VJG(C)-12GD 12kV MV VCB vacuum circuit breaker AIR INSULATED SWITCHGEAR

KEY WORDS:High pressure vacuum switch

DETAILS

Overview

VJG(C)-12GD series indoor high voltage vacuum circuit breaker with excellent electrical and mechanical performance, stable and reliable, long life. Main circuit adopts enclosed column, improve the environmental adaptability and insulation reliability of circuit breaker; Reliable mechanical and electrical performance, extend the life of the mechanical and electronic life, make it possible to break out the free maintenance. 3.6-12kv power system, it can be used to as a network device, industrial and mining enterprises dynamic design of the protective box control unit, suitable for all kinds of different load and frequent operation, the breaking short circuit current situation many times, the product has a perfect mechanical and electrical interlocking device, has a very high stability and reliability, ensure the safety of operating personnel and equipment, to ensure the electricity Security.

☆Stationary sealing technology

☆The product adopts modular design: frame structure, integrated isolation switch, sealing vacuum circuit breaker, grounding switch, sensor ship, interlocking mechanism, operating mechanism as one of the high-performance miniaturized high voltage electrical products

☆Suitable cabinet size: 500*1000*1800mm

☆Rotary isolating switch, brake is visible after fracture.

☆Isolating switch, circuit breaker, grounding switch between compulsory mechanical interlock, to prevent wrong operation.

☆Circuit breaker adopts modular operating mechanism, can replace or repair independently, good compatibility, can use manual operation, also can choose ac, dc energy storage operation, to realize the remote control.

☆Cupboard door with grounding switch design with reliable interlocking structure, ensure the safety of operating personnel.

Using the environment conditions

Ambient temperature: + 40 ℃ to 25 ℃;

Relative humidity: average day < 95%, the average monthly < 90%;

Altitude: not more than 1000 m;

Seismic intensity: no more than 8 degrees:

Use place, no explosion danger face, chemical, and violent vibration and move.Altitude of 1000 meters above conditions of use

More than 1000 meters in elevation. Air density relative will decline, which will affect the electrical protection coefficient.Users must make when selecting switch about calculation.

Suitable cabinet

It can be assembled on small fixed cabinet, ring main unit or combined substation

VG(C)-12GD series indoor high voltage three stations vacuum breaker, main circuit vertical layout, the upper for isolating switch, middle is vacuum circuit breakers, lower for the grounding switch, operating mechanism, open circuit skeletons institutions, interlocking institutions located in the front of the switch. This switch can be installed  upside down.

☆ Safety excellent enclosed column

High reliability, stability, insulation performance, more solid structure, miniaturization, maintenance, more environmentally friendly, high mechanical resistance.

☆ Visual isolation fracture

Rotary isolator, break-brake has visible fracture after..

☆ Module type operating mechanism

Break the module type operating mechanism, can replace or repair independently, good interchangeability. You can use manual operation, also can choose ac, dc energy storage operation, to realize the remote control.

☆ Three axis step by step operation, reliable mechanical interlock

Isolating switch, circuit breaker, grounding switch is a single shaft, three have forced the mechanical interlocking between shaft, to prevent wrong operation.

☆ The outgoing end has a sensor

☆ The cupboard door and connection switch design with reliable interlocking structure

Ensure the safety of the operators, free adjustment of cupboard door close your money.

The main technical parameters

 

 Item

Unit

Data

1

Rated voltage 

KV

12

2

Maximum working voltage

KV

12

3

Rated current 

A

630 

1250

4

Rated short-circuit break current

KA

20/25

31.5

5

Rated short-circuit close current (peak value)

KA

50/63

80

6

Rated withstand current (peak value)

KA

50/63

80

7

4S Rated little withstand current

KA

20/25

31.5

8

Rated insulation level

Industrial frequency withstand voltage

KA

42/48

Thunder impulse 

withstand voltage

75/85

9

Rated operation order

 

Off-0.3S on and off-180S-on and off

10

Mechanical life

times

10000

11

Rated short-circuit current break and close time

times

50

12

Speak and move organization amount assign the current 

of the floodgate(DC)

V

AC.DC.110,220

13

Speak and move organization amount equal to  the current 

of the floodgate(DC)

V

AC.DC 110,220

14

Switching distance of the contact

mm

>11

15

Ultra journey(touches the head spring and compress length)

mm

4+/-0.5

16

Three-phase breaking into  shut 

floodgate sex of the same period 

ms

<2

17

Touch the head and shut a  floodgate of time of bouncing 

ms

<2

18

Average speed of breaking brake 

m/s

0.9~1.7

19

Average speed of closing brake 

m/s

0.6~1.0

21

Time of closing brake 

s

<0.1

22

Each the resistance of main return circuit

u  Ω

<45

23

Allowance abrasion cumulated thickness 

of the moving and stationary contact

mm

3

RETURN

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