Circuit Breaker
Indoor High Voltage VCB
ZN63(VS1)-24 series handcart type indoor vacuum circuit breaker is rated voltage 24kV, three-phase AC 50Hz indoor high-voltage switchgear, apply for power stations, substations...ZN63(VS1)-24 indoor high voltage vacuum circuit breaker
ZN63(VS1)-24 series handcart type indoor vacuum circuit breaker is rated voltage 24kV, three-phase AC 50Hz indoor high-voltage switchgear, apply for power stations, substations, and industrial and mining enterprises to control or protection transmission and distribution systems, specially for the important high altitude breaking load and frequent operation place.
Circuit breaker manufacturing accordance with our national standard GB1984-2003 "AC high voltage circuit breakers", DL/T403-2000 "3.6~40.5kV indoor vacuum circuit breaker ordering technology"; and the related IEC standards and reliable interlock function.
Circuit breaker operating mechanism for the spring energy storage type, can use AC and DC energy storage operations, can also be used manually.
Circuit breaker can be equipped with long life permanent magnetic actuator, mechanical life can reached 60000times, can be used for extremely frequent operation place.
Circuit breaker designed to repackage the structure before and after, both can be used as a fixed installation unit, can also be equipped with the chassis as used in the mounted unit.
The Use of Environmental Conditions
1.Ambient Temperature: not higher than +40°C, not less than -15°C.
2.Altitude: not exceed 1000m.
3.Relative Humidity: daily average of not more than 95%, month average of not more than 90%.
4.Earthquake Intensity: not more than 8.
5.No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.
6.Specifications
|
No |
Item |
Unit |
Data |
|||
|
1 |
Rated voltage |
kV |
24 |
|||
|
2 |
Max working voltage |
kV |
24 |
|||
|
3 |
Rated current |
A |
630,1000,1250 |
1250,1600,2000,2500 |
1250,1600,2000,3150 |
|
|
4 |
Rated short-circuit opening current |
kA |
20/25 |
31.5 |
40 |
|
|
5 |
Rated short-circuit closing current |
kA |
50/63 |
80 |
100 |
|
|
6 |
Rated peak withstand current |
kA |
50/63 |
80 |
100 |
|
|
7 |
4s rated short-time withstand current |
kA |
20 |
31.5 |
40 |
|
|
8 |
Rated |
Power frequency withstand voltage |
kV |
42(fracture 48) |
||
|
Impulse withstand voltage |
kV |
75(fracture 85) |
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|
9 |
Rated operating sequence |
O-0.3 s-C&O-180s-C&O |
||||
|
10 |
Mechanical life endurance |
time |
10000 |
|||
|
11 |
Rated short-circuit opening current frequency |
time |
50 |
|||
|
12 |
Rated closing voltage of operating mechanism(DC) |
V |
110,220 |
|||
|
13 |
Rated closing voltage of operating mechanism(DC) |
V |
110,220 |
|||
|
14 |
Open contact clearance |
mm |
11±1 |
|||
|
15 |
Super stroke(compressed length of contact springs) |
mm |
3.5 ± 0.5 |
|||
|
16 |
Time differential among phases for opening and closing |
ms |
≤2 |
|||
|
17 |
Bounce time of closing contacts |
ms |
≤2 |
|||
|
18 |
Average opening speed |
ms |
0.9~1.2 |
|||
|
19 |
Average closing speed |
ms |
0.5~0.8 |
|||
|
20 |
Opening time |
ms |
≤50 |
|||
|
21 |
Closing time |
ms |
≤100 |
|||
|
22 |
Main loop resistance of each phase |
μΩ |
≤50 (630A)≤45(1250A)≤35(1600-2000A)≤25(2500A以上) |
|||
|
23 |
Allowed accumulative wearing thickness of static&Moving contact |
mm |
3 |
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24 hours at your service:
