Buy Mv Panels Factory – 12kV 1250A 31.5kA High Voltage Vacuum Circuit Breaker – JSM TRANSFORMER

Our advancement depends over the superior machines, exceptional talents and continually strengthened technology forces for Outdoor Circuit Breaker, Dry Transformer, Power Station Transformer, We have exported to more than 40 countries and regions, which have gained good reputation from our costumers all over the world.

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Buy Mv Panels Factory – 12kV 1250A 31.5kA High Voltage Vacuum Circuit Breaker – JSM TRANSFORMER Detail:

The China VD4 series vacuum circuit-breakers are devices for indoor switchgear installation. Please contact ROCKWILL for special installation requirements. VD4-R series medium voltage vacuum circuit breakers with lateral operating mechanism for indoor installation feature the separate pole construction technique. Each pole houses a vacuum interrupter which is encased in the resin when the cylinder is moulded thanks to a special manufacturing process. This construction method protects the vacuum interrupter from shock, pollution and condensation.
The operating mechanism is the trip-free stored energy type with independent opening and closing regardless of the operator’s action. The operating mechanism is widely used in all VD4-R series circuit-breakers with frontal control.
The circuit-breaker can be remote controlled when fitted with dedicated electrical accessories (gearmotor, opening and closing release).
The operating mechanism, the three poles and the current sensors (if provided) are installed on a metal frame without wheels. The construction is particularly compact, sturdy and of limited weight.
VD4-R series circuit-breakers with lateral operating mechanisms are life-long sealed pressure devices.(Standards IEC 62271-100)

Vacuum circuit-breaker		**4/R 12			**4/R 17			**4/R 24
Standards		*			*			*
Rated voltage	Ur(kV)	12			17.5			24
Rated insulation voltage	Us(kV)	12			17.5			24
Withstand voltage at 50Hz	Ud(kV)	28			38			50
Impulse withstand voltage	Up(kV)	75			95			125
Rated frequency	fr(Hz)	50-60			50-60			50-60
Rated thermal current	Ir(A)	630	800	1250	630	800	1250	630	800	1250
Rated duty breaking capacity (symmetrical rated short-circuit current)	Isc(kA)	12.5	/	/	12.5	/	/	12.5	/	/
		16	16	16	16	16	16	16	16	16
		20	20	20	20	20	20	20	20	20
		25	25	25	25	25	25	/	/	/
Short-time withstand current(3s)	Ik(kA)	12.5	/	/	12.5	/	/	12.5	/	/
		16	16	16	16	16	16	16	16	16
		20	20	20	20	20	20	20	20	20
		25	25	25	25	25	25	/	/	/
Making capacity	Ip(kA)	31.5	/	/	31.5	/	/	31.5	/	/
		40	40	40	40	40	40	40	40	40
		50	50	50	50	50	50	50	50	50
		63	63	63	63	63	63
Making capacity		*			*			*
Opening time	ms	40…60			40…60			40…60
Arcing time	ms	10…15			10…15			10…15
Total break-time	ms	50…75			50…75			50…75
Closing time	ms	30…60			30…60			30…60
Code	Available versions
Closing pushbutton	**4circuit-breakers with lateral operating mechanism are available in the following versions:
Open/closed indicator
Discharged	Center-distance P=()mm						Fixed		Removable
Operation counter							210		210
Manually charging handle							230		230
Opening pushbutton							250		250
Protection relay							275		275
Delivery terminal box							300		300
Current transformer							310		310
Polo

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Now we have highly developed devices. Our items are exported towards the USA, the UK and so on, enjoying a great popularity among the customers for Buy Mv Panels Factory – 12kV 1250A 31.5kA High Voltage Vacuum Circuit Breaker – JSM TRANSFORMER , The product will supply to all over the world, such as: Zimbabwe, Zambia, Malta, Our company is working by the operation principle of "integrity-based, cooperation created, people oriented, win-win cooperation". We hope we can have a friendly relationship with businessman from all over the world.