China ZN63A(VS1)-12 vacuum circuit breaker,ZN63A(VS1)-12 vacuum circuit breaker Manufacturer
Operating Mechanism
(15)
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ZN63A(VS1)-12 series indoor vacuum circuit breaker is used for indoor 12kv switchgear, to control and protect transmissiom and distribution system electrical network equipment and industrial & mining industry ,etc.
Main Technical Specification
S.N |
Name | Unit | Data | ||||
| 1 |
Rated voltage |
kV | 12 | ||||
| 2 |
Rated frequency |
Hz | 50/60 | ||||
| 3 |
Rated current |
A | 630 1000 1250 |
630 1000 1250 |
1250 1600 2000 |
1600 2000 2500 3150 |
|
| 4 |
Rated short circuit breaking current |
kA | 20 | 25 | 31.5 | 40 | |
| 5 |
Rated peak withstand current |
kA | 50 | 63 | 80 | 100 | |
| 6 |
Rated short-circuit duration |
S | 4 | ||||
| 7 |
Rated power frequency withstand voltage |
Between phases, phase to ground |
kV | 42/1min | |||
|
Between gaps |
kV | 48/1min | |||||
| 8 |
Rated lightning impulse withstand voltage |
Between phases, phase to ground |
kV | 75 | |||
|
Between gaps |
85 | ||||||
| 9 |
Rated operating sequence |
0-0.3s-CO-180s-CO/0-180s-CO-180s-CO(40kA) | |||||
| 10 |
power source voltage of opening and closing circuit |
V | -220/-110;-220/110 | ||||
| 11 |
Rated current of opening and closing coil |
A | -220/1.11;-110/2.75 | ||||
| 12 |
Rated breaking current of single capacitor bank |
A | 630 | ||||
| 13 |
Rated breaking current of back to back capacitor bank |
A | 400 | ||||
| 14 |
Electrical endurance class |
Class E2 (30cycles) | |||||
| 15 |
Mechanical endurance |
Cycle | (class M2)60000 | ||||
| 16 |
Clearance between open contacts |
mm | 11±1 | ||||
| 17 |
Contact stroke of contacts |
mm | 3.5±0.5 | ||||
| 18 |
Out of simultaneity of CO operations of three poles |
ms | ≤2 | ||||
| 19 | Contact bouncing duration at closing operation | ms | ≤2/≤3(40kA) | ||||
| 20 |
Closing time |
ms | 35-70 | ||||
| 21 |
Opening time |
ms | 20-50 | ||||
| 22 |
Average closing speed |
m/s | 0.6±0.2 | ||||
| 23 |
Average opening speed |
m/s | 1.1±0.2 | ||||
| 24 |
Main circuit resistance of each pole |
μΩ | ≤50(630A) ≤45(1250A) ≤35(1600-2000A)≤ (above 2500) |
||||
