................................................................................ 34
5 Installation and Commissioning ...................................................... 35
5.1 Introduction ....................................................................................................... 35
5.2 Safety Information............................................................................................. 35
5.3 Overview ............................................................................................................ 37
5.4 Unpacking and Checking the Protection Equipment ..................................... 37
5.5 Installing the Protective Device ....................................................................... 38
5.5.1 Overview ............................................................................................................................. 38
5.5.2 Dimensions ......................................................................................................................... 38
5.5.3 Grounding Guidelines ......................................................................................................... 39
5.5.4 Cubicle Grounding .............................................................................................................. 40
5.5.5 Making Electrical Connections ............................................................................................ 40
5.6 Check the External Circuit ............................................................................... 41
5.7 Insulation Test (if required) .............................................................................. 41
5.8 Final Check ........................................................................................................ 42
6 Maintenance ...................................................................................... 43
6.1 Routine Check ................................................................................................... 43
6.2 Replace Failed Modules ................................................................................... 43
6.3 Cleaning ............................................................................................................. 44
6.4 Storage ............................................................................................................... 44
Table of Contents
CJX Interposing Relay Set iv
Date: 2012-03-29
7 Decommissioning and Disposal ...................................................... 45
7.1 Decommissioning ............................................................................................. 45
7.2 Disposal ............................................................................................................. 45
8 Manual Version History .................................................................... 47
1 Introduction
CJX Interposing Relay Set 1
Date: 2012-03-29
1 Introduction
1.1 Application
CJX series interposing relay set are designed to provide various restart relay modules for
protectors. The device is assembled by combined module, with 14 slots which are independent. It
can be configured flexibly, and has been applied widely in actual projects.
Current CJX series interposing relay set have been furnished with complete types of module which
can be classified as follows by their functions:
1. Control relays of three-phase circuit breaker with one or two trip coil(s)
2. Seal-in relays
3. Switchover relays of voltage with or without latch
4. Lockout relays
5. Contacts multiplication relays
6. Paralleling relays of voltage
Since each module is independent respectively, the device has extreme scalability. The types of
module can be extended in the future, which can meet various requirements in the field.
1.2 Function
1. Manual closing, reclosing, phase-segregated tripping functions
2. DC power supply monitoring
3. Anti-pump function
4. Open state supervision, closed state supervision
5. Low pressure to block tripping, closing and AR
6. AC voltage switchover
1.3 Features
1. The types of modules are complete, with perfect functions and flexible configuration, which
can meet various project requirements.
2. The device uses imported completely-sealed, high-resistance and small power consumption
relay, which greatly decreases the power consumption and heating, and improve humidity
proof and other properties, thus increasing the safety of the device.
1 Introduction
CJX Interposing Relay Set 2
Date: 2012-03-29
3. The device can provide many reserved relays, providing flexible applications.
1.4 Product Type
CJX series interposing relay set are designed to provide various extension relay module for
protective device, classified into six types by different module configuration: CJX-01, CJX-02,
CJX-03, CJX-04, CJX-11 and CJX-21. Various module assembled combined with relevant integral
panel, can meet the requirements of most projects.
Type Application Scope
CJX-01 Applied to the areas requiring several breakers operation circuits with single tripping coil and
voltage switching circuits
CJX-02 Applied to the areas requiring LOCKOUT relay to operate breaker without operation circuit
CJX-03 Applied to the areas requiring several tripping/closing current seal-in circuits and repeat relay
circuits
CJX-04 Applied to the areas requiring several voltage switch and voltage parallel circuits
CJX-11 Applied to the areas requiring to operate two sets of three-phase interlock breakers with single
tripping coil and realize double busbars voltage switching
CJX-21 Applied to the areas requiring to operate a set of three-phase interlock breaker with double
tripping coil and realize double busbars voltage switching
Note!
To enhance or revise current function, the hardware of device may be updated, please
confirm that this version of manual is compatible with your products.
2 Technical Data
CJX Interposing Relay Set 3
Date: 2012-03-29
2 Technical Data
2.1 Electrical Specifications
2.1.1 Power Supply
Rated Voltage 110Vdc, 125Vdc, 220Vdc, 250Vdc
Variation (80%~120%)Un
Ripple in the DC auxiliary
voltage Max 15% of the DC value. Per IEC 60255-11:1979
Burden Quiescent condition < 40W
Operating condition < 70W
2.1.2 Binary Output
Contact Type Tripping contact Signal contact
Output mode Potential free contact
Rated Voltage 250Vac/dc 250Vac/dc
Test voltage across open
contact > 1000Vac rms
Continuous carry 8A 5A
Short duration current
(200ms) 50A
Pickup time (Typ/Max) 5ms/10ms 10ms/15ms
Dropout time (Typ/Max) 4ms/10ms 8ms/10ms
Bounce time < 1ms < 1ms
Breaking capacity at 250Vdc 0.4A resistance
0.2A inductive (L/R=40ms)
0.2A resistance
0.05A inductive (L/R=40ms)
2.2 Mechanical Specifications
Enclosure dimensions
(WHD) 482.6177291 (unit: mm)
Trepanning dimensions
(WH) 450179, M6 screw
Mounting Way Flush mounted
Weight per device Approx. 15kg
Housing material Aluminum alloy
Housing color Silver grey
Location of terminal Rear panel of the device
Protection class: Per IEC60529:1989
2 Technical Data
CJX Interposing Relay Set 4
Date: 2012-03-29
Front side IP40, Up to IP51(Flush mounted)
Other sides IP30
Rear side, connection
terminals IP20
2.3 Ambient Temperature and Humidity Range
Standard IEC 60255-6:1988
Operating temperature -25C~+60C
Transport and storage
temperature range -40C~+70C
Permissible humidity 5%~95%, condensation not permissible
Pollution degree 2
Altitude 100M, 500Vdc
Overvoltage category
2.4.4 Electromagnetic Compatibility
1MHz burst disturbance test
Per IEC 60255-22-1:1988 (idt IEC61000-4-12:1995)
Common mode: class III 2.5KV
Differential mode: class III 1.0KV
Electrostatic discharge test Per IEC60255-22-2:1996 (idt IEC 61000-4-2:2006) class IV
For contact discharge: 8kV
2 Technical Data
CJX Interposing Relay Set 5
Date: 2012-03-29
For air discharge: 15kV
Radio frequency
interference tests
Per IEC 60255-22-3:2000 (idt IEC 61000-4-3:1995) class III
Frequency sweep
Radiated amplitude-modulated
10V/m (rms), f=801000MHz
Spot frequency
Radiated amplitude-modulated
10V/m (rms), f=80MHz/160MHz/450MHz/900MHz
Radiated pulse-modulated
10V/m (rms), f=900MHz
Fast transient disturbance
tests
Per IEC 60255-22-4:2002 (idt IEC 61000-4-4:2004)
Power supply, I/O, Earth: Class IV, 4kV, 2.5 kHz, 5/50ns
Communication terminals: Class IV, 2kV, 5 kHz, 5/50ns
Surge immunity test Per IEC 60255-22-5:2002 (idt IEC 61000-4-5:1995) class III
Power supply, AC input, I/O port: 2kV, line to earth; 1kV line to line, 1.2/50us
Conducted RF
Electromagnetic Disturbance
Per IEC 60255-22-6:2001
Power supply, AC, I/O, Comm. Terminal: Class III, 10Vrms, 150 kHz~80MHz
Power Frequency Magnetic
Field Immunity
Per IEC 61000-4-8:1993
Class V: 100A/m for 1min, 1000A/m for 3s
Pulse Magnetic Field
Immunity
Per IEC 61000-4-9:1993
Class V: 6.4/16s, 1000A/m for 3s
Damped oscillatory
magnetic field immunity
IEC 61000-4-10:1993
Class V: 100kHz & 1MHz100A/m
2.5 Certifications
1. ISO9001: 2000
2. ISO14001:2004
3. OHSAS18001:1999
4. ISO10012:2003
5. CMMI L4
6. EMC: 2004/108/EC, EN50263:1999
7. Products safety(PS): 2006/95/EC, EN61010-1:2001
2 Technical Data
CJX Interposing Relay Set 6
Date: 2012-03-29
3 Operation Theory
CJX Interposing Relay Set 7
Date: 2012-03-29
3 Operation Theory
3.1 Overview
CJX series devices are assembled by modules which are mutually independent. Twelve types of
modules are provided, as listed in Table 3.1-1.
Table 3.1-1 Types of modules
No. Function ID
A Control relay of circuit breaker with single tripping coil SWI
B Seal-in current relays BO
C Voltage switchover relays RLY
D Lockout relays (type A) BO
E Repeat relays BO
F Isolation and shield
G Control relays of circuit breaker with double tripping coils (card A) SWI
H Control relays of circuit breaker with double tripping coils (card B) SWI
I Control relays of circuit breaker with double tripping coils (card C) SWI
J Voltage paralleling relays BO
K Voltage switchover RLY
L Lockout relays (type B) BO
Z Spare slot
CJX device has 14 slots in total. The types and quantity of modules can be configured flexibly.
Based on summary of many years of experiences, we integrate six types of devices which are
composed of various integral panels assembled by various modules, which can meet most current
application requirements, in which:
1. CJX-01
Can be equipped with four control circuit modules (A) and four voltage switchover modules (C or K)
at most
2. CJX-02
Can be equipped with eight LOCKOUT modules (D or L) at most
3. CJX-03
Composed of seal-in current module (B) and repeat relay module (E), the numbers of modules are
determined according to the requirements
4. CJX-04
Can be equipped with ten voltage switchover modules (C or K) and three voltage paralleling
modules (J)
3 Operation Theory
CJX Interposing Relay Set 8
Date: 2012-03-29
5. CJX-11
Composed of two control circuit modules (A) and two voltage switchover modules (c or K)
6. CJX-21
Composed of a set of (three card-A, B, C) control circuit modules of double tripping coils with DC
power switchover (G, H, I) and two voltage switchover modules (C or K)
3.2 Control Circuit Module (Single Tripping Coil)
The principle of control circuit module with single tripping coil is shown in Figure 3.2-1.
R1'
D6
R1
S2'
S1'
R15 L1
D23
R14
D16
n11
n3
n1 n15
n12
n2
n4
n20
S3'
n5
n13
n14
n16
n18
Pwr+
D24
L2
R3
R4
R2'R2
R16
R10R12
R9R11
R13
D1
D2
D3
D4
D5
D8D7
Pwr-Power
Supply
Open state
supervision
Seal-in of closing
Auto-reclosingAuto-
Reclosing
Anti pump
Manual
ClosingManual
Trip
Manual closing
Manual tripping
Protect
Trip
Protection tripping
Seal-in of tripping
Closed state
supervision
Low pressure to
block closing
Low pressure to block
tripping
Low pressure to
block tripping and
closing
Low pressure to
block closing
Low pressure to
block tripping
Low pressure to
block tripping and
closing
To TWJ-
To HWJ-
Closing circuit with latch
Tripping circuit with latch
CC52b
TC
52a
Figure 3.2-1 Principle of control circuit module with single tripping coil
The rear terminals of control circuit module with single tripping coil are shown in the following
table.
Pin No. Sign Description
01 Pwr+ Positive pole of power supply
02 In_ManCls Input of manual closing
03 CC To closing coil
04 In_ManTrp Input of manual tripping
05 TC To tripping coil
3 Operation Theory
CJX Interposing Relay Set 9
Date: 2012-03-29
08~06 KKJ-1 Binary output 1 of post closing position
08~07 TWJ2-1 Binary output 1 of open position relay 2
08 Common_1 Common terminal 1
09 TWJ2-2 Binary output 2 of open position relay 2
10 KKJ-2 Binary output 2 of post closing position
11 TWJ- Negative pole of power supply for open position relay
12 In_AR Input of automatic reclosure
13 HWJ- Negative pole of power supply for closed position relay
14 In_LowPres_Cls Input of low pressure to block closing circuit breaker
15 Pwr- Negative pole of power supply
16 In_LowPres_Trp Input of low pressure to block tripping circuit breaker
21~17 TWJ3-1 Binary output 1 of open position relay 3
18 In_LowPres_Trp&Cls Input of low pressure to block tripping and closing circuit breaker
21~19 HWJ2 Binary output of closed position relay 2
20 In_ProtTrp Input of protection tripping
21 Common_2 Common terminal 2
25~22 HYJ2 Binary output of low pressure to block closing circuit breaker
25~23 BO_TCCS Binary output of control circuit failure
25~24 TYJ2 Binary output of low pressure to block tripping circuit breaker
25 Common_3 Common terminal 3
26~30 TWJ1 Binary output of open position relay 1
27~29 TWJ3-2 Binary output 2 of open position relay 3
28~30 HWJ1 Binary output of closed position relay 1
30 Common_4 Common terminal 4
3.2.1 Power Supply
Auxiliary power for control relays of circuit breaker is supplied via terminal n1 and n15.
3.2.2 Circuit Breaker Open State Supervision
The auxiliary relays TWJ1, TWJ2 and TWJ3 are applied to supervise the open state of Circuit
breaker when terminal n11 is connected to the negative pole of power supply in series with normal
closed auxiliary contact of circuit breaker (52b).
In addition, if terminal n11 is connected with normal closed auxiliary contact of circuit breaker (52b)
and its close coil (CC), TWJ1, TWJ2 and TWJ3 can provide supervision on close coil as well.
Indicator L1 in green shows the open state of circuit breaker, and it can be seen on the faceplate
with designation 52b.
3.2.3 Closing Circuit
Auto reclosing signal comes from terminal n12, while manual closing signal comes from n2.
Terminal n3 shall be connected to close coil (CC) in series with normal closed auxiliary contact of
circuit breaker (52b).
3 Operation Theory
CJX Interposing Relay Set 10
Date: 2012-03-29
HBJ is a seal-in auxiliary relay, which pickup current is adaptive to the closing current in the range
of 0.5A-4A. If the closing current is greater than 4A, an additional resistor-R1 can be added.
As shown in Figure 3.2-1, after the protection device sends closing command, the circuit is
conducted through the normally closed contact of anti-pump relay TBJV, the seal-in relay HBJ,
the normally closed auxiliary contact of circuit breaker 52b and closing coil CC. The seal-in
relay HBJ will operate, and its normally open contact HBJ will be closed. The closing circuit with
latch will be conducted through the normally open contact HBJ, the normally closed contact of
anti-pump relay TBJV, the seal-in relay HBJ, the normally closed auxiliary contact of circuit
breaker 52b and closing coil CC until the normally closed auxiliary contact of circuit breaker
52b is open. This circuit ensures that circuit breaker is still closed reliably even if the closing
command from the protection device has dropped off.
TBJV is the anti-pump relay; please refer to section 3.2.6 for details. This function can be released
by shortening S2 to bypass the normal closed contacts of TBJV.
Low pressure blocking function for manual closing is achieved by normal closed contact of HYJ1
and HYJ2; please refer to section 3.2.8 for details. This function can be released by shortening S1,
to bypass the normal closed contact of HYJ1 and HYJ2.
3.2.4 Trip Circuit
Protection trip signal comes from terminal n20, while manual trip signal comes from n4.
Terminal n5 shall be connected to trip coil (TC) in series with normal open auxiliary contact of
circuit breaker (52a).
TBJ is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of
0.5A-4A. If the trip current is greater than 4A, an additional resistor-R2 can be added. TBJ is also
used in anti-pump circuit, please refer to section 3.2.6.
As shown in Figure 3.2-1, after the protection device sends tripping command, the circuit is
conducted through the normally closed contact of tripping pressure relay TYJ1 and TYJ2, the
seal-in relay TBJ, the normally open auxiliary contact of circuit breaker 52a and tripping coil
TC. The seal-in relay TBJ will operate, and its normally open contact TBJ will be closed. The
tripping circuit with latch will be conducted through the normally open contact TBJ, the normally
closed contact of tripping pressure relay TYJ1 and TYJ2, the seal-in relay TBJ, the normally
open auxiliary contact of circuit breaker 52a and tripping coil TC until the normally open
auxiliary contact of circuit breaker 52a is open. This circuit ensures that circuit breaker is still
open reliably even if the tripping command from the protection device has dropped off.
Low pressure blocking function for trip is achieved by normal closed contact of TYJ1 and TYJ2;
please refer to section 3.2.8 for details. This function can be released by shortening S3 to bypass
the normal closed contact of TYJ1 and TYJ2.
3.2.5 KKJ
KKJ is an bi-stable auxiliary relay. When circuit breaker is closed manually, the relay KKJ will pick
up and latch, when circuit breaker is tripped manually, the relay KKJ will reset. The normal open
contact of KKJ can be used together with normal closed auxiliary contact of circuit breaker (52b),
3 Operation Theory
CJX Interposing Relay Set 11
Date: 2012-03-29
to initiate auto-reclosure in case that circuit breaker trips especially without any trip commands
from protection and manual switch.
3.2.6 Anti-pump
Anti-pump function is achieved via auxiliary relay TBJV.
In the event that a breaker is closed into a fault, while the operator is applying a close signal via a
closed control switch, the circuit breaker will trip and prevent closing again until the closing circuit
has been de-energized by the operator's releasing the control switch.
When trip signal comes and at the same time close signal persists, the contact of TBJ will close
and TBJV will operate and keep sealed with its own normal open contact. The normal closed
contact of TBJV will cut off closing circuit to prevent any further closing.
If there is anti-pump circuit in circuit breaker itself, the anti-pump function of this relay set can be
released by shortening S2 to bypass the normal closed contact of TBJV.
3 Operation Theory
CJX Interposing Relay Set 12
Date: 2012-03-29
3.2.7 Circuit Breaker Closed State Supervision
The auxiliary relays HWJ1, HWJ2 are applied to supervise the closed state of Circuit breaker
when terminal n13 is connected to the negative pole of power supply in series with normal open
auxiliary contact of circuit breaker (52a).
In addition, if terminal n13 is connected to normal open auxiliary contact of circuit breaker (52a)
and its trip coil (TC), HWJ1, HWJ2 can provide supervision on trip coil as well.
Indicator L2 in red shows the closed state of circuit breaker, and it can be seen on the faceplate
with designation 52a.
3.2.8 Pressure Supervision
Three levels of pressure are provided: Low pressure to inhibit closing from terminal n14, low
pressure to inhibit trip from terminal n16, and low pressure to inhibit switching (both closing and
trip) from n18. The normal closed contacts of HYJ1 and HYJ2 are put in closing circuit, while the
normal closed contacts of TYJ1 and TYJ2 are put in trip circuit.
3.2.9 Spare Contacts
The device provides some reserved auxiliary contacts also, used to cooperate with other
protectors to realize other functions, which is shown in Figure 3.2-2.
n8 n6
n7
n21 n17
n19
n25 n24
n22
n23
n27n29
n9n10
n30 n26
n28
Figure 3.2-2 Output contacts of control circuit with single tripping coil
3.3 Seal-in Module
Principle and contact output for current retain module are shown in Figure 3.3-1.
3 Operation Theory
CJX Interposing Relay Set 13
Date: 2012-03-29
D7 D8
D1
R1R2
J1
n1
n8 n7
D13 D14
D4
R11R12
J4
n4
n14 n13
D9 D10
D2
R3R4
J2
n2
n10 n9
D15 D16
D5
R9
R10
J5
n5
n16 n15
D11 D12
D3
R5R6
J3
n3
n12 n11
D17 D18
D6
R7R8
J6
n6
n18 n17
n19n20
n22
n24
n21
n23
n25n26
n28
n30
n27
n29
J4
J5
J6
J1
J2
J3
Figure 3.3-1 Principle and contact output for seal-in module
The rear terminals of seal-in module are shown in the following table.
Pin No. Sign Description
01 In_SIG1 Input terminal of signal for J1 relay
02 In_SIG2 Input terminal of signal for J2 relay
03 In_SIG3 Input terminal of signal for J3 relay
04 In_SIG4 Input terminal of signal for J4 relay
05 In_SIG5 Input terminal of signal for J5 relay
06 In_SIG6 Input terminal of signal for J6 relay
07 Out_SIG1 Output terminal of signal for J1 relay
08 Pwr+_1 The positive polarity of power supply for J1 relay
09 Out_SIG2 Output terminal of signal for J2 relay
10 Pwr+_2 The positive polarity of power supply for J2 relay
11 Out_SIG3 Output terminal of signal for J3 relay
12 Pwr+_3 The positive polarity of power supply for J3 relay
13 Out_SIG4 Output terminal of signal for J4 relay
14 Pwr+_4 The positive polarity of power supply for J4 relay
15 Out_SIG5 Output terminal of signal for J5 relay
16 Pwr+_5 The positive polarity of power supply for J5 relay
17 Out_SIG6 Output terminal of signal for J6 relay
18 Pwr+_6 The positive polarity of power supply for J6 relay
19~20 J1 The normally open contact of J1 relay
21~22 J2 The normally open contact of J2 relay
23~24 J3 The normally open contact of J3 relay
25~26 J4 The normally open contact of J4 relay
27~28 J5 The normally open contact of J5 relay
29~30 J6 The normally open contact of J6 relay
3 Operation Theory
CJX Interposing Relay Set 14
Date: 2012-03-29
Current seal-in module provides six identical DC seal-in relays. Select corresponding parallel
resistance (R2, R4, R6, R8, R10 and R12, cannot be used when DC seal-in current is less or
equal to 4A) for each DC seal-in relay according to DC seal-in current in the field.
Terminals n8, n10, n12, n14, n16, n18 are connected to positive pole of power supply, combined
with output contacts provided by relevant relay can realize seal-in function. Terminals n7, n9, n11,
n13, n15 and n17 are connected to negative pole of power supply through tripping coil or closing
coil. n1, n2, n3, n4, n5 and n6 are connected to tripping contacts of protective device.
3.4 Voltage Switchover Module with Latch
The principle and contact output of voltage switchover module with latch are shown in Figure
3.4-1.
n5
n6
n7
n10
n13
n8
n9
n11
n12
D17 D18
L1
R11 L2R12
n1
n2
n29
n30
n16 n14
n15
n17
n18
n19
n22
n25
n20
n21
n23
n24
n28 n26
n27
n3
n4
D8
D16
D1 D2
R9 R10
Aux-
Aux+
NO on BB1
NC on BB1
NO on BB2
NC on BB2
Figure 3.4-1 Principle and contact output of voltage switchover module with latch
Where:
NO on BB1: Normally open contact of disconnector on busbar 1
NC on BB1: Normally closed contact of disconnector on busbar 1
NO on BB2: Normally open contact of disconnector on busbar 2
NC on BB2: Normally closed contact of disconnector on busbar 2
The rear terminals of voltage switchover module with latch are shown in the following table.
3 Operation Theory
CJX Interposing Relay Set 15
Date: 2012-03-29
Pin No. Sign Description
01 In_NO_DSBB1 Input of auxiliary normally open contact of disconnector switch on busbar 1
02 In_NC_DSBB1 Input of auxiliary normally closed contact of disconnector switch on busbar 1
03 In_NO_DSBB2 Input of auxiliary normally open contact of disconnector switch on busbar 2
04 In_NC_DSBB2 Input of auxiliary normally closed contact of disconnector switch on busbar 2
05 1U_1-1 Phase voltage input of busbar 1 of 1st group
06 1U_2-1 Phase voltage input of busbar 2 of 1st group
07 1U1 Phase voltage output after switching
08 1U_1-2 Phase voltage input of busbar 1 of 1st group
09 1U_2-2 Phase voltage input of busbar 2 of 1st group
10 1U2 Phase voltage output after switching
11 1U_1-3 Phase voltage input of busbar 1 of 1st group
12 1U_2-3 Phase voltage input of busbar 2 of 1st group
13 1U3 Phase voltage output after switching
14 1U_1-4 Start connection input of busbar 1 of 1st group
15 1U_2-4 Start connection input of busbar 2 of 1st group
16 1U4 Start connection input of after switching
17 2U_1-1 Phase voltage input of busbar 1 of 2nd group
18 2U_2-1 Phase voltage input of busbar 2 of 2nd group
19 2U1 Phase voltage output after switching
20 2U_1-2 Phase voltage input of busbar 1 of 2nd group
21 2U_2-2 Phase voltage input of busbar 2 of 2nd group
22 2U2 Phase voltage output after switching
23 2U_1-3 Phase voltage input of busbar 1 of 2nd group
24 2U_2-3 Phase voltage input of busbar 2 of 2nd group
25 2U3 Phase voltage output after switching
26~28 BO_LossVolt It is closed when two busbar lose voltage (i.e. neither of switching relays of
two busbars operates.)
27~28 BO_OpSimul It is closed when switching relays of bus1 and switching relays of bus 2
operate at same time.
28 Common Common terminal
29 Pwr+ Positive pole of power supply for the module
30 Pwr- Negative pole of power supply for the module
This module is used to switch voltage between two buses VT, for double busbars arrangement,
voltage can be automatically switched between two buses based on the state of isolator, the
device can be connected with the voltage of busbar or busbar . The state of isolator can be
reflected through normally closed and normally open auxiliary contacts of isolator of the line.
Isolator can provide a normally open and a normally closed auxiliary contact, its principle and
3 Operation Theory
CJX Interposing Relay Set 16
Date: 2012-03-29
output contacts are shown in Figure 3.4-1. If field isolator can only provide a couple of normally
open auxiliary contacts, after parallel connecting n1 and n4, connect to normally open contact of
busbar , after n2 and n3 are parallel connected, they are connected to the normally open contact
of busbar . N29 and n30 will be connected to the positive and negative poles of power supply
respectively.
Signal indicator LED L1 (green) and L2 (green) indicate this feeder is either connected to busbar
or busbar respectively.
3.5 Voltage Switchover Module without Latch
The principle and output contact of voltage switchover module without latch are shown in Figure
3.5-1.
n5
n6
n7
n10
n13
n8
n9
n11
n12
L1
L2
n1
n29
n30
n16 n14
n15
n17
n18
n19
n22
n25
n20
n21
n23
n24
n28 n26
n27
n3
D8
D1 D2
NO on BB2
AUX-
AUX+
NO on BB1
Figure 3.5-1 Principle and output contact of voltage switchover module without latch
The rear terminals of voltage switchover module without latch are shown in the following table.
Pin No. Sign Description
01 In_NO_DSBB1 Input of auxiliary normally open contact of disconnector switch on busbar 1
02 Blank
03 In_NO_DSBB2 Input of auxiliary normally open contact of disconnector switch on busbar 2
04 Blank
05 1U_1-1 Phase voltage input of busbar 1 of 1st group
06 1U_2-1 Phase voltage input of busbar 2 of 1st group
07 1U1 Phase voltage output after switching
08 1U_1-2 Phase voltage input of busbar 1 of 1st group
09 1U_2-2 Phase voltage input of busbar 2 of 1st group
3 Operation Theory
CJX Interposing Relay Set 17
Date: 2012-03-29
10 1U2 Phase voltage output after switching
11 1U_1-3 Phase voltage input of busbar 1 of 1st group
12 1U_2-3 Phase voltage input of busbar 2 of 1st group
13 1U3 Phase voltage output after switching
14 1U_1-4 Start connection input of busbar 1 of 1st group
15 1U_2-4 Start connection input of busbar 2 of 1st group
16 1U4 Start connection input of after switching
17 2U_1-1 Phase voltage input of busbar 1 of 2nd group
18 2U_2-1 Phase voltage input of busbar 2 of 2nd group
19 2U1 Phase voltage output after switching
20 2U_1-2 Phase voltage input of busbar 1 of 2nd group
21 2U_2-2 Phase voltage input of busbar 2 of 2nd group
22 2U2 Phase voltage output after switching
23 2U_1-3 Phase voltage input of busbar 1 of 2nd group
24 2U_2-3 Phase voltage input of busbar 2 of 2nd group
25 2U3 Phase voltage output after switching
26~28 BO_LossVolt It is closed when two busbar lose voltage (i.e. neither of switching relays of
two busbars operates.)
27~28 BO_OpSimul It is closed when switching relays of bus1 and switching relays of bus 2
operate at same time.
28 Common Common terminal
29 Pwr+ Positive pole of power supply for the module
30 Pwr- Negative pole of power supply for the module
The functions of voltage switchover module without latch are the same as that of voltage
switchover module with latch. The difference lies in that all relays cannot be latched. It will acts
when normally open contact of isolator is closed, and return when it is open.
When the signal of normally open auxiliary contact of isolator is lost, the device will output
alarming signal through n28 and n26.
Signal indicator LED L1 (green) and L2 (green) indicate that this feeder is either connected to
busbar or busbar respectively.
3.6 LOCKOUT-A Module
LOCKOUT-A module is composed of three LOCKOUT circuits, the relays are all magnetic latching
relays. To meet different applications, five options are provided at present, they are distinct in
terms of principle and configuration of output contacts.
Type 1: shown in Figure 3.6-1, composed of three sets of LOCKOUT circuits, each set will output
three pairs of normally open contacts.
3 Operation Theory
CJX Interposing Relay Set 18
Date: 2012-03-29
n7n8
n10
n12
n9
n11
n2
n13n14
n16
n18
n15
n17
L1
D1 D2
J1 J2
n1
n3
n4
J2
J1
J3
J1
J3
J2
J4
D3 D4
R1 R2
R3 R4
D5 D6
J3 J4n5
n6D7 D8
R5 R6
R7 R8
D9 D10
J5 J6n25
n26D11 D12
R9 R10
R11R12
R13 R14
n19n20
n22
n24
n21
n23
J5
J5
J6J4
J6
Pwr+
Reset 3
Trigger 3
Pwr-
Reset 1
Trigger 1
Reset 2
Trigger 2
Figure 3.6-1 Principle and output contact of LOCKOUT-A module (type 1)
Type 2: shown in Figure 3.6-2, composed of three LOCKOUT circuit, each set will output two
couple of normally open contacts and a set of normally closed contact.
n7n8
n10
n12
n9
n11
n2
n13n14
n16
n18
n15
n17
L1Pwr+
D1 D2
J1 J2
n1
n3
n4
J2
J1
J3
J1
J3
J2
J4
D3 D4
R1 R2
R3 R4
D5 D6
J3 J4n5
n6D7 D8
R5 R6
R7 R8
D9 D10
J5 J6n25
n26D11 D12
R9 R10
R11 R12
R13 R14
n19n20
n22
n24
n21
n23
J5
J5
J6J4
J6
Pwr-
Trigger 1
Reset 1
Trigger 2
Reset 2
Trigger 3
Reset 3
Figure 3.6-2 Principle and output contact of LOCKOUT-A module (type 2)
Type 3: shown in Figure 3.6-3, three LOCKOUT circuits are parallel connected to form a set of
LOCKOUT circuits, outputting nine pairs of normally open contacts in total.
3 Operation Theory
CJX Interposing Relay Set 19
Date: 2012-03-29
n7n8
n10
n12
n9
n11
n2
n13n14
n16
n18
n15
n17
L1
D1 D2
J1 J2
n1
n3
n4
J2
J1
J3
J1
J3
J2
J4
D3 D4
R1 R2
R3 R4
D5 D6
J3 J4
D7 D8
R5 R6
R7 R8
D9 D10
J5 J6
D11 D12
R9 R10
R11 R12
R13 R14
n19n20
n22
n24
n21
n23
J5
J5
J6J4
J6
Pwr-
Pwr+
Trigger
Reset
Figure 3.6-3 Principle and output contact of LOCKOUT-A module (type 3)
Type 4: shown in Figure 3.6-4, it is composed of three sets of LOCKOUT circuits, outputs five pairs
of normally open contacts and four pairs of normally closed contacts in total.
n7n8
n10
n12
n9
n11
n2
n13n14
n16
n18
n15
n17
L1
D1 D2
J1 J2
n1
n3
n4
J2
J1
J3
J1
J3
J2
J4
D3 D4
R1 R2
R3 R4
D5 D6
J3 J4n5
n6D7 D8
R5 R6
R7 R8
D9 D10
J5 J6n25
n26D11 D12
R9 R10
R11 R12
R13 R14
n19n20
n22
n24
n21
n23
J5
J5
J6
J4
J6
Pwr+
Pwr-
Trigger 1
Reset 1
Trigger 2
Reset 2
Trigger 3
Reset 3
Figure 3.6-4 Principle and output contact of LOCKOUT-A module (type 4)
Type 5: shown in Figure 3.6-5, three sets of LOCKOUT circuits are in parallel to form a set of
LOCKOUT circuit, outputting nine pairs of normally open contacts, which each pair of connecting
contacts are formed by parallel connecting the contacts of two different relays.
3 Operation Theory
CJX Interposing Relay Set 20
Date: 2012-03-29
n7n8
n2 L1
D1 D2
J1 J2
n1
n3
n4
J4
J1
D5 D6
R1 R2
R3 R4
D9 D10
J5 J6
D13 D14
R5 R6
R7 R8
D17 D18
J9 J10
D21 D22
R9 R10
R11 R12
R13 R14
J8
J12
D3 D4
J3 J4
D7 D8
D11 D12
J7 J8
D15 D16
D19 D20
J11 J12
D23 D24
J2
n10J1
J2
n9
n12J3
J4
n14J5
J6
n11
n13
n16J5
J6
n18J7
J8
n15
n17
n20J9
J10
n19
n22J9
J10
n24J11
J12
n21
n23
Trigger
Reset
Pwr+
Pwr-
Figure 3.6-5 Principle and output contact of LOCKOUT-A module (type 5)
Terminals n3, n5 and n25 are input terminals for action signal, terminals n4, n6 and n26 are input
terminals for reseting signal. n2 and n1 terminals are connected with the positive and negative
poles of operation power supply respectively. Signal indicator LED L1 is normally light (red) shows
LOCKOUT circuit acts.
3.7 LOCKOUT-B Module
LOCKOUT-B module only provides a set of LOCKOUT circuits. Its principle and output contacts
are shown in Figure 3.7-1. The J1~J4 in the Figure 3.7-1 are magnetic latching relays, J5 is not
magnetic latching relay.
n3 terminal is action signal input terminal, n4 terminal is input terminal of resetting signal. n2 and
n1 terminals are connected to the positive and negative poles of operation power supply
respectively. Indicator L1 is normally lit (red), indicating the action of LOCKOUT circuit.
n7n8
n12
n16
n11
n15
n2
n20 n19
n9n10
n14
n18
n13
n17
L1
D2
D1
J1 J2 J3 J4
n1
n3
n4
J4
J1 J1
J2 J2
J3 J3
J4
J5
D9
n22 n21 n24 n23J5 J5
Pwr+
Pwr-
Tigger
Reset
Figure 3.7-1 Principle and output contact of LOCKOUT-B module
3 Operation Theory
CJX Interposing Relay Set 21
Date: 2012-03-29
3.8 Repeat Relay Module
Repeat relay module has four independent circuits, each provides three output contacts, some of
which can be configured as normally open or normally closed contacts. The principle and output
contacts are shown in Figure 3.8-1.
n4, n6, n8 and n10 are action signal input terminal, n2 is connected to negative pole of operation
power supply.
D4
n4
D3
R8 R7 R6 R5T1 T2
D2
n6
D1
R4 R3 R2 R1T3 T4
D6
n8
D5
R12 R11 R10 R9T5 T6
D8
n10
D7
T7 T8R16 R15 R14 R13
n2
n18n17
n19
n21
n20
n22
n11 n12
n3
0n29
n1
n5
n3
n7
T1 T5
T1 T6
T2 T6
T3
n14n13
n15 n16
n26n25
n27
n23
n28
n24
T3
T7
T4
T7
T8
Figure 3.8-1 Principle and output contact of repeat relay module
The rear terminals of repeat relay module are shown in the following table.
Pin No. Sign Description
01~03 BO_Trp_6-1 Binary output 1 of tripping relay 6 (normally open contact)
02 Pwr- Negative pole of power supply for 4 signal inputs
04 In_SIG1 Input of 1st signal
05~07 BO_Trp_6-2 Binary output 2 of tripping relay 6 (normally open contact)
06 In_SIG2 Input of 2nd signal
08 In_SIG3 Input of 3rd signal
09 Blank Not used
10 In_SIG4 Input of 4th signal
11~12 BO_Trp_3-1 Binary output 1 of tripping relay 3 (normally open contact)
13~14 BO_Trp_3-2 Binary output 2 of tripping relay 3 (normally open contact)
15~16 BO_Trp_4 Binary output of tripping relay 4 (normally open contact)
17~18 BO_Trp_1-1 Binary output 1 of tripping relay 1 (normally open contact)
19~20 BO_Trp_1-2 Binary output 2 of tripping relay 1 (normally open contact)
21~22 BO_Trp_2 Binary output of tripping relay 2 (normally open contact)
3 Operation Theory
CJX Interposing Relay Set 22
Date: 2012-03-29
23~24 BO_Trp_8 Binary output of tripping relay 8 (normally open contact)
25~26 BO_Trp_7-1 Binary output 1 of tripping relay 7 (normally open contact)
27~28 BO_Trp_7-2 Binary output 2 of tripping relay 7 (normally open contact)
29~30 BO_Trp_5 Binary output of tripping relay 5 (normally open contact)
3.9 Control Circuit Module (Double Tripping Coils)
This module consists of three cards-A, B and C, and provides control circuit for a three-phase
circuit breaker with two trip coils.
3.9.1 Power Supply and Its Supervision
Two auxiliary power supplies are used.
Auxiliary power 1 is supplied via terminal nA1 and nA29 to the circuits of open state supervision,
manual trip, manual closing, auto-reclosing, protection trip 1, closed state supervision 1, and
anti-pump circuit.
Auxiliary power 2 is supplied via terminal nA3 and nC10 to the circuits of closed state supervision
2 and protection trip 2.
These two power supplies are supervised by relays 1JJ, 2JJ, 3JJ and 4JJ.
3 Operation Theory
CJX Interposing Relay Set 23
Date: 2012-03-29
PS +
nA1 nA29nB2L1
nB30
nA9
S2
S1
nA11
D4
D2
D3
R1
R1'
HYJ1
HYJ2
nA5
nA7
SHKKJ STKKJ
D1 S4
nA13
TYJ1 nA15TC1
TC2
HWJ3HWJ2HWJ1
L2nB2
HWJ6HWJ5HWJ4
L3nA3nB1
nB29
nB13
S3
TYJ2 nA19
nA17
nC6 nC12
nC4
nC2
nC10
nC8
nC3
nA21
nC1
nA22
nA18
nA20
R0
R0'
R2
R2'
CC
AUX1+ AUX1-Power Supply1
Open state
supervision
Seal-in of closing
Auto-reclosing
Anti-pump
Manual closing
Manual
tripping
Protection
tripping
Seal-in of trip
Closed state
supervision
Low pressure to
block closing
Low pressure to
block tripping
Low pressure to
block tripping and
closing
Trip
Co
il 1
Power
supply 2
Trip
Co
il 2
Manual tripProtection
trip
Seal-in of trip
Power
supply after
switching
Po
we
r su
pp
ly
Sw
itch
ove
r
Po
we
r su
pp
ly
su
pe
rvis
on
PS2
PS1
PS1
PS2
Low pressure to
block AR
Auto-Reclosing
Manual Closing
Manual Trip
Protection Trip 1
AUX2+AUX2-
Protection Trip 2
PS -
Low pressure to
block closing
Low pressure to
blocking tripping
Low pressure to
block tripping and
closing
Low pressure to
block AR
52b
52a
52a
Closed state
supervision
Figure 3.9-1 Principle of control circuit module with double tripping coils
The rear terminals of control circuit module with double tripping coils (card A) are shown in the
following table.
Pin No. Sign Description
01 Pwr+_1 Positive pole of power supply for 1st tripping coil
02~04 SHKKJ-1 Binary output 1 of post closing position
03 Pwr+_2 Positive pole of power supply for 2nd tripping coil
05 In_ManCls Input of manual closing
14~06 STKKJ-1 Binary output 1 of post tripping position
07 In_ManTrp Input of manual tripping
3 Operation Theory
CJX Interposing Relay Set 24
Date: 2012-03-29
14~08 STJ Binary output of manual tripping
09 In_AR Input of automatic reclosure
14~10 TYJ2 Binary output 2 of low pressure to block tripping circuit breaker
11 CC To closing coil
14~12 HYJ2 Binary output 2 of low pressure to block closing circuit breaker
13 In_ProtTrp_1 Input 1 of protection tripping
14 Common_1 Common terminal 1
15 TC_1 To tripping coil 1
16 Blank Not used
17 In_ProtTrp_2 Input 2 of protection tripping
18 In_LowPres_Trp Input of low pressure to block tripping circuit breaker
19 TC_2 To tripping coil 1
20 In_LowPres_Trp&Cls Input of low pressure to block tripping and closing circuit breaker
21 Pres_Pwr- Negative pole of power supply for pressure blocking circuit
22 In_LowPres_Cls Input of low pressure to block closing circuit breaker
23 Common_2 Common terminal 2
23~24 HYJ1 Binary output 1 of low pressure to block closing circuit breaker
23~25 SHKKJ-2 Binary output 2 of post closing position
23~26 TYJ1 Binary output 1 of low pressure to block tripping circuit breaker
23~27 STKKJ-2 Binary output 2 of post tripping position
28 Blank Not used
29 Pwr-_1 Negative pole of power supply for 1st tripping coil
30 Blank Not used
The rear terminals of control circuit module with double tripping coils (card B) are shown in the
following table.
Pin No. Sign Description
01 Pwr+_2 Positive pole of power supply for 2st tripping coil
02 Pwr+_1 Positive pole of power supply for 1nd tripping coil
03 Common_1 Common terminal 1
04 Common_2 Common terminal 2
05 Common_3 Common terminal 3
06~23 TWJ1-1 Binary output 1 of open position relay 1
07~24 HWJ1-1 Binary output 1 of closed position relay 1
08~25 HWJ4-1 Binary output 1 of closed position relay 4
09~26 TWJ2-1 Binary output 1 of open position relay 2
10~27 HWJ2-1 Binary output 1 of closed position relay 2
11~28 HWJ5-1 Binary output 1 of closed position relay 5
12 Blank Not used
13 52a_Pwr-_2 Negative pole of power supply for closed position relay of 2nd tripping coil
03~14 TWJ1-2 Binary output 2 of open position relay 1
03~15 HWJ1-2 Binary output 2 of closed position relay 1
03~16 HWJ4-2 Binary output 2 of closed position relay 4
3 Operation Theory
CJX Interposing Relay Set 25
Date: 2012-03-29
04~17 TWJ2-2 Binary output 2 of closed position relay 2
04~18 HWJ5-2 Binary output 2 of closed position relay 5
19 Blank Not used
20 Blank Not used
05~21 BO_TCCS_1 Binary output of control circuit failure of 1st tripping coil
05~22 BO_TCCS_2 Binary output of control circuit failure of 2nd tripping coil
29 52a_Pwr-_1 Negative pole of power supply for closed position relay of 1st tripping coil
30 TWJ- Negative pole of power supply for open position relay
The rear terminals of control circuit module with double tripping coils (card C) are shown in the
following table.
Pin No. Sign Description
01 AR_Pres_Pwr+ Positive pole of power supply for low pressure blocking AR
02 Pwr+_1 Positive pole of power supply for 1st tripping coil
03 AR_Pres_Pwr - Negative pole of power supply for low pressure blocking AR
04 Pwr+_2 Positive pole of power supply for 2nd tripping coil
05~07 CHYJ1-1 Binary output 1 of the relay 1 of low pressure to block AR (normally closed
contact)
06 Pwr+_3 Positive pole of power supply for 3rd tripping coil
08 Pwr-_1 Negative pole of power supply for 1st tripping coil
09~11 CHYJ2-1 Binary output 1 of the
relay 2 of low pressure to block AR (normally closed
contact)
10 Pwr-_2 Negative pole of power supply for 2nd tripping coil
12 Pwr-_3 Negative pole of power supply for 3rd tripping coil
13~15 CHYJ1-2 Binary output 2 of the
relay 1 of low pressure to block AR (normally open
contact)
14~16 3JJ-1 Binary output 1 of power supply switch 3 (normally closed contact)
17~19 CHYJ2-2 Binary output 2 of the
relay 2 of low pressure to block AR (normally open
contact)
18~20 4JJ-1 Binary output 1 of power supply switch 4 (normally closed contact)
21 Blank
22~24 3JJ-2 Binary output 2 of power supply switch 3 (normally open contact)
23 Blank Not used
25 Blank Not used
26~28 4JJ-2 Binary output 2 of power supply switch 4 (normally open contact)
27 Blank Not used
29 Blank Not used
30 Blank Not used
The low-pressure supervision circuit is commonly used by the two control circuits, so it is powered
by either of the power supplies via switchover circuit. If auxiliary power 1 is normal, and then it will
be used for low-pressure supervision, while if it fails, auxiliary power 2 will take the place. The
switchover is achieved via contacts of 1JJ and 2JJ.
3 Operation Theory
CJX Interposing Relay Set 26
Date: 2012-03-29
3.9.2 Circuit Breaker Open State Supervision
The auxiliary relays TWJ1, TWJ2 and TWJ3 are applied to supervise the open state of Circuit
breaker when terminal nB30 is connected to the negative pole of power supply in series with
normal closed auxiliary contact of circuit breaker (52b).
In addition, if terminal nB30 is connected with normal closed auxiliary contact of circuit breaker
(52b) and its close coil (CC), as dashed line between nB30 and nA11 shows in Figure 3.9-1, TWJ1,
TWJ2 and TWJ3 can provide supervision on close coil (CC) as well.
Indicator L1 in green shows the open state of circuit breaker, and it can be seen on the faceplate
with designation 52b.
3.9.3 Closing Circuit
Auto reclosing signal comes from terminal nA9, while manual closing signal comes from nA5.
Terminal nA11 shall be connected to close coil (CC) in series with normal closed auxiliary contact
of circuit breaker (52b).
HBJ is a seal-in auxiliary relay, which pickup current is adaptive to the closing current in the range
of 0.5A-4A. If the closing current is greater than 4A, an additional resistor-R1 can be added. (See
section 3.2.3 about closing circuit with latching)
TBJV is the anti-pump relay; please refer to secion 3.9.6 for details. This function can be released
by shortening S2 to bypass the normal closed contacts of TBJV.
Low pressure blocking function for manual closing is achieved by normal closed contact of HYJ1
and HYJ2; please refer to section 3.9.10 for details. This function can be released by shortening
S1 to bypass the normal closed contact of HYJ1 and HYJ2.
3.9.4 Trip Circuit 1
Protection trip signal comes from terminal nA13, while manual trip signal comes from nA7. The
relay STJ in manual trip circuit provides multiplicated contacts for trip circuit 2, please refer to
section 3.9.9.
Terminal nA15 shall be connected to trip coil (TC1) in series with normal open auxiliary contact of
circuit breaker (52a).
TBJ1 is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of
0.5A-4A. If the trip current is greater than 4A, an additional resistor-R0 can be added. TBJ1 is also
used in anti-pump circuit, please refer to section 3.9.6. (See section 3.2.4 about tripping circuit
with latching)
Low pressure blocking function for trip is achieved by normal closed contact of TYJ1; please refer
to section 3.9.10 for details. This function can be released by shortening S4 to bypass the normal
closed contact of TYJ1.
3.9.5 SHKKJ and STKKJ
SHKKJ and STKKJ are bistable auxiliary relays. When circuit breaker is closed manually, the relay
3 Operation Theory
CJX Interposing Relay Set 27
Date: 2012-03-29
SHKKJ will pick up and latch and STKKY will reset. When circuit breaker is tripped manually, the
relay SHKKJ will reset and STKKJ will operate and latch. The normal open contact of SHKKJ can
be used together with normal closed auxiliary contact of circuit breaker (52b), to initiate
auto-reclosure in case that circuit breaker trips especially without any trip commands from
protection and manual switch.
3.9.6 Anti-pump
Anti-pump function is achieved via auxiliary relay TBJV.
In the event that a breaker is closed into a fault, while the operator is applying a close signal via a
closed control switch, the circuit breaker will trip and prevent closing again until the closing circuit
has been de-energized by the operator's releasing the control switch.
When trip signal comes and at the same time close signal persists, the contact of TBJ1 and/or
TBJ2 will close and TBJV will operate and keep sealed with its own normal open contact. The
normal closed contacts of TBJV will cut off closing circuit to prevent any further closing.
If there is anti-pump circuit in circuit breaker itself, the anti-pump function of this relay set can be
released by shortening S2 to bypass the normal closed contacts of TBJV.
3.9.7 Circuit Breaker Closed State Supervision circuit 1
This supervision circuit is associated with the trip coil 1.
The auxiliary relays HWJ1, HWJ2 and HWJ3 are applied to supervise the closed state of circuit
breaker when terminal nB29 is connected to the negative pole of power supply in series with
normal open auxiliary contact of circuit breaker (52a).
In addition, if terminal nB29 is connected to normal open auxiliary contact of circuit breaker (52a)
and its trip coil (TC1), as dashed line between nB29 and nA15 shows in the Figure 3.9-1, HWJ1,
HWJ2 and HWJ3 can provide supervision on trip coil as well.
Indicator L2 in red shows the closed state of circuit breaker, and it can be seen on the faceplate
with designation 52a-1.
3.9.8 Circuit Breaker Closed State Supervision circuit 2
This supervision circuit is associated with the trip coil 2.
The auxiliary relays HWJ4, HWJ5 and HWJ6 are applied to supervise the closed state of circuit
breaker when terminal nB13 is connected to the negative pole of power supply in series with
normal open auxiliary contact of circuit breaker (52a).
In addition, if terminal nB13 is connected to normal open auxiliary contact of circuit breaker (52a)
and its trip coil (TC2), as dashed line between nB13 and nA19 shows in the Figure 3.9-1, HWJ4,
HWJ5 and HWJ6 can provide supervision on trip coil as well.
Indicator L3 in red shows the closed state of circuit breaker, and it can be seen on the faceplate
with designation 52a-2.
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CJX Interposing Relay Set 28
Date: 2012-03-29
3.9.9 Trip Circuit 2
Protection trip signal comes from terminal nA17, while manual trip signal comes from multiplicated
contact of STJ, please refer to section 3.9.4.
Terminal nA19 shall be connected to trip coil (TC2) in series with normal open auxiliary contact of
circuit breaker (52a).
TBJ2 is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of
0.5A-4A. If the trip current is greater than 4A, an additional resistor-R2 can be added. TBJ2 is also
used in anti-pump circuit, please refer to section 3.9.6. (See section 3.2.4 about tripping circuit
with latching)
Low pressure blocking function for trip is achieved by normal closed contact of TYJ2; please refer
to section 3.9.10 for details. This function can be released by shortening S3 to bypass the normal
closed contact of TYJ2.
3.9.10 Pressure Supervision
Four levels of pressure are provided: Low pressure to inhibit auto-closing from terminal nC1, Low
pressure to inhibit closing from terminal nA22, low pressure to inhibit trip from terminal nA18, and
low pressure to inhibit switching (both closing and trip) from nA20. The normal closed contacts of
CHYJ1 and CHHYJ2 are provided to inhibit auto-reclosing, the normal closed contacts of HYJ1
and HYJ2 are put in manual closing circuit, while the normal closed contacts of TYJ1 and TYJ2 are
put in trip circuit.
3.9.11 Spare Contacts
Some spare contacts are provided for further applications, as shown in Figure 3.9-2.
TWJ3 HWJ3
HWJ6nB5 nB21
nB22
nC14 nC16
nC22
3JJ
nC243JJ
nC18 nC20
nC26
4JJ
nC284JJ
nC5 nC7
nC13
CHYJ1
nC15CHYJ1
nC9 nC11
nC17
CHYJ2
nC19CHYJ2
nA2 nA4SHKKJ
nA14 nA6STKKJ
nA8
nA10
nA12
STJ
TYJ2
HYJ2
nA23 nA25SHKKJ
nA27
nA24
nA26
STKKJ
HYJ1
TYJ1
nB6 nB23TWJ1
nB9 nB26TWJ2
nB4 nB17TWJ2
HWJ2 HWJ5nB18
nB3 nB14TWJ1
nB15
nB16
HWJ1
HWJ4
nB7 nB24HWJ1
nB8 nB25HWJ4
nB10 nB27HWJ2
nB11 nB28HWJ5
Figure 3.9-2 Output contacts of control circuit with double tripping coils
3 Operation Theory
CJX Interposing Relay Set 29
Date: 2012-03-29
3.10 Voltage Parallel Module
The principle and output contact output for voltage parallel module is shown in Figure 3.10-1.
This module is used to the parallel connection to various voltage circuits. For double busbar
arrangement, if one bus VT of both is out of service, then the signals of protection and
measurement of voltage of all feeders connected with this bus shall use another bus VT (two
buses shall operate in parallel).
If parallel input circuit is latching circuit (such as most manual parallel), then connect the parallel
connecting input contact between positive pole and n1 terminal of DC power supply.
If parallel input circuit is not latching circuit (such as remote parallel, separation), then connect the
parallel and separation input contacts between n3 and n4 terminals of DC power supply
respectively.
N2 and n5 terminals are connected with the positive and negative poles of power supply
respectively.
When the parallel circuit operates, the indicator LED LD1 will be normally lit (red).
D2
n1
D1
R7R8J1 J2
n2
D3
R5R6
J3
J5
n3 R3R4
J4 J6
D8
n4
D7
J7
R1R2
n5
n7n8
n10
n12
n9
n11
n14 n13
n19n20
n22
n24
n21
n23
J3 J6
J3 J6
J2 J5
J2
n15n16
n18 n17
n25n26
n28
n30
n27
n29
J1
J5
J1
J4
J4
D5D4 D6
LD1
R9
D9J7
J7
Pwr-
Pwr+
Local paralleling
Remote paralleling
Remote separation
Figure 3.10-1 Principle and output contact of voltage parallel module
The rear terminals of voltage parallel module are shown in the following table.
Pin No. Sign Description
01 LocalParalle Local paralleling signal input
02 Pwr+ Positive pole of power supply for voltage parallel module
03 RemoteParalle Remote paralleling signal input
04 RemoteSeparate Remote separating signal input
05 Pwr- Negative pole of power supply for voltage parallel module
06 Blank
3 Operation Theory
CJX Interposing Relay Set 30
Date: 2012-03-29
07~08 J3-1 Normally open contact 1 of the J3 relay
09~10 J3-2 Normally open contact 2 of the J3 relay
11~12 J2-1 Normally open contact 1 of the J2 relay
13~14 J2-2 Normally open contact 2 of the J2 relay
15~16 J1-1 Normally open contact 1 of the J1 relay
17~18 J1-2 Normally open contact 2 of the J1 relay
19~20 J6-1 Normally open contact 1 of the J6 relay
21~22 J6-2 Normally open contact 2 of the J6 relay
23~24 J5-1 Normally open contact 1 of the J5 relay
25~26 J5-2 Normally open contact 2 of the J5 relay
27~28 J4-1 Normally closed contact 1 of the J4 relay
29~30 J4-2 Normally open contact 2 of the J4 relay
4 Hardware
CJX Interposing Relay Set 31
Date: 2012-03-29
4 Hardware
4.1 Overview
All CJX series devices have 14 slots, different types of CJX device is assembled by different
modules combined with different integral panel.
4.1.1 CJX-01
F E C B A 9 8 7 6 5 4 3 2 1
52b
52a
52b
52a
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
52b
52a
52b
52a
Figure 4.1-1 CJX-01 panel layout
CJX-01 can be equipped with four control circuit modules (single tripping coil) and four voltage
switch modules (with latch or without latch) at most, Figure 4.1-1 shows the front view layout of
panel, 6-9 slots are control circuit modules, B~F slots are voltage switchover modules. Definitions
of indicators on panel are as follows:
ON BB1 and ON BB2 indicators are green, provided by voltage switchover module, used to
indicate the current position of bus.
52b: indicator is red and 52a: indicator is red, provided by control circuit module, used to
indicate the current state of circuit breaker.
When the slot is not inserted by module, the corresponding indicator on panel is blank. Other blank
module slots can adopt modules without indicator on demand, such as seal-in module or repeat
relay module, and etc. (the same as below).
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Date: 2012-03-29
4.1.2 CJX-02
F E C B A 9 8 7 6 5 4 3 2 1
LOCKOUT LOCKOUT LOCKOUTLOCKOUT LOCKOUT LOCKOUT LOCKOUTLOCKOUT
Figure 4.1-2 CJX-02 panel layout
CJX-02 can be equipped with eight LOCKOUT modules in 7-F slots. Figure 4.1-2 shows the front
view layout of the panel. The LOCKOUT indicator on the panel is red, provided by LOCKOUT
module, and is lit when LOCKOUT circuit acts, and is extinguished when it is restored.
4.1.3 CJX-03
F E C B A 9 8 7 6 5 4 3 2 1
Figure 4.1-3 CJX-03 panel layout
CJX-03 has several options of some seal-in modules or repeat relay modules, the specific
configuration is determined according to the actual demand.
Figure 4.1-3 shows the front view layout of the panel, without indicators.
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4.1.4 CJX-04
PARAL PARAL PARALON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
ON BB1
ON BB2
F E C B A 9 8 7 6 5 4 3 2 1
Figure 4.1-4 CJX-04 panel layout
CJX-04 can be equipped with three voltage parallel modules in 2~4 slots, and equipped with ten
voltage switchover modules in 5~F slots. Figure 4.1-4 is the front view layout of the panel, and
definitions of indicators on the panel are as follows:
ON BB1 and ON BB2 indicators are red, provided by voltage switchover modules, used to
indicate the current position of bus.
PARAL indicator is red, provided by voltage parallel modules, is lit when they are operated in
parallel, and extinguished when they are running separately.
4.1.5 CJX-11
F E C B A 9 8 7 6 5 4 3 2 1
52b
52a
52b
52a
ON BB1
ON BB2
ON BB1
ON BB2
Figure 4.1-5 CJX-11 panel layout
CJX-11 is fixed in 8 and 9 slots, equipped with two control circuit modules, and equipped with two
voltage switch modules in E and F slots.
Figure 4.1-5 is the front view layout of the device, definitions of indicators on the panel are as
follows:
ON BB1 and ON BB2 indicators are red, provided by voltage switchover module, used to
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CJX Interposing Relay Set 34
Date: 2012-03-29
indicate the current position of bus.
52b indicator is red, 52a indicator is green, provided by control circuit, used to indicate the
current state of circuit breaker.
4.1.6 CJX-21
F E C B A 9 8 7 6 5 4 3 2 1
52a_2
52b
52a_1
ON BB1
ON BB2
ON BB1
ON BB2
Figure 4.1-6 CJX-21 panel layout
CJX-21 is fixed at 9, A and B slots, equipped with a set of control circuit module with double
tripping coils and DC power supply switchover (card A, card B, card C), equipped with two voltage
switch modules in E and F slots.
Figure 4.1-6 shows the front view layout of the panel, definitions of indicators on the panel are as
follows:
ON BB1 and ON BB2 indicators are green, provided by voltage switchover modules, used to
indicate the current position of bus.
52b indicator is red, 52a_1 and 52a_2 indicators are green, provided by control circuit module
with double tripping coil, used to indicate the current state of circuit breaker.
5 Installation and Commissioning
CJX Interposing Relay Set 35
Date: 2012-03-29
5 Installation and Commissioning
5.1 Introduction
The chapter contains instructions on how to install and commission the protective device. It can
also be used as a reference if a periodic test is performed. The chapter covers procedures for
mechanical and electrical installation, energizing and checking of external circuitry, setting and
configuration as well as verifying settings and performing a directionality test.
The chapter contains the following information:
1. The Safety information presents warning and note signs, which the user should draw
attention to.
2. The Overview gives an overview over the major task when installing and commissioning the
protection equipment.
3. The Unpacking and checking the protective device contains instructions on how to receive
the protection equipment.
4. The Installing the protective device contains instructions on how to install the protection
equipment.
5. The Checking the external circuitry contains instructions on how to check that the protection
equipment is properly connected to the protection system.
The chapter is addressing the installation, commissioning and maintenance personnel responsible
for taking the protection into normal service and out of service. The installation personnel must
have a basic knowledge in handling electronic equipment. The commissioning and maintenance
personnel must be well experienced in using protection equipment, test equipment, protection
functions and the configured functional logics in the protection.
5.2 Safety Information
This section contains safety information. Warning signs are presented which attend the user to be
careful during certain operations in order to avoid human injuries or damage to equipment.
Warning signs
Warning!
Strictly follow the company and country safety regulations. Working in a high voltage
environment requires serious approach to avoid human injuries and damage to equipment.
Do not touch circuitry during operation. Potentially lethal voltages and currents are
present.
Always avoid touching the circuitry when the cover is removed. The product contains
electronic circuitries which can be damaged if exposed to static electricity (ESD). The
5 Installation and Commissioning
CJX Interposing Relay Set 36
Date: 2012-03-29
electronic circuitries also contain high voltage which is lethal to humans.
Always use suitable isolated test pins when measuring signals in open circuitry. Potentially
lethal voltages and currents are present.
Never connect or disconnect a wire and/or a connector to or from a protective device
during normal operation. Hazardous voltages and currents are present that may be lethal.
Operation may be disrupted and protection equipment and measuring circuitry may be
damaged.
Always connect the protection equipment to protective ground, regardless of the operating
conditions. This also applies to special occasions such as bench testing, demonstrations
and off-site configuration. Operating the protection eq