Fixed Type HV Switchgear
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KGN7-12 Box Type Fixed Switchgear
Fixed Type HV Switchgear
KGN7-12 Box Type Fixed AC Metal-enclosed Switchgear (hereinafter referred to as “Switchgear”) can be used as a device for acceptance and distribution of electric energy in 3, 6-10KV three phase AC 50 HZ system and is suitable for places with frequent operation.
KGN7-12 Box Type Fixed AC Metal-enclosed Switchgear (hereinafter referred to as “Switchgear”) can be used as a device for acceptance and distribution of electric energy in 3, 6-10KV three phase AC 50 HZ system and is suitable for places with frequent operation. The design and manufacturing of this Switchgear meet requirements in national standards GB3906 and GB/T 11022, power industry standards DL/T404 and DL/T593 and 18 Major Anti-Accident Measures of STATE GRID Corporation of China.


S/N

Item

Unit

parameters

1

Rated voltage

kV

 3.6/7.2/12

2

Rated frequency 

Hz

 50

3

Main bus rated current

A

630/1250/1600/2000/2500/3150

4

Rated insulation level

Lightning impulse withstand voltage (peak)

kV

75

85

1min power frequency withstand voltage (valid)

kV

Phase to phase and phase to ground

Disconnector fractures

42

85

5

Rated short-circuit open current 

kA

25

31.5

40

6

Rated short-circuit closing current (peak)

kA

63

80

100

7

Rated short-time withstand current (4 s)

kA

25

31.5

40

8

Rated peak withstand current

kA

63

80

100

9

IP Grade 

Enclosure IP4X

1. The bus system is single bus and single bus section system.


2. Complete mechanical interlocking function.


3. Use VGW-12 or VIG-12 series side-mounted or front-mounted vacuum circuit breaker as main switch, GN38-12 switch as upper and lower isolation switches and JN15-12 series switch as ground switch.


4. Can meet power supply requirements of a variety of power generators, substations and industry and mining enterprises.


5. Built-in vacuum circuit breaker, vacuum arc extinction chamber, maintenance-free, long service life and operating times reaching 20,000 times.


6. Advanced light-weight design and small in size.