ZN90-40.5/T2000-31.5 Indoor vacuum circuit breakerDetailed product description：

ZN90-40.5/T2000-31.5 Indoor Vacuum Circuit Breaker

The ZN90-40.5 fully assembled vacuum circuit breaker provides users with the opportunity to choose technologically advanced vacuum circuit breaker manufacturing technology
Leading technological means are the guarantee of high reliability
Excellent overall structure
Easy user operation
Design that is easy to operate and inspect, requiring minimal maintenance
The perfect anti misoperation locking design provides safety assurance for operators

Technical parameters of ZN90-40.5/T2000-31.5 indoor vacuum circuit breaker

Serial number	Project			unit	data
one	rated voltage			kV	forty point five
two	Rated insulation level	Short term (1-minute) power frequency withstand voltage			ninety-five
		Lightning impulse withstand voltage (peak value)			one hundred and eighty-five
three	rated frequency			Hz	fifty
four	rated current			A	1250，1600，2000
five	Rated short-time withstand current			kA	25, 31.5
six	Rated peak withstand current				63, 80
seven	Rated short-circuit duration			s	four
eight	Rated short-circuit breaking current			kA	25, 31.5
nine	The specified value of expected transient recovery voltage	Test Method 4		kV	sixty-nine point five
		Test Method 3			seventy-four point five
		Test methods 1 and 2			seventy-four point five
ten	Rated short-circuit closing current			kA	63, 80
eleven	Rated operating sequence				O-0.3s-CO-180s-CO
twelve	rated time parameter	Opening time		ms	50±15
		closing time			65±15
		Combination and division time			＜150
		Cut off time			＜90
		arcing time			＜15
thirteen	Rated short-circuit breaking current breaking times			time	thirty
fourteen	mechanical life				ten thousand
fifteen	Rated operating voltage of closing and opening coils			V	AC:110、220
					DC:110、220
sixteen	Rated earth fault breaking current for different phases			kA	21.8, 27.3
seventeen	Rated breaking current of a single capacitor bank			A	six hundred and thirty
eighteen	Rated back-to-back capacitor bank breaking current				four hundred
nineteen	Rated capacitor Group closing surge	Single capacitor group	peak	kA	twelve point five
			frequency	Hz	＜1000
		back-to-back capacitor bank	peak	kA	eight
			frequency	Hz	＜1000