Medium Voltage Embedded Pole Vacuum Circuit Breaker ZN85-40.5

    Product Description   General Description   ZN85-40.5(3AV3) indoor AC HV vacuum circuit breaker (Hereinafter called circuit breaker) is applicable for  power system with three phase AC 50Hz, 40.5kV, used for industrial and mining enterprises, power plants and  Transformer substations to protect and control equipments, also, it can be used in the location where with frequent  operations.     Our advantage       Dimension         Technical data

No.	Description		Unit	Data
1	Rated voltage		kV	33
2	Rated insulation levels	Rated power frequency withstand voltage/1min ( phase to phase, phase to earth, open contacts)	kV	65
		Rated lighting impulse withstand voltage  (phase to phase, phase to earth, open contacts)		125
3	Rated frequency		Hz	50/60
4	Rated current		A	630	630	1250	1600
				1250	1250	1600	2000
						2000	2500
						2500	3150
							4000
5	Rated short circuit breaking current		kA	20	25	31.5	40
6	Rated short time withstand current		kA	20	25	31.5	40
7	Rated short circuit making current		kA	50	63	80	100
8	Rated peak value of withstand current		kA	50	63	80	100
9	Rated short circuit breaking current breaking times		times	4
10	Rated short circuit making current		kA	50,63,80,100
11	A.C. component of rate short circuit breaking current		kA	42
12	Mechanical life		times	10000
13	Allowed abrade cumulative thickness of moving and static contactor		mm	3
14	Arcing time		ms	≤15

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