ZW32-12 Outdoor Vacuum Circuit Breaker
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Summary
ZW32-12 outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short circuit protection in 12kV, 50Hz/60Hz power system. It is applicable for substations, industry and mining, urban and rural electricity power networks, especially applicable in occasions with frequent operation and automatic power distribution network. It accords with the standard of IEC62271-100 & GB1984 AC high voltage circuit breaker, GB/T11022 HV general technical requirement of switch and control apparatus.
Technical parameter
| Item | Unit | Data |
| Rated voltage | kV | 12 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630 |
| Rated short circuit breaking current | kA | 12.5/16/20 |
|
Rated withstand current (peak) |
kA | 31.5/40/50 |
| Rated short-duration withstand current (4s) | kA | 12.5/16/20 |
| Rated short circuit making current (peak) | kA | 31.5/40/50 |
| Mechanical life | Times | Spring Operation 10000/Permanent Magnetic 30000 |
|
Rated operating sequence |
Times | O-0.3s-CO-180s-CO |
|
Breaking number for rated short-circuit current |
Times | 30 |
| Power frequency withstand voltage (1min) | kV |
Dry test-42/48(to ground, inter-pole/fracture) Wet test-34 |
| Lightning impulse withstand voltage (peak) | kV |
75/85 ( inter-pole/fracture) |
| Closing time | ms | 25~60 |
| Total breaking time | ms | ≤100 |
| Arcing time | ms | ≤20 |
| Rated input power of energy storage motor | W | 40 |
|
Rated operating voltage and auxiliary circuit rated voltage |
V |
DC220/110/24 AC220/110 |
|
Energy storage time under rated voltage |
s | ≤10 |
| Rated current of over-current tripper | A | 5 |
| Item | Closing coil | Opening coil | Over-current tripping coil |
| Rated voltage (V) | 220 | 220 | |
| Rated working current(A) |
AC:5 DC:3.2 |
AC:5 DC:0.8 |
5 |
| Voltage and current rang under normal working | Action on 65%-110% of rated voltage | Action on 65%-110% of rated voltage avoid tripping under less than 30% of rated voltage | Action on 65%-110% of rated voltage avoid tripping under less than 90% of rated voltage |
