ZW8-12kV:630A Outdoor intelligent vacuum circuit breaker

description1
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Details
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
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Use environmental conditions

a. Ambient temperature: upper limit temperature +40b. Environmental humidity: daily average relative humidity is 95%, monthly average relative humidity is 90%, daily average saturated water vapor pressure is 2.2x1 (T3Mpa, monthly average saturated water vapor pressure is 1.8x10 3Mpa;
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

 

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