ZN85 40.5KV indoor high voltage vacuum circuit breaker

ZN85 indoor high voltage vacuum circuit breaker 1.High quality, competitive price 2.Certification: ISO9001

ZN85 indoor high voltage vacuum circuit breaker

1.General

ZN85-40.5 type indoor high voltage vacuum circuit breaker is appropriate to 40.5kv,50Hz threephase current system, applicable to break loading current ,over load current ,fault current inmining industrial enterprise, power station, transformer substation. The layout of circuit breakerand operating mechanism are assembled up and down, which reduced the depth of circuit breakereffectively. Three poles interrupter and jointed charged body are isolated by epoxy resin insulator.This composite isolate structure meets the requirement of air and creepage distance and decreasedthe circuit breaker volume. Main conductive circuit ,vacuum interrupter, moving and fixedconductive joint are mounted in the cylinder, which makes the distance of each pole is only300mm.Main circuit electrical joints are reliable all fixed joint. Specialized designed springoperating structure is fixed in the frame of circuit breaker. This simple design makes the outputcurve and performance greatly matches to 40.5kv circuit breaker. The overall layout is reasonable,simple and free of maintain. It can be used in frequent and harsh operating condition.

2. Ambient conditionAmbient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)Altitude: ≤1000mRelative humidity: daily average relative humidity: ≤95%; monthly average relativehumidity≤90%, daily average saturated vapor pressure ≤2.2*10-3 MPa,monthly averagevalue ≤1.8*10-3 MPaEarthquake intensity: ≤8 degreeThe installation should be free from fire, explosion, severe vibration, chemical corrosion andserious pollution

3.Mainly technical parameters

No	Item		Unit	Technical parameters
1	Rated voltage		KV	40.5
2	Rated current		A	1250		1600	2000,2500
3	Rated short-circuit breaking current		KA	25	31.5	25	31.5
4	Dynamic current (peak)		KA	63	80	63	80
5	4S thermal current		KA	25	31.5	25	31.5
6	Rated short circuit making current (peak)		KA	63	80	63	80
7	Rated short-circuit current breaking times		Time	20
8	Rated operating sequence			0-03s-Co-180s-Co
9	Rated insulation level	1min power frequency withstand voltage	KV	95
		Lightning impulse withstand voltage (peak)		185
10	Mechanical life		Time	10000
11	Rated single capacitor device ON-OFF  current		A	630
12	Rated single back-to-back capacitor device  current		A	400
13	Rated voltage electrical energy storage		V	AC,DC,110,220
14	Energy Storage Power Rating		W	≤230
15	Electrical Energy Storage Energy Storage time		S	≤15
16	Hop Tripping coil rated voltage		V	DC,110,220
17	Hop Tripping coil rated current		A	1.05(110V) 0.96(220V)
18	Contactor opening distance		MM	20±2
19	Contactor Contact trip		MM	7.5±1.5
20	At the different period of three consistency		MS	≤2
21	Contact closing bounce time		MS	≤3
22	Leading electrical circuit resistance( excluding contactor arm)			≤40

4.Order instructionComplete model and order quantity of the productRated current, rated voltage, rated short circuit breaking currentRated voltage of operation mechanism open and close release, rated voltage of energysaving motorRequired accessory and quantityOther requirement please contact with us directly

ZN85 40.5KV indoor high voltage vacuum circuit breaker