TJC-7.2/630B Ceramic vacuum arc extinguishing chamber-[Quotation-data]--Shanghai Huabang Industrial Business-www.91way.com

Product name：

TJC-7.2/630B 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：

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

91way@163.com
13916500500(Wechat)

TJC-7.2/630B Ceramic vacuum arc extinguishing chamberDetailed product description：

Overview
The TJC-7.2/630B contactor uses a ceramic vacuum arc extinguishing chamber with a corrugated ceramic insulation shell and copper tungsten carbide alloy contacts. It adopts advanced one-time sealing technology and has the advantages of small volume, high insulation level, low current cutoff value, long service life, simple maintenance, no explosion hazard, no pollution, and low noise. The contactor assembled with it can frequently operate various electrical equipment, and when combined with fuses, it can form an F-C cabinet.

Main technical parameters of ceramic vacuum arc extinguishing chamber for TJC-7.2/630B contactor

Parameter name	Unit Unit	Numerical Value
Rated voltage	kV	seven point two
Rated normal current	A	six hundred and thirty
Rated frequency	Hz	fifty
Rated put through current	kA	six point three
Rated breaking current	kA	five point zero four
Limiting breaking current	kA	six point three
Rated short-time withstand current Rated short-time withstand current	kA	six point three
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	thirty-two
Rated lightning impulse voltage Rated lighting impulse voltage	kV	sixty
Circuit resistance under contact self closing force Contact automatic blocking ability loop electrical resistance	μΩ	≤100
Electricity life	Ten thousand times	twenty-five
Mechanical endurance	Ten thousand times	fifty
Closing force due to bellows and atmosphere	N	70±20
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	100±20
Allowable wear thickness of contacts Contact -wear allowance thickness	mm	three
Internal gas pressure	Pa	≤1.33×10ˉ^three
Allow storage period	Year of Year	twenty

Cooperate with the mechanical parameters of the contactor

Project	Unit Unit	Numerical Value
Contact stroke distance	mm	6±1
Contact travel	mm	2±0.5
Average closing speed	m/s	0.3±0.1
Average opening speed Average opening speed	m/s	0.6±0.2
Rated contact pressure Rated contact pressure	N	100±20
Contact closing bounce time Contact closeting bounce time	ms	≤2
Closing Same Period	ms	≤1

Ceramic vacuum arc extinguishing chamber for TJC-7.2/630B contactor

TJC-7.2/630B Ceramic vacuum arc extinguishing chamber（schematic diagram）