ZN63A(VS1)-12 indoor high voltage vacuum circuit
breakerOverviewVHE-12 vacuum circuit breaker with 12KV rated
voltage,indoor distribution device of three-phase ac 50HZ.
Available for industrial and mining enterprises,power plant and
substation in electric equipment protection and control,Especially
suitable for the fields of free oil, less maintenance and frequent
operation. It can be configured in the centrally installed
switchgear,double switchgear,fixed switchdaer for control and
protection of the high voltage electrical equipment. It meets
the standard of GB1984, DL403, IEC56, 694 publication.The main
characteristics of the product are:1.Circuit breaker operating
mechanism and circuit breaker ontology integration design,The
overall layout is reasonable, beautiful and concise;2.Circuit
breaker can defense all kinds of environmental impact because of
its used vertical insulation sleeve,Therefore circuit breaker can
be applied to all kinds of special environmental conditions;3.Fixed
and handcart types can satisfy different equipped requirements for
cabinet and circuit breaker;4.Few maintenance,Usually the operating
mechanism only need doing a bit of cleaning or lubrication.The
normal conditionsAmbient temperature: max +40°C min
-15ºC(conveyance under -30ºC is allowed);Altitude: ≤1000m;Relative
humidity: daily average relative humidity: ≤95%; monthly average
relative humidity:≤90%; daily average saturated vapor pressure:
≤2.2*10-3 MPa; monthly average value :≤1.8*10-3 MPa;Earthquake
intensity: ≤8 degree;The installation site should be no
explosion,severe vibration,chemical corrosion and serious
pollution.
Main
technical dataNo.ItemsUnitValue1Rated voltageKV122Rated insulation
levelRated lighting impulse withstand voltage (peak)KVPhase,over
the ground 75,fracture80Short-time power frequency withstand
voltage(1min)KVPhase,over the ground 42,fracture483Rated short
circuit breaking currentKA202531.5404Rated currentA6301250630
12501600 20002500 31501250 16002000 25003150 40005Rated thermo
stability current(valid)KA202531.5406Rated dynamic stability
current(peak)KA5063801007Rated short-circuit making
current(peak)KA5063801008Rated operations of short-circuit breaking
current interruptionTimes50(40KA as 30)9Power frequency withstand
voltage of secondary circuit(1 min)V200010Rated operating
sequence opening-0.3S-closing opening-180S- closing
opening /opening-180S- closing opening -180S- closing opening
(40KA)11Rated thermo stability timeS412Rated breaking current(a
capacitor/back to back capacitor)A630/400
800/400(40KA)13Mechanical lifeTimes30000Note:When the rated current
reached 4000A, You need enforce air cooling. /* January 22,
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