Description:ZW20-12 outdoor high voltage vacuum circuit
breaker for a period of 12KV, rated voltage of the three-phase AC
50HZ outdoor distribution equipment. It adopts vacuum arcing and
SF6 gas as insulating medium is ZW20-12 column type vacuum circuit
breaker on the modified products.The product suitable for
substation industrial and mining establishment's rural power
network and occasions with frequent operation to protect and
control. ZW20A outdoor AC high voltage vacuum circuit breaker is
mainly used to break and close load current, over-load current and
short-circuit current in outdoor 36kv three-phase alternating
current 50Hz power system, also suitable for occasion with frequent
operations.Service environment: 1.Altitude: ≤3000
Meters2.Enviroment temperature: outdoor -40ºC ~ +40ºC the daily
temperature difference is 25ºC3.Wind speed: ≤35m/s4. Location is
without inflammable substances, explosives, rusty chemicals and
strenuous vibration NO.ItemUnitValue01Rated voltagekV1202Rated
frequencyHz5003Rated currentA63004Rated short-circuit breaking
currentkA2005Withstand current of rated peak currentkA5006Rated
short time withstand current(4s)kA2007Rated short open/close
current(peak)kA5008Mechanical lifetimes1000009Open/close times of
rated currenttimes1000010Open/close times of rated short-circuit
breaking currenttimes3011Power frequency with stand voltage
(1min):between phases, ground/fracturekV42/4912lightning impulse
withstand voltage(peak)between phases,
ground/fracturekV75/85132nd circuit 1min power frequency
withstand voltagekV214Net weightkg140/* January 22, 2024 19:08:37
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