outdoor vacuum high-voltage circuit break resonable price, good quanlity test report Introduction, zw32-12 series pillar type outdoor vacuum high-voltage circuitbreaker is a kind of outdoor high-voltage switch equipment of three phase current 50HZ,rated voltage 12kv.It is used in opening and closing the load current, overload current and short circuit current of the power distribution network of the whole city or the village.a.      ambient air temperature , upper limit +40, lower limit-40b.      elevation,≤1000mIf there is any need to increase the elevation,, the rated insulation level should be increased properlyc.       wind pressure, less than 700pa(the same as 34m/s wind speed)d.       Amplitude, The earthquake intensity does not exceed  8 degreese.       pollution level, level 3f.        daily range of temperature ,less than 25 The main technical parameter,  

project		unit	zw32-12/T400-12.5	zw32-12/T630-16	zw32-12/T630-20
rated voltage		KV	12
rated current		A	400	630	630
rated short open current		KA	12.5	16	20
rated short making current(peak)			31.5	40	50
rated peak withstand current			31.5	40	50
rated short withstand current			12.5	16	20
rated short duration		s	4
rated isolation level	thunder impulse withstand voltage (peak )	kv	alternated, to earth75, fracture85
	1min power frequency withstand voltage		alternatedto earth 42 tracture85
rated operating sequence			close-0.3s- open and close-180s- open and closeelectromotion agency
operations of short-circuit making current breaking current interruption			30
mechanical life			10000
rated operating voltage(open and close coil)		v	DC220 110 AC220 110
contact erosion permission length		mm	3
rated current of overcurrent trip		A	5
current ratio of mutual inductor			200/5 400/5 600/5
rated contact stroke		mm	9±1
			2±0.5
average opening speed		m/s	1.2±0.3
average closing speed			0.6±0.2

ZW32-12 Outdoor Vacuum Circuit Breaker