ZW32-12MF Series Outdoor Boundary Vacuum Circuit Breaker
ZW32-12MF series outdoor boundary Vacuum Circuit Breaker is the outdoor distribution equipment of rated voltage 12kV, three-phase AC 50/60HZ.
Description
Description
ZW32-12MF series outdoor boundary Vacuum Circuit Breaker is the outdoor distribution equipment of rated voltage 12kV, three-phase AC 50/60HZ. This VCB is mainly used in load current, overload current and short circuit current of power distribution lines opening and closing of electric power system.
The application of circuit breaker outdoor intelligent boundary vacuum circuit breaker on 12kV feeder overhead line can avoid the power failure of the fault-free line, reduce the power failure range, shorten the power outage time, and protect the safe operation of the main network. It can also has fault detection function, to protect control and communication function, which can realize automatic cut-off single phase ground fault and auto.isolation phase to phase short fault. The installation point uses the responsibility boundary point for the user incoming line of the 12kV distribution line, and can also be applied to the branch line connection that meets the requirements.
Environment condition
– Ambient temperature: max +40℃ min -40℃
– Altitude: ≤ 2000m
– Wind pressure: ≤ 700Pa (equals to wind speed 34m/s)
– Relative humidity: daily average relative humidity: ≤ 95%; monthly average relative humidity ≤ 90% – Air contamination degree: IV degree
– Earthquake intensity: ≤ 8 degree
– Not be contaminated by corrosive or flammable gas
– No frequent violent vibration or explosive place
Technical Data
| 1 | Rated Voltage | KV | 12 |
| 2 | Rated frequency | HZ | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated short circuit breaking current | KA | 20, 25 |
| 5 | Rated peak withstand current (peak value) | KA | 50, 63 |
| 6 | Rated short-time withstand current | KA | 20, 25 |
| 7 | Rated short circuit closing current (peak value) | KA | 50, 63 |
| 8 | Mechanical life | Times | 10000 |
| 9 | Rated short circuit breaking current times | Times | 30 |
| 10 | Power frequency withstand voltage(1min): (wet)(dry) same, earth / fracture | KV | 42/48 |
| 11 | Lightning impulse withstand voltage (peak value) same, earth / fracture | KV | 75/85 |
| 12 | Secondary circuit 1min power frequency withstand voltage | KV | 2 |
| 13 | Rated operating voltage and rated voltage of auxiliary loop | V | AC220, 110 DC220, 110 |
| 14 | Rated current of over-current tripper | A | 5 |
| 15 | Rated short-circuit duration | s | 4 |
| 16 | Contact open distance | mm | 9 ±1 |
| 17 | Contact Over-travel | mm | 2.5±0.5 |
| 18 | Average opening speed | m/s | 1.1±0.2 |
| 19 | Average closing speed | m/s | 0.6±0.2 |
| 20 | Three-pole simultaneity | ms | ≤5 |
| 21 | Three-pole simultaneity (assembled with isolator) | ms | ≤2 |
| 22 | Distance of charged body and relative air | mm | ≤2 |
| 23 | Loop DC resistance per phases | μΩ | ≤80 (with isolator≤150) |
Outline & Mounting Dimensions
Reviews
There are no reviews yet.