TD-12/630-25 Ceramic vacuum arc extinguishing chamber-[Quotation-data]--Shanghai Huabang Industrial Business-www.91way.com

Product name：

TD-12/630-25 Ceramic vacuum arc extinguishing chamber

specification：

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Category：

spare parts and accessories -- Ceramic arc extinguishing chamber

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-12/630-25 Ceramic vacuum arc extinguishing chamberDetailed product description：

Overview
The arc extinguishing chamber adopts corrugated ceramic as the insulation shell, with CuCr50 alloy contacts and cup-shaped longitudinal magnetic structure. It has the characteristics of large current interruption, high insulation level, strong arc extinguishing ability, long service life, small volume, simple maintenance, no explosion hazard, no pollution, and low noise. The outdoor vacuum circuit breaker assembled with it is used for control and protection in the transmission and distribution systems of power, machinery, chemical, metallurgical, mining, railway and other departments, and is suitable for places with frequent operations. Product Description

Main technical parameters

Parameter name	Unit Unit	Numerical Value
Rated voltage	kV	twelve
Rated current	A	six hundred and thirty
Rated frequency	Hz	fifty
Short term (1-minute) power frequency withstand voltage Short time power frequency withstand voltage (1min)	kV	forty-two
Lightning impulse withstand voltage	kV	seventy-five
Rated short circuit breaking current	kA	twenty-five
Rated peak withstand current	kA	sixty-three
Rated short circuit making current	kA	sixty-three
Rated short time withstand current	kA	twenty-five
Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated breaking current of single capacitor bank	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated breaking current of back to back capacitor bank	A	four hundred
Rated short-circuit breaking current times Rated short circuit breaking current	Next time	thirty
mechanical life Mechanical endurance	Next time	ten thousand
Contact self closing force Closing force due to bellow and atmosphere	N	140±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	230±50
Circuit resistance at lower limit of rated contact pressure Circuit resistance at lower limit of rated contact force	μΩ	≤25
Allowable wear thickness of contacts Contact limit erosion	mm	three
Gas pressure inside the vacuum arc extinguishing chamber Gas pressure inside vacuum interrupter	Pa	≤1.33×10ˉ^three
Quality of the sports section Weight of moving parts	kg	one point three
Quality of vacuum arc extinguishing chamber Weight of vacuum interrupter	kg	four point two

Mechanical parameters for using circuit breakers

Clearance between open contacts	mm	11±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact force	N	2000±200
Contact closing bounce time Contact bouncing duration at closing operation	ms	≤2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	≤2
Rebound amplitude of the opening contact Bouncing back amplitude of opening contact	mm	≤3

Ceramic vacuum arc extinguishing chamber for TD-12/630-25 circuit breaker

TD-12/630-25 Ceramic vacuum arc extinguishing chamber（schematic diagram）