The VCA-12 type vacuum circuit breaker is suitable for three phase AC 50Hz and rated voltage 3.6kV to 12kV power system, as control and protection of industrial and mining enterprises, power plants and substations, and suitable for frequent operation occasions. lt has perfect mechanical and electrical interlocking function, which is suitable for the main medium voltage switchgear in the market. The product is excellent in performance, widely used in industrial chemical industry, metallurgy, construction industry, manufacturing industry, civil residential district, hospital, enterprise power distribution, transportation, subway, high-speed rail Wayand so on.
1.Ambient Temperature: No more than + 40℃ and no less than - 15℃.Average temperature is no more than +35℃ within 24 hours.
2.Altitude: No more than 1000m.
3.Relative Humidity: the average daily value is no more than 95%, the average monthly value is no more than 90%.
4.Earthquake intensity: No more than 8 degrees.
5.Vapor pressure: average daily value is no more than 2.2kPa, average monthly value is no more than 1.8kPa.
6.Installation locations without fire, explosion danger, serious pollution, chemical corrosion and violent vibration.
1.The product adopts a solid sealing insulation technology which can effectively protect the VCB interupter from impact and c llision,and has strong anti pollution ability, especially for harsh environment.lt combines with an integrated spring operating mechanism toensure stable electrical and mechanical performance.
2.lt can be used as a fixed installation unit, and also equipped with a special propulsion mechanism to form a handcart unit.
3.The structure is versatile and can match all the mainstream medium voltage switchgear in the market.
|3||Rated Insulation level||Power Frequency Withstand Voltage in 1 min||kV||42|
|Lighting Impulse Withstand Voltage (Peak)||75|
|4||Rated Short-circuit Breaking Current||kA||20||25||31.5||40|
|6||Rated Short-time Withstand Current||kA||20||25||31.5||40|
|7||Rated Peak Withstand Current||50||63||80||100|
|8||Rated Short Circuit Making Current||50||63||80||100|
|12||Rated Voltage of Aux Control Loop||V||AC110/220, DC110/220|
The rated short circuit breaking current of product with rated current 4000A could be 50KA.
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