Zn63 (VS1)-12 series indoor high-voltage vacuum circuit breaker is indoor switchgear with 50Hz three-phase AC and 12kV ratedvoltage, for control and protection of electric utilities in industrial and mining enterprises, power stations and transformersubstations, which is also applicable to places where the operation is frequent. It adopts integrated design of VET operatingmechanism andbody of circuit breaker, which not only can be used as a fixed installation unit, but also can be equipped withfeed mechanism of exclusive use to form a handcart unit. Main circuit part can adopt an overall embedded pole to realize theminiaturization, high reliability and maintenance-free performance of circuit breaker. It can be equipped with KYN28A-1 (GZS).
1. Ambient temperature: smaller than 40℃,higher than -10 (allowed to be stored and transported under -30 )
2. Height above sea level: lower than 1000m;
3. Relative humidity: daily average value should be lower than 95%, the daily average saturated vapor pressure lower than 2.2×10
-3MPa, and the monthly average lower than 1.8 x 10-3MPa;
4. Seismic intensity: lower than Grade 8;
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