Zhuhai Comking Electric Co., Ltd.

home products Others Vacuum Circuit-Breaker CKVB-12/GA

Vacuum Circuit-Breaker CKVB-12/GA

Product Details:

Brand Name	comking

I'm online
Chat now!

View Contact Details

« Prev Product ... 8 9 10 11 12 13 14 Next Product »

Detailed Product Description

It is developed by By comking independent, in the basis of similar products at home and abroad , is mainly used in 12kV power system power plants, substations and distribution system control and protection; is particularly well suited to the requirements under the rated operating current operation or more frequently breaking and closing of places of short-circuit current, with very good performance. Adapter-based product for the ring counter such as counter.

Technical parameters

Name		Units	parameters
Rated voltage		kV	12
Rated insulation level	Rated short-term tolerance to voltage	kV	42
	PeakLightning Impulse Voltage tolerance	kV	75
Rated Frequency		Hz	50
Secondary circuit voltage frequency tolerance		V	2000
Rated Current		A	630	1250		1600
4sRated short-term whithstand current		kA	25	25	31.5	31.5
Rated peak whithstand current		kA	63	63	80	80
Rated short-circuit breaking current		kA	25	25	31.5	31.5
Rated short-circuit closing current		kA	63	63	80	80
Rated cable charging breaking current		A	25
Rated capacitor current portfolio Closing		kA	12.5
Rated a single / back-to-back capacitor bank breaking current		A	630/400
Operation order			-0.3s--180s-
Mechanical life			20000
Breaking number of rated current (electrical life)			20000
number of Rated short-circuit current breaking			50
clearance between open gap		mm	11±1
overtravel		mm	3.5±1
Average closing speed		m/s	0.50.8
Average opening speed		m/s	0.91.2
closing time		ms	3570
opening time		ms	3050
Arcing time		ms	≤15
Contact closing bounce time		ms	≤2
Three-phase contact line at different periods of gate		ms	≤2
Dynamic and static contact allowed to wear a total thickness		mm	3