Zhuhai Comking Electric Co., Ltd.

home products Others indoor high voltage vacuum load switch CKFZ-12

indoor high voltage vacuum load switch CKFZ-12

I'm online
Chat now!

View Contact Details

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

Detailed Product Description

CKFZ-12D/630-20 type indoor high voltage vacuum load switch (hereinafter referred to as "load switch") and CKFZR-12D/T125-31.5 vacuum load switch - fuse combinations (hereinafter referred to as "GIS")were developed by comking at home and abroad advanced technology, self-developed three-phase AC 50Hz, rated voltage of 12kV indoor high-voltage power distribution switches for industrial and mining enterprises, high-rise buildings, residential quarters, schools, hospitals, stations, terminals and other distribution systems as indoor ring network of three-phase power supply equipment or terminal equipment.

Technical parameters

name		Units	switch	GIS
Rated voltage		kV	12	12
Rated Frequency		Hz	50	50
Rated Current		A	630	125
Short-circuit breaking current(Vacuum arc-extinguishing chamber)		A	10000	10000
Rated the expected short-circuit breaking current		kA		31.5
Rated cable charging breaking current		A	20	20
Rated short-circuit closing current (peak)		kA	50	50
Rated short-circuit breaking current (fuse)		kA		31.5
Rated short-term withstand current		kA	20
Rated peak withstand current		kA	50
Rated short-term withstand current duration (load switch)		s	3
Duration of Rated short-term withstand (earthing switch)		s	2
Rated breaking current transfer or transfer of current		A		10000
Rated Lightning Impulse withstand Voltage	Phase, relative to	kV	75	75
	Isolated fracture	kV	85	85
	Vacuum arc-extinguishing chamber	kV	75	75
Rated short-time (1min) power-frequency withstandvoltage	Phase, relative to	kV	42	42
	Isolated fracture	kV	48	48
	Vacuum arc-extinguishing chamber	kV	42	42
Mechanical life		times	10000	10000
Main circuit resistance		μΩ	≤180	≤300
temperature rise test Current		A	630	125
Linkage Test Release		times		100
Mechanical life of isolating switch		times	≥2000	≥2000
Mechanical life of the earth switch		times	≥2000	≥2000
switches classification by use			E2	E2
Mechanical life according to the switch			M2	M2
switch clearance between open contacts		mm	10±1	10±1
Load average gate switching opening speed		m/s	≥0.8±0.2	≥0.8±0.2
Average closing speed of the load switch		m/s	≥0.6±0.2	≥0.6±0.2
At different stages of three-phase reclosing		ms	≤2	≤2
Contact closing bounce time		ms	≤3	≤3
contact trip		mm	4±1	4±1
rated Contact pressure		N	1000±200	1000±200