VS1-12 side type vacuum circuit breaker is a indoor high voltage switch equipment, applicable to 12 kv rated voltage, three-phase power system frequency 50 hz, used as protection and control electric equipment, because of the special superiority of vacuum circuit breaker, especially suitable for need rated power flow frequent operation, or more open circuit short circuit current.
The vs1-12 side mounted vacuum circuit breaker adopts fixed installation, which is mainly used for fixed switch cabinet. This breaker can be used alone, and can also be used for ring network power supply, box type transformer or various non-standard power supply systems.
· external dimensions (side mounted indoor high-pressure vacuum circuit breaker ZN63(VS1)-12)
· main technical parameters (side mounted indoor high-pressure vacuum circuit breaker ZN63(VS1)-12)
|1||The rated voltage||KV||12|
|2||Rated insulation level||Peak voltage of rated lightning impulse withstand voltage||KV||75|
1 min working frequency withstand voltage
|3||Rated short circuit breaking current||KA||20/25||31.5|
|5||Rated thermal stability current (effective value)||KA||20/25||80|
|6||Rated dynamic stable current (peak)||63||80|
|7||Rated short circuit closing current (peak)||63|
|8||Rated short circuit breaking current breaking times||A||50|
|9||Power frequency withstand voltage of secondary circuit (1min)||V||2000|
|10||Rated operation sequence||Score -0.3s- composite score -180s composite score|
|11||Rated thermal stability time||S||4|
|12||Rated open current for single/back-to-back capacitor Banks||A||630/400|
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