Outdoor high voltage vacuum circuit breaker ZW6-12/630-16(20)

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Outdoor high voltage vacuum circuit breaker ZW6-12/630-16(20)
Outdoor high voltage vacuum circuit breaker ZW6-12/630-16(20)

Description

ZW6-12/630-16(20) outdoor vacuum circuit breaker is suitable for three-phase power system with l 2kV and below, ac 50Hz. It is mainly used for dividing agricultural network and urban network, combining load current, overload current and short-circuit current. It can also be used in other similar places, and can also be used as a block switch of 12kV class power grid in urban areas. 

 

Working conditions

1. Ambient air temperature: upper limit +40'C, lower limit -40'C; 

2.Altitude: <2000m; 

3. Relative humidity: daily average is no more than 95%, and monthly average is no more than 90%;

4. Wind pressure: not exceeding 700Pa(equivalent to the wind speed of 34m/s);

5. Air pollution level is grade IV according to GB5582;

6. Earthquake intensity does not exceed 8 degrees . 

 

Model and meanings

 

Main technical parameters

no

Item

Unit

Data

1

Rated voltage

kV

12

2

Rated insulation level

Power frequency withstand voltage

dry

kV

42

Wet (to ground)

34

Lightning shock resistance (peak)

75

3

Rated current

A

630

4

Rated frequency

Hz

50

5

Rated short circuit breaking current

kA

12.5, 16, 20

6

Rated short circuit shut-off current

31.5, 40, 50

7

Rated peak withstand current

31.5, 50, 50

8

Rated short - term withstand current

12.5, 16, 20

9

Operating sequence

Times

0-0.3s-C0-180s-CO

10

Rated number of short circuit current breaking

 

30

11

Mechanical life

10000

12

Rated operating voltage with CT spring operating mechanism

V

DC24, 48V, AC DC110V, 220V

13

Contact allows wear thickness

mm

3

14

Rated current of overcurrent trip

A

5

15

Weight

kg

130(standard)

 

Outline dimensions

 

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