instruction manual trip circuit supervision relay gkad1

6 F 2 S 0 7 9 2
INSTRUCTION MANUAL
TRIP CIRCUIT SUPERVISION RELAY
GKAD1
© TOSHIBA Corporation 2004
All Rights Reserved.
( Ver. 1.6 )
6 F 2 S 0 7 9 2
Safety Precautions
Before using this product, please read this chapter carefully.
This chapter describes the safety precautions recommended when using the GKAD1. Before
installing and using the equipment, this chapter must be thoroughly read and understood.
Explanation of symbols used
Signal words such as DANGER, WARNING, and two kinds of CAUTION, will be followed by
important safety information that must be carefully reviewed.
DANGER
Indicates an imminently hazardous situation which will result in death or
serious injury if you do not follow the instructions.
WARNING
Indicates a potentially hazardous situation which could result in death or
serious injury if you do not follow the instructions.
CAUTION
Indicates a potentially hazardous situation which if not avoided, may result in
minor injury or moderate injury.
CAUTION
Indicates a potentially hazardous situation which if not avoided, may result in
property damage.
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WARNING
• Exposed terminals
Do not touch the 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 approximately 30 seconds for the voltage to discharge.
CAUTION
• Operating environment
The equipment must only used within the range of ambient temperature, humidity and dust
detailed in the specification and in an environment free of abnormal vibration.
• Ratings
Before applying DC voltage to the equipment, check that they conform to the equipment ratings.
• Connection cable
Carefully handle the connection cable without applying excessive force.
• Unit
Do not disassemble the unit, as this may cause the unit to be damaged.
• Modification
Do not modify this equipment, as this may cause the equipment to malfunction.
• Disposal
When disposing of this equipment, do so in a safe manner according to local regulations.
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Contents
Safety Precautions
1
1.
Introduction
4
2.
Application and Function
5
2.1
2.2
2.3
5
5
7
Application
Function
Connections
3.
Hardware Structure
4.
Installation
10
4.1
4.2
4.3
4.4
Receipt of Relays
Mounting
Electrostatic Discharge
Handling Precautions
10
10
10
10
Commissioning and Maintenance
11
General
5.2 Precautions
5.3 Preparation
5.4 Storage
11
11
11
11
5.
9
Appendix A
13
Outline Diagram
14
Appendix B
15
Technical Data
16
Appendix C
19
Ordering
20
„ The data given in this manual are subject to change without notice. (Ver.1.6)
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1. Introduction
The GKAD1 is a trip circuit supervision relay, and is provided the following features:
- Trip circuit supervision in both closed and open positions of circuit breaker
- Detection and alarm of trip circuit supply failure and of circuit breaker tripping
mechanism failure
- Single-phase or three-phase types available
- Compact size design
- Flush mounting
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2. Application and Function
2.1
Application
The GKAD1 is used for monitoring of the circuit breaker tripping circuit. The GKAD1 issues an
alarm if the GKAD1 detects trip circuit supply failure or circuit breaker tripping mechanism
failure.
The GKAD1 has two models as shown in Table 2.1.
Table 2.1
2.2
GKAD1 Models
Model
Configuration
GKAD1-12
Single-phase type
GKAD1-22
Three-phase type
Function
The GKAD1 monitors the circuit breaker tripping control, and Figure 2.1 shows a typical
scheme. When the trip circuit is complete, a small current flows in photo-couplers PC1 and/or
PC2, the circuit breaker auxiliary contacts and the trip coil. This current flows for both the
breaker open and closed conditions.
Trip circuit
(+)
GKAD1
Protection
relay
1 Resistor
3
Target Indicator
(Hand reset type)
PC1
D
PC2
2
≥1
1
4
t
0
0.4s
0
13
t
0.4s
14
15
52a
52b
16
17
CB coil
(−)
18
LCP & GIS
Figure 2.1 Trip Circuit Supervision Scheme (1)
If the trip circuit supply is lost or if a connection becomes open circuit then the GKAD1 issues a
trip circuit fail alarm and operates the target indicator. As for the sensitivity, the detection
voltage and detection current are 40V or less and 1.5mA or less.
Figure 2.2 shows the special application of GKAD1 relay. This scheme ensures that all trip
circuit wiring (tripping route) from the trip contact to the trip coil is supervised in either the
breaker closed or open condition. At CB closed condition, the monitoring current flows in
photo-coupler PC1. On the other hand, at CB open condition, the monitoring current flows in
photo-couplers PC1 and PC2 via tripping cable and CB auxiliary contact 52b. Under both CB
conditions, if tripping route/trip coil is disconnected, the monitoring current is interrupted and
both PC1 and PC2 are off and the GKAD1 issues alarm.
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Trip circuit
(+)
GKAD1
Protection
relay
Target Indicator
(Hand reset type)
PC1
1 Resistor
3
D
PC2
2
≥1
4
1
t
0
0.4s
0
13
t
0.4s
14
15
52a
52b
16
17
CB coil
(−)
18
LCP & GIS
Figure 2.2 Trip Circuit Supervision Scheme (2)
Output Contacts
The GKAD1 provides a normally close and two normally open contacts for the trip circuit fail
alarm and a normally close contact for power supply fail alarm. (See Figures 2.3 and 2.4.)
The detection sensitivity for power supply fail is less than 60V.
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2.3
Connections
The GKAD1 auxiliary supply input has a nominal 110/125Vdc rating or 220/250Vdc rating.
The typical application and connection diagrams are shown in Figures 2.3 and 2.4. Figure 2.3
shows a single-phase application for GKAD1-12 and Figure 2.4 shows a three-phase application
for GKAD1-22.
The two resistors on the PC1, PC3 and PC5 photo coupler circuits are added as shown in Figure
2.3 and 2.4 below in consideration of the fail-safe of relay failure. The resistors can function to
prevent unwanted tripping due to relay internal circuit failure under CB closed condition.
CAUTION
Do not connect anything to 5th-12th terminals in Figure 2.3. These are reserved in
GKAD1-12.
Trip circuit
(+)
GKAD1-12
Protection
relay
Target Indicator
(Hand reset type)
PC1
1 Resistor
3
13
D
2
PC2
≥1
1
4
t
0
0.4s
0
t
0.4s
14
15
52a
52b
5
6
7
8
9
10
11
12
CB coil
(−)
LCP & GIS
16
17
No connection
(reserved)
18
(Note)
The dotted line shows the scheme
(2) mentioned in Figure 2.2.
POWER SUPPLY FAIL
21
DC
SUPPLY
Figure 2.3
(+)
(-)
22
Voltage
Regulator
1
GKAD1-12 Typical Application Diagram
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20
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Trip circuit (A phase)
(+)
GKAD1-22
Monitor input circuit
PC1
Protection
relay
Target Indicator
(Hand reset type)
1 Resistor
A-phase
3
13
D
PC2
≥1
2
1
t
0 0
t
≥1
4
0.4s
0.4s
14
15
52a
52b
16
17
CB coil
(−)
18
LCP & GIS
(Note)
The dotted line shows the scheme
(2) mentioned in Figure 2.2.
Monitor input circuit
PC3
5
B-phase
7
Trip circuit (B phase)
6
PC4
≥1
1
8
t
0 0
0.4s
D
t
0.4s
Monitor input circuit
9
PC5
C-phase
11
Trip circuit (C phase)
10
≥1
PC6
1
t
0 0
0.4s
12
t
D
0.4s
19
DC
SUPPLY
(+)
(-)
21
22
Figure 2.4
POWER SUPPLY FAIL
Voltage
Regulator
1
GKAD1-22 Typical Application Diagram
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3. Hardware Structure
The Figure 3.1 shows a hardware structure of GKAD1. The GKAD1-12 is a single phase type
and has one target indicator.
TRIP CIRCUIT
SUPERVISION RELAY
POWER
TRIP CIRCUIT FAIL
A-PHASE
TARGET INDICATOR
B-PHASE
TARGET RESET LEVER
(Push it left to reset Target)
C-PHASE
Figure 3.1
Front View of GKAD1-22
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4. Installation
4.1
Receipt of Relays
On receiving the GKAD1 relays, carry out the acceptance inspection immediately. In particular,
check for damage during transportation, and if any is found, contact the vendor.
Always store the unit in a clean, dry environment.
4.2
Mounting
Refer to Appendix A for details of mechanical fixings.
4.3
Electrostatic Discharge
CAUTION
The printed circuit board (PCB) within the GKAD1 relay is not intended to be a removable
module. Do not remove the PCB from the unit case, since electronic components on the PCB are
very sensitive to electrostatic discharge. If it is absolutely essential to take the PCB out of the
case, do not touch the electronic components and terminals with your bare hands. Additionally,
always put the PCB in a conductive anti-static bag when storing it.
4.4
Handling Precautions
A person's normal movements can easily generate electrostatic potential of several thousand
volts. Discharge of these voltages into semiconductor devices when handling electronic circuits
can cause serious damage, which often may not be immediately apparent but the reliability of
the circuit will have been reduced.
The electronic circuits are completely safe from electrostatic discharge when housed in the case.
Do not expose them to risk of damage by removing the PCB unnecessarily.
The unit incorporates the highest practicable protection for its semiconductor devices. However,
if it becomes necessary to remove the PCB, precautions should be taken to preserve the high
reliability and long life for which the equipment has been designed and manufactured.
CAUTION
• Before removing the PCB, ensure that you are at the same electrostatic potential as the
equipment by touching the case.
• Handle only the edges of the PCB. Avoid touching the electronic components, PCB
surface or connectors.
• Do not pass the PCB to another person without first ensuring you are both at the same
electrostatic potential. Shaking hands achieves equipotential.
• Place the PCB on an anti-static surface, or on a conducting surface which is at the
same potential as yourself.
• Do not place the PCB in a polystyrene tray.
It is strongly recommended that detailed investigations on electronic circuitry should be carried
out in a Special Handling Area such as described in the IEC 60747.
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5. Commissioning and Maintenance
General
Test personnel must be familiar with general relay testing practices and safety precautions to
avoid personal injuries or equipment damage.
5.2
Precautions
CAUTION
• Ensure that the auxiliary supply connections are properly fixed to their terminals.
• Before turning on the power, check that the polarity and voltage of the power supply are
correct.
• Turn off the auxiliary supply before checking the interior of the relay.
• While the power is on, do not mount/dismount the PCB.
Failure to observe any of the precautions above may cause damage or malfunction of the relay.
Refer to section 4.4 for information on handling precautions.
5.3
Preparation
Test equipment
The following test equipment is required for the commissioning tests.
• DC power supply.
• Calibrated voltmeter.
Visual inspection
After unpacking the product, check for any damage to the case. If there is any damage, the
internal module might also have been affected. Contact the vendor.
Unit ratings
Check that the items described on the nameplate on the front of the unit conform to the user’s
specification. The items are: relay type and model, and auxiliary DC supply voltage rating.
5.4
Storage
The spare relay should be stored in a dry and clean room. Based on IEC Standard 60255-0 the
storage temperature should be −25°C to +70°C, but the temperature of 0°C to +40°C is
recommended for long-term storage.
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Appendix A
Outline Diagram
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Outline Diagram
Cover
TB: M3.5 Ring terminal
192
185
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
13.5
21
149
186 +0/−0.5
89
Terminal Block(TB) Arrangement
(Rear View)
83 +1.0/−0
Panel cut-out
GKAD1 Outline and Panel Cutout Diagram
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Appendix B
Technical Data
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Technical Data
Ratings
DC auxiliary supply:
110/125Vdc (Operative range: 88 - 150Vdc),
220/250Vdc (Operative range: 176 - 300Vdc)
Superimposed AC ripple on DC supply:
≤ 12%
DC supply interruption:
≤ 50ms at 110V
Function
Trip circuit supervision
Power supply fail
Detection voltage: 40V or less for 110V/125Vdc
70V or less for 220V/250Vdc
Detection current: 1.5mA or less for 110V/125Vdc
1.5mA or less for 220V/250Vdc
Detection voltage: less than 60V
Burden
DC auxiliary supply:
≤ 2.5W
Binary input circuit
≤ 0.5W per input at 110/125Vdc
(Current: ≤ 4mA at 110/125Vdc)
Output Contacts
Number
3: trip circuit fail alarm (2NO, 1NC)
1: power supply fail alarm
Make and carry: 4A continuously
Make and carry: 10A, 220Vdc for 0.5s (L/R=5ms)
Break: 0.1A, 220Vdc (L/R=40ms)
Make and carry: 10000 operations
Break: 100000 operations
Ratings:
Durability:
Mechanical Design
Weight
Case colour
Installation
1.5kg
Munsell No. N1.5
Flush mounting
Environmental Performance
Test
Standards
Atmospheric Environment
Details
Temperature
IEC60068-2-1/2
Humidity
IEC60068-2-3
56 days at 40°C and 93% relative humidity.
Enclosure
Protection
IEC60529
IP50
Operating range: -10°C to +55°C.
Storage / Transit: -25°C to +70°C.
Mechanical Environment
Vibration
IEC60255-21-1
Response - Class 1
Endurance - Class 1
Shock and Bump
IEC60255-21-2
Shock Response Class 1
Shock Withstand Class 1
Bump Class 1
Seismic
IEC60255-21-3
Class 1
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High Voltage Environment
Dielectric
Withstand
IEC60255-5
2kVrms for 1 minute between all terminals and earth.
2kVrms for 1 minute between independent circuits.
1kVrms for 1 minute across normally open contacts.
High Voltage Environment
High Voltage
Impulse
IEC60255-5
Three positive and three negative impulses of
5kV(peak), 1.2/50μs, 0.5J between all terminals and
between all terminals and earth.
Electromagnetic Environment
High Frequency
IEC60255-22-1 Class 3,
Disturbance /
IEC61000-4-12
Damped Oscillatory
Wave
1MHz 2.5kV applied to all ports in common mode.
1MHz 1.0kV applied to all ports in differential mode.
Electrostatic
Discharge
IEC60255-22-2 Class 3,
IEC61000-4-2
6kV contact discharge.
8kV air discharge.
Radiated RF
Electromagnetic
Disturbance
IEC60255-22-3 Class 3,
IEC61000-4-3
Field strength 10V/m for frequency sweeps of
80MHz to 1GHz and 1.7GHz to 2.2GHz. Additional
spot tests at 80, 160, 450, 900 and 1890MHz.
Fast Transient
Disturbance
IEC60255-22-4,
IEC61000-4-4
4kV, 2.5kHz, 5/50ns applied to all inputs.
Conducted RF
Electromagnetic
Disturbance
IEC60255-22-6,
IEC61000-4-6
10Vrms applied over frequency range 150kHz to
100MHz. Additional spot tests at 27 and 68MHz.
Conducted
Disturbance over
freq. Range 15Hz to
150kHz
IEC61000-4-16Class 3
Varying voltages applied in common mode as
follows:
15Hz to 150Hz: 10V → 1Vrms (20dB/decade)
150Hz to 1.5kHz: 1Vrms
1.5kHz to 15kHz: 1 → 10Vrms (20dB/decade)
15kHz to 150kHz: 10Vrms
Power Frequency
Disturbance
IEC60255-22-7
300V 50Hz for 10s applied to ports in common mode.
100V 50Hz for 10s applied to ports in differential
mode.
Surge Immunity
IEC61000-4-5
1.2/50μs surge in common/differential modes:
PSU and I/O ports: 2kV/1kV (peak)
Conducted and
Radiated Emissions
IEC60255-25
EN55022 Class A
Conducted emissions:
0.15 to 0.50MHz: <79dB (peak) or <66dB (mean)
0.50 to 30MHz: <73dB (peak) or <60dB (mean)
Radiated emissions:
30 to 230MHz: <30dB
230 to 1000MHz: <37dB
Power Frequency
Magnetic Field
IEC61000-4-8Class 4
Field applied at 50Hz with strengths of:
30A/m continuously,
300A/m for 1 second.
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Appendix C
Ordering
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Ordering
Trip Circuit Supervision Relay
Type:
Trip Circuit Supervision Relay
Model:
Single-phase type
Three-phase type
Monitored DC circuit voltage and DC auxiliary
supply rating:
110V/125V
220V/250V
GKAD1
GKAD1
12
22
11
22
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Version-up Records
Version
No.
Date
Revised Section
Contents
0.0
Feb. 20, 2004
--
First issue.
0.1
May 19, 2004
1.1
Feb. 17, 2005
1.2
Dec. 06, 2005
1.3
Jun. 05, 2006
1.4
Dec. 21, 2007
1.5
Nov. 11, 2008
1.6
Jun. 08, 2009
2.2
2.3
Appendix B
2.2
2.3
Appendix B
2.3 Connections
Appendix B
2.2
2.3
2.2
Appendices
2.2
Appendix B.
2.2
2.3
Modified the description. (Added the detection sensitivity of GKAD1.)
Added the CAUTION.
Added the detection sensitivity of GKAD1.
Modified the description (sensitivity) and Figures 2.1 and 2.2.
Modified Figures 2.3 and 2.4.
Modified the description.
Modified the description and Figures 2.3 and 2.4(resistor).
Added ‘Mechanical Design’.
Modified Figures 2.1 and 2.2.
Modified the description and Figures 2.3 and 2.4.
Modified the description.
Modified Appendix B and added ‘Appendix C Ordering’.
Modified the description. (detection sensitivity of power supply fail)
ditto
Modified Figures 2.1 and 2.2.
Modified Figures 2.3 and 2.4.
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