Serial number | project | unit | parameter | |||
1 | Rated voltage | KV | 12 | |||
2 | Rated insulation level | 1min power frequency withstand voltage | Phase to phase and ground | kV | 42 | |
fracture | 48 | |||||
Lightning impulse withstand voltage | Phase to phase and ground | 75 | ||||
fracture | 85 | |||||
3 | Rated frequency | Hz | 50 | |||
4 | Secondary circuit Imin power frequency withstand voltage | kV | 2 | |||
5 | Rated current | A | 630 1250 | |||
6 | Rated short-circuit breaking current | KV | 20 25 | |||
7 | Rated short-circuit making current (peak value) | KV | 50 63 | |||
8 | Rated peak withstand current | KV | 50 63 | |||
9 | Rated short-time withstand current (4S) | KV | 20 25 | |||
10 | Rated short circuit current breaking times | times | 30 | |||
11 | Rated current breaking times | times | 10000 | |||
12 | Mechanism life | times | 10000 | |||
13 | Allowable wear thickness of contact | mm | 3 | |||
14 | Quality | kg | 170 |
Description
ZW8 12 (F, C) outdoor high voltage vacuum demarcation circuit breaker (watchdog switch) is an outdoor power distribution equipment with a rated voltage of 12kV and a three-phase AC 50Hz. The circuit breaker is mainly used to break and close the load current, overload current and short circuit current in the power system. It has overload, short circuit, quick-break, grounding protection, multiple options for reclosing, local remote control and remote communication. It is suitable for protection and control in substations and power distribution systems of industrial and mining enterprises.
ZW8F 12 (F, C) outdoor high voltage vacuum demarcation circuit breaker (watchdog switch), installed at the responsibility demarcation of overhead power distribution line, the front end of the user's incoming line will be
Automatically remove single-phase ground faults and inter-phase short-circuit faults in users, avoid faults in user circles from spreading to the transmission main line, ensure the safety of electricity use for non-faulty users, and improve the reliability of electricity use
sex.
Use environmental conditions
a. Ambient temperature: upper limit temperature +40
c. The altitude does not exceed 2000nr
d. The earthquake intensity does not exceed 8;
e. The wind pressure does not exceed 700Pa (equivalent to the wind speed of 34m/s);
f. Anti-pollution level: Level IV;
g. There is no fire, explosion hazard, chemical corrosion and frequent severe vibration field
Place
Shape and installation dimensions
Product model and meaning