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Help CenterHVD1 VS1 12KV Vacuum Circuit Breaker VCB
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1．General
VS1 12KV vacuum circuit breaker VCB
HVD1-12(VS1-12)type indoor AC HV vacuum circuit breaker VCB (hereinafter referred to ascircuit breaker) are suitable for 12kV air-insulated indoor switchgears, usedas protection and control unit of power equipment of industrial& miningenterprise. Due to the super excellence, it is especially for location whererequires the frequent operation of rated working current or multi breakingshort circuit current.
The circuit breaker adopts the integrateddesign of operating mechanism and circuit breaker body, servers as not onlyfixed installation, but also the handcart unit through equipping with a specialpropelling mechanism.
2. Service conditions
3.1 Environmenttemperature:-15℃～+40℃;
3.2 Environmenthumidity: Daily average relative humidity:≤95%, monthly average relativehumidity:≤90%; Daily average saturated vapor pressure:≤2.2×10-3Mpa,monthlyaverage saturated vapor pressure:≤1.8×10-3Mpa;
3.3 Altitude: Notexceed 1000m；
3.4 Earthquakeintensity: Not exceed°ree;
3.5 Servicelocation: No water, flammable or explosive matter, chemical corrosive gas ordrastic vibration.
1. Mainspecifications and technical parameters
Rated voltage: 12kv
Rated lightning impulse withstand voltage(1min): 75 kv
Rated short-time power frequency withstand voltage(1min): 42 kv
Rated short-circuit breaking current: 20KA / 25KA /31.5KA / 40KA
Rated current: 630A,1000A,1250A / 630A,1000A,1250A,1600A/ 1250A,1600A,2000A,2500A / 1600A,2000A,2500A,3150A
Rated peak withstand current: 50KA / 63KA / 80KA / 100KA
Rated shorted-time withstand current: 20KA / 25KA /31.5KA / 40KA
Rated shorted-time making current(peak): 50KA / 63KA /80KA / 100KA
Power frequency withstand voltage of secondary circuit（1min）: 2000 v
Opening time(rated voltage): 20~50 ms
Closing time(rated voltage): 30~70 ms
Rated short-circuit current breaking times: 50(40kA 30)times
Mechanical life: 30,000 times
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