Name						Unit	Value
Main circuit	Rated working voltage (Ue)					kV	7.2	12
	Rated working current (Ie)					A	160,250,400,630
	Rated frequency (fr)					Hz	50~60
	Rated making capacity					A	10Ie (AC-4)
	Rated breaking capacity					A	8Ie (AC-4)
	Rated short time withstand current					A	10Ie
	Rated peak withstand current					A	25Ie
	Rated short circuit duration					s	4
	Power frequency withstand voltage			Between phases, phase to earth		kV	32		42
				Vacuum breaks		kV	32		42
	Lightening impulse withstand voltage					kV	60		75
Control circuit			Rated voltage1 (Us)			V	AC or DC. 110/220
			Rated power (Ps)		Electric holding	VA	≤1000/100 (absorbing/holding)
					Mechanical holding	VA	≤900/600 (closing/opening)
Auxiliary circuit					Form		3a+3b
					Rated value		AC380V/5A, DC380V/1A
Control circuit, auxiliary circuit to earth power frequency withstand voltage						kV	2
Rated operating frequency		Long-term or mechanical holding type				time/h	300
		Short-term				time/h	600
Mechanical endurance2						10000 times	30
Electrical endurance						10000 times	10
Mechanical characteristics			Closing time			ms	≤200
			Original opening time			ms	≤160(electric holding)
							≤60(mechanical holding)
			3-phase synchronism			ms	≤3
			Closing tripping			ms	≤10
Remark: 1.rated control voltage can be made according to customer’s requirements.
2.for mechanical holding type, the interlock mechanism should be changed every 300,000 times.

EVC8-7.2/12-160/250/400/630