VS1-10kV(12kV) Handcart Type Indoor Vacuum Circuit Breaker
VS1(ZN63A)-10kV(12kV) Indoor Medium-voltage Vacuum Circuit Breaker, is designed for indoor switching equipment in 3-10kV AC 50Hz power systems. It serves as a protection and control unit for grid equipment and power devices in industrial and mining enterprises. Due to its advantages, this vacuum circuit breaker is especially suitable for locations requiring frequent operations under rated working current or multiple interruptions of short-circuit current. The VS1 model indoor medium-voltage vacuum circuit breaker features two types of operating mechanisms: a spring mechanism and a permanent magnet mechanism. It can be used as a fixed installation unit or paired with a specialized propulsion mechanism to form a handcart unit.
This vacuum circuit breaker is intended for indoor switching equipment in 10kV(12kV) power systems, serving as a protection and control unit for grid equipment and power devices in industrial and mining enterprises.
Suitable for applications requiring frequent operations at rated working current or multiple interruptions of short-circuit current.
The operating mechanism includes both spring and permanent magnet options, allowing it to function as a fixed installation unit or to be paired with a dedicated propulsion mechanism to create a truck unit.
|
No. |
Tech. parameters |
Unit |
Data |
||||
|
20KA |
25KA |
31.5KA |
40KA |
||||
|
1 |
Rated voltage |
KV |
12 |
||||
|
2 |
Maximum working voltage |
KV |
12 |
||||
|
3 |
Rated current |
A |
630-1250 |
630-1250 |
630-2000 |
1250-4000 |
|
|
4 |
Rated short circuit breaking current |
KA |
20 |
25 |
31.5 |
40 |
|
|
5 |
Rated short circuit making current |
KA |
50 |
63 |
80 |
100 |
|
|
6 |
Rated peak withstand current |
KA |
50 |
63 |
80 |
100 |
|
|
7 |
4S rated short circuit withstand current |
KA |
20 |
25 |
31.5 |
100 |
|
|
8 |
Rated insulation level |
Power-frequency withstand voltage (rated before and after breaking capacity) |
KV |
42(fracture 48) |
|||
|
Lightning impulse withstand voltage (before and after Yan Ding breaking) |
75(fracture 84) |
||||||
|
9 |
Rated operating sequence |
|
Minute-0.3s-Total minute-180s-Total minute |
||||
|
10 |
Mechanical life |
Times |
20000 |
||||
|
11 |
Rated short circuit breaking current breaking times |
Times |
50 |
||||
|
12 |
Rated closing voltage of operating machinery (DC) |
V |
AC/DC 110/220 |
||||
|
13 |
Rated opening voltage of operating machinery (DC) |
V |
AC/DC 110/220 |
||||
|
14 |
Clearance between open contacts |
mm |
11±1 |
||||
|
15 |
Overtravel (contact spring compression length) |
mm |
3.5±0.5 |
||||
|
16 |
Breaking and making asynchronism of three different phase |
ms |
≤2 |
||||
|
17 |
Contact closing bounce time |
ms |
≤2 |
||||
|
18 |
Average opening speed |
m/s |
0.9-1.2 |
||||
|
19 |
Average closing speed |
m/s |
0.5-0.8 |
||||
|
20 |
Breaking time |
ms |
20-60 |
||||
|
21 |
Making time |
ms |
≤70 |
||||
|
22 |
Main circuit resistance of each phase |
(μΩ) |
630≤50 1250≤45 |
1600-2500≤40 |
3150≤35 |
||
|
23 |
Allowable cumulative wear thickness of dynamic and static contacts |
mm |
30 |
||||
Environmental Conditions:
1. Ambient Temperature: +40℃ to -40℃.
2. Ambient Humidity: Daily average relative humidity ≤ 95%; daily average relative temperature < 90%; daily average vapor pressure ≤ 2.2 x 10³ MPa; monthly average vapor pressure ≤ 1.8 x 10 MPa.
3. Altitude: ≤ 2000 m.
4. Seismic Intensity: ≤ 8 degrees.
5. Usage Location: No dripping water, no flammable or explosive hazards, no chemically corrosive gases, and no severe vibrations.
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Tel：+86 15538537280
Email：lycnelectric@163.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province
