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Ghorit Electric Equipment Co., Ltd. Zhejiang

China Manufacturer with main products: Circuit Breaker, Switch, Capacitor, Transformer, Contactor, Light, Operating Mechanism, Fuse

Home  >Products Catalog > circuit breaker > GVS7-12 Series High Voltage Vacuum Circuit Breaker for Mine

GVS7-12 Series High Voltage Vacuum Circuit Breaker for Mine

FOB Price: 1,000.00 - 2,500.00 USD/Set
Supply Ability: 1,000 Set/Sets per Month
Shipping: ningbo/shanghai
Payment Terms: L/C, T/T, Western Union, MoneyGram
In Stock
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Zhejiang in China
Packaging Details: wooden case

Quick Details

  • Brand Name: ghorit
  • Model Number: GVS7-12
  • Type: High Voltage
  • Poles Number: 3
  • certificate: ISO9001
  • rated voltage: 12kv
  • rated frequency: 50hz

Specifications

GVS7-12 Series High Voltage Vacuum Circuit Breaker for Mine

GVS7-12 series high voltage vacuum circuit breaker for mine, adapt to our company own developed overall type spring operating mechanism, combined with flameproof electrical feeds, development, production of miniature circuit breaker. Use for underground three-phase AC 50Hz, rated voltage 12 (7.2) kV of mine explosion-proof device, available for coal mine explosion-proof electrical feeds, and general occasions of mine electrical control and protection purpose. Circuit breakers can be installed as handcart-type or fixed structure to meet the needs of different installation sites.



The Use of Environmental Conditions

1. Altitude: not exceed 2000m.

2. Ambient Temperature: not higher than +40 Celsius, not less than -15 Celsius.

3. Relative Humidity: daily average of not more than 95%, month average of not more than 90%.

4. Earthquake Intensity: not more than 8.

5. The ambient air without water drop, no serious filthy, chemical corrosion as well as place of intense vibration.

 

Mainly Technical Parameters 

NO.

Item

Units

Value

1

Rated voltage

kV

12(7.2)*

2

Rated frequency

Hz

50

3

Rated lightning impulse voltage tolerance (peak)

kV

42(32)*

4

Rated short-time power-frequency voltage tolerance (1min)

kV

75(60)*

5

Rated current

A

125, 250, 400, 630

6

Rated short-circuit breaking current

kA

2.5, 16, 20, 25

7

Rated short-circuit closing current (peak)

kA

31.5, 40, 50, 63

8

Rated short-circuit duration time

S

4

9

Rated operating sequence

O-0.3s-CO-180s-CO

10

Rated short-circuit breaking current breaking number

Times

30

11

Closing time

ms

35~70

12

Opening time

ms

20~50

13

Mechanical life

Times

10000

14

Rated storage and operation voltage

V

AC220/110DC220/110

15

Contact distance

mm

10±1

16

Contact over travel

mm

3.5±1

17

Average closing speed

m/s

0.7~1.0

18

Average opening speed

m/s

1.1~1.5

19

Contact closing spring time

ms

≤2

20

Three phase closing opening asynchrony

ms

≤2

Service Process

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