ZW8-12 Series outdoor high voltage vacuum circuit breaker

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Specification:10-2000 USD/PIECEUse Parts:1 PIECESupply Ability:1000 PIECEPayment Terms:TT , LC , Others Tags:

Product Detail

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DetailPlace Of Origin：Hangzhou,China

General Description

ZW8-12 Series outdoor high voltage vacuum circuit breaker is main switch equipment of rated voltage 12KV, three phases AC50Hz system, to switch on/off loading current, over-current, and short circuit in rural or urban power network. The structure of breaker is of three-phase assembled in a tank, three-phase vacuum arc-extinguishing chamber enclosed in metal tank, insulation material between phases and phase to each made of SMC, reliable performances, and high insulating strength.

ZW8-12G consists of ZW8-12 breaker and isolator, called combined breaker, can be used as sectionalizer.

The operating mechanism for this series breaker is CT23 spring charging mechanism, motor or hand operating type.

Main Technical Parameters

Item	Description		Data
1	Ratedvoltage(KV)		12
2	Max.voltage(KV)		12
3	Ratedcurrent(A)		630
4	Ratedshortcircuitloadbreakingcurrent(KA)		20
5	Ratedshortcircuitmakingcurrent(peak)(KA)		50
6	Ratedpeakwithstandcurrent(KA)		50
7	Rated1minwithstandcurrent(KA)		20
8	Ratedinsulationlevel(KA)	Powerfrequencywithstandvoltage(dry)	42
		Lightningimpulsewithstandvoltage(peak)	75
9	Ratedoperatingsequence		O-0.3s-CO-180s-CO
10	Mechanicallife(times)		10000
11	Nosofbreakingratedshortcircuitbreakingcurrent(times)		30
12	Ratedclosebrakevoltageofoperatingmachnie(V)		110,220
13	Ratedopeningbrakecurrentofoperatingmachine(V)		110,220
14	Openingdistanceofcurrent(mm)		11±1
15	Overtravelingdistance(springcompressedlenghtofcontact)(mm)		3
16	Asynchronyofopeningorclosingthreephases(ms)		≤2
17	Thejumptimeofcontactclosebreak(ms)		≤2
18	Averagebreakspeed(s)		1.0±0.2
19	Averageclosingspeed(s)		0.7±0.15
20	Openingtime(s)	Ubdermax.operatingvoltage	0.015-0.05
		Undermin.operatingvoltage	0.03-0.06
21	Closingtime(s)		0.025-0.05
22	Maincircuitresistanceofeachphase(μΩ)		≤120
23	Permissibleabradedthicknessofmovingandstaticcontacts(mm)		3