Innen feste abgedichteten Hochspannungs-Vakuum circu

Summary:VS1-12 series indoor solid sealed type (VBM7) vacuum circuit breaker is used in rated voltage 12kV, three-phase 50Hz indoor high voltage switchgear, suitable to rated voltage is 12kV, frequency is 50Hz of three-phase power system, as protection and control electric appliances, due to the special vacuum circuit breaker superiority, especially suitable to the rated current needs frequent operation, or multiple open circuit of short-circuit current location. VS1-12 series solid sealed type (VBM7) vacuum circuit breaker uses stationary installation, mainly used for stationary switchgear, this circuit breaker not only can be used alone, but also can be used for ring net power supply, box variable or various non-standard power supply system. Performance advantages: This product main insulation is solid insulation, vacuum arcing chamber integrally casting in epoxy insulation in the cylinder, using this structure greatly improve the product insulation performance, it can satisfy the moisture and high altitude and other environmental requirements. Main technical parameters: ItemUnitParameterrated voltagekv12rated frequencyHz50rated insulation levelone minute power frequency withstand voltageKAon earth/alternate with42/48draught of thunder withstand voltageon earth/alternate with75/85rated short-circuit breaking currentKA202531.540rated currentA6306301250,16001250,1600125012502000,25002000,2500rated short-time withstand current(RMS)KA202531.540rated peak withstand current(peak value)506380100rated short-circuit closing current(peak value)506380100rated short-circuit current duration timeS4mechanical lifetimes20000secondary circuit power frequency withstand voltage(one minute)V2000rated operating sequenceoff-t-on and off-t1-on and offNote:20kA,25kA,31.5kA t=0.3s t1=180s; 40kA t=180s t1=180s