Vacuum Circuit Breakers

N0.:	1	Test Item:	Rated voltage
Unit:	kV	Data:	12 / 24
N0.:	2	Test Item:	Rated current
Unit:	A	Data:	630/1250 / 630/1250
N0.:	3	Test Item:	Rated frequency
Unit:	Hz	Data:	50/60 / 50/60
N0.:	4	Test Item:	Rated short-time withstand current
Unit:	kA	Data:	25 / 25
N0.:	5	Test Item:	Rated short-circuit duration
Unit:	s	Data:	4 / 4
N0.:	6	Test Item:	Rated active load breaking current
N0.:	7	Test Item:	Rated loop breaking current
N0.:	10	Test Item:	Rated short-circuit making current
Data:	50 / 50	N0.:	12
Test Item:	power frequency withstand voltage against the earth, between phases	Unit:	kV rms
Data:	40 / 65	N0.:	13
Test Item:	power frequency withstand voltage against the isolating distance	Data:	48 / 79
N0.:	14	Test Item:	Lightning impulse withstand voltage against the earth, between phases (peak)
Data:	75 / 125	N0.:	15
Test Item:	Lightning impulse withstand voltage against the air gap(peak)	Data:	85 / 145
N0.:	16	Test Item:	Mechanical life
Unit:	Times	Data:	10000 / 10000