ZN63A-12(VS1) indoor high-voltage vacuum circuit breaker
The ZN63A-12(VS1) type indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 12kV. It can be used for control and protection of electrical facilities in factories, mines, enterprises, power plants, and substations.
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ZN63A-12(VS1) indoor high-voltage vacuum circuit breaker
- Product details
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- Commodity name: ZN63A-12(VS1) indoor high-voltage vacuum circuit breaker
The ZN63A-12(VS1) type indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 12kV. It can be used for control and protection of electrical facilities in factories, mines, enterprises, power plants, and substations.
Product Overview
The ZN63A-12(VS1) indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 12kV. It can be used for control and protection of electrical facilities in factories, enterprises, power plants, and substations. The ZN63A-12 indoor high-voltage vacuum circuit breaker can be installed in both trolley-type switchgear and fixed switchgear. This circuit breaker has advantages such as long life, simple maintenance, no pollution, no explosion hazard, and low noise. The operating mechanism is spring-energy storage type, which can be operated by AC or manually; and it is suitable for harsh working conditions such as frequent operation.
Working Principle
The energy required for the circuit breaker to close is supplied by the spring energy storage mechanism. The energy storage mechanism can be driven by an external power supply motor or manually. After energy storage is complete, the energy storage indicator shows "Energy Stored". At the same time, the energy storage switching switch cuts off the power supply of the energy storage motor, and the circuit breaker is in the ready-to-close state. During the closing operation, whether the "Close" button is pressed manually or the closing electromagnet is activated by remote operation, the circuit breaker can be closed. After the closing operation is completed, the energy storage indicator and energy storage switching switch reset, the motor power is turned on, and the motor stores energy again. The closing indicator shows "Closed", and the auxiliary switch contacts are switched. During the tripping operation, whether the "Trip" button is pressed manually or the closing electromagnet is activated by remote operation, the circuit breaker can be tripped. After the tripping operation is completed, the tripping indicator shows "Tripped", and the auxiliary switch contacts are switched. At the same time, during the tripping operation, the counter automatically advances one position, and the corresponding number can be seen from the panel viewing window.
Serial Number
Name
Unit
Value
1
Rated Voltage
KV
12
2
Rated Insulation Level
1min Power Frequency Withstand Voltage
KV
42
Impulse Withstand Voltage
75
3
Rated Current
A
60
120
12501600
20002500
1250160020002500315040004000
5000
4
Rated Short-Circuit Breaking Current
kA
20
25
31.5
40
50
5
Rated Short-Circuit Making Current (Peak)
50
63
80
100
130
6
Rated Dynamic Stability Current (Peak)
50
63
80
100
130
7
Rated Thermal Stability Current (RMS)
20
25
31.5
40
50
8
Rated Short-Circuit Breaking
Current Breaking Times
31.5kA
Times
50
40kA
30
50KA
20
9
Rated Thermal Stability Time
s
4
10
Rated Operating Sequence
Trip-0.3s-Close-Trip-180s-Close-Trip
Trip-180s-Close-Trip-180s-Close-Trip
11
Mechanical Life
31.5kA
Times
30000
40kA
20000
50KA
10000
12
Rated Single Capacitor Group Breaking Current
A
630
13
Rated Back-to-Back Capacitor Group Breaking Current
A
400
14
Operating Mechanism Rated Closing/Tripping Voltage (DC)
V
100/200
15
Three-Phase Trip/Close Asynchronism
ms
≤2
16
Contact Closing Bounce Time
ms
≤2
17
Average Tripping Speed
m/s
0.91.2
18
Average Closing Speed
m/s
0.40.8
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