TD-24/1250-31.5 Vacuum arc extinguishing chamber-[Quotation-data]--Shanghai Huabang Industrial Business-www.91way.com

Product name：

TD-24/1250-31.5 Vacuum arc extinguishing chamber

specification：

Category：

Price：

factory price

Brand：

Shanghai

Place of Origin：

China

Available Quantity：

batch

delivery cycle：

Spot goods (or inquire by telephone)

Shanghai Beiyuan Industry and Trade Co.,Ltd
+86-21-66770508
+86-139101609058

91way@163.com
13916500500(Wechat)

TD-24/1250-31.5 Vacuum arc extinguishing chamberDetailed product description：

Main technical parameters of vacuum arc extinguishing chamber for TD-24/1250-31.5 circuit breaker

serial number	name	unit	Numerical value
one	rated voltage	kV	twenty-four
two	rated current	A	one thousand two hundred and fifty
three	rated frequency	HZ	fifty
four	Short term (1-minute) power frequency withstand voltage	kV	seventy-nine
five	Lightning impulse withstand voltage (peak value)	kV	one hundred and forty-five
six	Rated short-circuit breaking current	kA	thirty-one point five
seven	Rated peak withstand current	kA	eighty
eight	Rated short-circuit closing current	kA	eighty
nine	Rated short-time withstand current (4 seconds)	kA	thirty-one point five
ten	Rated short-circuit duration	s	four
eleven	Rated short-circuit breaking current breaking times	time	thirty
twelve	mechanical life	time	ten thousand
thirteen	Contact self closing force	N	110±40
fourteen	Contact reaction force at rated opening distance	N	190±40
fifteen	Allowable wear thickness of contacts	mm	three
sixteen	Circuit resistance under rated contact pressure	μΩ	≤20
seventeen	Gas pressure inside the vacuum arc extinguishing chamber	Pa	≤1.33×10^-3
eighteen	Quality of the sports section	kg	one point two nine

Mechanical parameters of supporting vacuum switch

one	contact gap	mm	13±1
two	Average opening speed	m/s	1.4±0.2
three	Average closing speed	m/s	0.8±0.2
four	Contact closing bounce time	ms	≤2
five	Rated contact pressure	N	3000±200
six	Contact closing and opening at different periods	ms	≤1
seven	Contact rebound amplitude	mm	≤1.5

Vacuum arc extinguishing chamber for TD-24/1250-31.5 circuit breaker