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Indoor High Voltage Vacuum Breaker

Indoor HV Vacuum Circuit Breaker

Indoor HV Vacuum Circuit Breaker

Mostly purpose The ZN12(ZN68)series vacuum breaker is an indoor HV switchgear with rated voltage 12/40.5KV,three-phase AC 50HZ,introduced from German Siemens.With simple structure,strong switching capability,long life and full operation functions,the breaker has no explosion hazard,and is easy......

Mostly purpose
The ZN12(ZN68)series vacuum breaker is an indoor HV switchgear with rated voltage 12/40.5KV,three-phase AC 50HZ,introduced from German Siemens.With simple structure,strong switching capability,long life and full operation functions,the breaker has no explosion hazard,and is easy to maintain.It is used for controlling or protecting switch in transmission and distribution systems of power plants and transformer substations.Especially for switching off important load and some places with frequently operation.The product conforms to GB1984-89 AC HV Breaker standard.

Technic Parameter 

Item

Unit

Parameter

Rated voltage

KV

12

12

12

40.5

40.5

Rated current

A

1250

1600

2000

1600

2000

Rated short circuit breaking current

KA

31.5

31.5

31.5

25

31.5

Dynamic current(Peak value)

KA

100

100

100

80

100

(50KA is 3s)4s thermal arrest current(50kA is 3s)

KA

31.5

31.5

31.5

25

25

Rated short current switching current(Peak value)

KA

100

100

100

80

80

Breaking current frequency under rated short circuit

Times

50

20

Rated operating sequence

O-0.3s-CO-180s-CO


External & Build in Dimension

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