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High Voltage Vacuum Circuit Breaker

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ZN63(VS1)-12 High Voltage Vacuum Circuit Breaker

Application

ZN63(VS1)-12 indoor high voltage vacuum circuit breaker is used in the three-phase AC power system of frequency 50Hz, rated voltage 12kV. It is applied in the grid equipment, the power distribution system of industrial and mining enterprises as well as the places where requires repeated opening short-circuit current and frequent operation.

This circuit breaker adopts unibody design of operating mechanism and circuit breaker technology, which can not only be used as fixed installation unit, but also can constitute the handcart unit with dedicated advanced mechanism.

ZN63(VS1)-12 is indoor medium-voltage solid type seal vacuum circuit breaker, ZN63(VS1)-12 vacuum breaker suitable for the insulation in the indoor air switch for 50Hz, rated voltage 12kV and below the grid from the control and protection, ZN63(VS1)-12 vacuum circuit breaker and the frequent need for short-circuit breaking current of occasions with very good performance, fully meet the requirements of automatic re-closing and have higher reliability and service life.

 

Technical Parameter

No

Item

Unit

Value

1

Rated voltage

kV

12

2

High test operating voltage

kV

12

3

Rated current

A

630

630

1250

4

Rated short-circuit breaking current

kA

20

25

31.5

5

Rated short-circuit closing current

kA

50

63

80

6

Rated peak withstand current

kA

50

63

80

7

4Srated short time withstand current

kA

20

25

31.5

8

Rated

Insulation

Level

P.F. withstand voltage(Before and after the rated breaking)

kV

42(fracture48)

Impulse withstand voltage(Before and after the rated breaking)

kV

75(fracture84)

9

Rated operating order

 

O-0.3S-CO-180S-CO

10

Mechanical life

times

3000

11

Rated short-circuit breaking current breaking times

times

50

12

Actuator Rated closing voltage(DC)

V

110,220

13

Actuator Rated opening voltage(DC)

V

110,220

14

Clearance between open contacts

mm

11±1

15

Supper Travel(Compressed length of contact springs)

mm

3.5±0.5

16

Non corresponding time period between tri-phase opening and closing

ms

2

17

Bounce time of closing contacts

ms

2

18

Average time of opening

s

0.9~0.12

19

Average time of closing

s

0.4~0.8

20

Opening time

ms

50

21

Closing time

ms

100

22

Main loop resistance of each phase

μΩ

60

50

23

Allowed acumination thickness between moving contact and static contact

mm

3

 

 

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