TF-40.5/1250-20 Ceramic arc extinguishing chamber-[Quotation-data]--Shanghai Huabang Industrial Business-www.91way.com

Product name：

TF-40.5/1250-20 Ceramic 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)

TF-40.5/1250-20 Ceramic arc extinguishing chamberDetailed product description：

Overview
The ceramic arc extinguishing chamber for TF-40.5/1250-20 load switch adopts a ceramic insulation shell, low current cutoff value, and long-life Wcu contact material, which has the advantages of strong arc extinguishing ability, reliable performance, long life, small size, no explosion hazard, and no environmental pollution The corresponding vacuum automatic switch can be used for control and protection of transmission and distribution systems in power, metallurgy, mining, chemical and other departments, especially suitable for places that require frequent operation. Product Description

Main technical parameters of ceramic arc extinguishing chamber for TF-40.5/1250-20 load switch

Parameter name	Unit Unit	Parameter Value
Rated voltage	kV	forty point five
Rated current	A	one thousand two hundred and fifty
Rated frequency	Hz	50/60
Short term (1-minute) power frequency withstand voltage Short time power frequency withstand voltage (1min)	kV	seventy
Lightning impulse withstand voltage Lightning impulse withstand voltage	kV	one hundred and seventy
Rated short-circuit breaking current Rated short circuit breaking current	kA	twenty
Rated peak withstand current Rated peak withstand current	kA	fifty
Rated short-circuit closing current Rated short circuit making current	kA	fifty
Rated short-time withstand current Rated short time withstand current	kA	twenty
Rated short-circuit duration 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
mechanical life Mechanical endurance	Next time	ten thousand
Contact self closing force Closing force due to bellow and atmosphere	N	60±20
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	145±20
Contact limit abrasion thickness allowed for contacts	mm	three
Gas pressure inside the vacuum arc extinguishing chamber Gas pressure inside vacuum interrupter	Pa	≤1.33×10ˉ^three
Weight of moving parts	kg	zero point four five
Quality of vacuum arc extinguishing chamber Weight of vacuum interrupter	kg	one point two

Mechanical parameters of load switch

Clearance between open contacts	mm	15±1
Average opening speed	m/s	1.6±0.2
Average closing speed	m/s	0.8±0.2
Rated contact force	N	700±100
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	≤2

Ceramic arc extinguishing chamber for TF-40.5/1250-20 load switch

TF-40.5/1250-20 Ceramic arc extinguishing chamber（schematic diagram）