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High Voltage Gas Insulated Switchgear


According to the type of switch, it is divided into load switch with grounded assembly (referred to as C module), 

load switch without grounded assembly (referred to as CB module), circuit breaker with grounded assembly (referred to as V module),

 circuit breaker without grounded assembly (referred to as VB module), circuit breaker contact switch (referred to as VZ module),

 Load switch + fuse combination electrical switch assembly (referred to as F module), isolation switch assembly (referred to as G module).

Applications of gas insulated switchgear:

  • Power transmission

  • Integration of renewable power generation units to the grid

  • Railways

What is high-voltage gas-insulated switchgear?

Gas-insulated high-voltage switchgear (GIS) is a compact metal encapsulated switchgear consisting of high-voltage components

 such as circuit-breakers and disconnectors, which can be safely operated in confined spaces.

Environmental Conditions of SF6 gas insulated switchgear

1)Suitable Temperature: -15℃~ +40℃

2)Suitable Altitude:≤1000m

3)Relative Humidity: Daily mean≤95%, monthly mean≤90%

4)Gradation of Earthquake Damage:≤Level 8

5)Applicable occasions should be free from corrosives, inflammables and vapor.



Cabinet is processed by numerical control machine tool and connected by rivets. Its protection degree is IP3X.

 It has reliable mechanical interlock and operation function of error preventing. 

The product has small volume, light weight, beautiful appearance, easy operation, long life, high parameter, no pollution

 and less maintenance as its extremely remarkable features.


1.lots of experienced engineers

( make sure the quality)

2.reliable factory located in the capital of electric and electronic products of China

 (make sure the competitive material)

3.Skilled workers   

(make sure the delivery time)

4.Fluently english                     


5.Member of different banks and have lots of platform

(make sure the receipt and payment)

Technical parameter of gas insulated switchgear:

Rated voltage (kV)12
Rated frequency (Hz)50
Rated Current of Main Busbar (A)630
Maximum Rated Current of Fuse (A)125
Rated Short-time Withstands Current of Main Loop and Grounding Loop20, 3 kA/s
Rated Peak Withstand Current of Main Loop and Grounding Loop50 kA
Rated Short-circuit Closing Current of Main Loop and Grounding Loop50 kA
Breaking Times of Load switch with  Full Capacity100 times
Fuse Breaking Current31.5, 40 kA
Rated Closed Loop Breaking Current630 A
Rated Transfer Current1600 A
Mechanical life2000 times
1min. Power Frequency Voltage (Peak Value)(Phase to Phase and Phase to Earth/Isolating Fracture)42, 48 kA
Lightning Impluse Withstand Voltage (Peak Value)(Phase to Phase and Phase to Earth/Isolating Fracture)75, 85 kA
1min. Power Frequency Voltage of Secondary Loop2 kV
Protection DegreeIP3X

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