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Indoor High Voltage Vacuum Breaker

High Voltage Indoor Vacuum Breaker

High Voltage Indoor Vacuum Breaker

Mostly purpose The ZN28-12 series vacuum breaker is HV indoor switchgear with rated voltage 12KV,three-phase AC 50HZ.The product conforms to GB1984-89 standard.There are two types of architectural structure:integrative design for operating mechanism and breaker body or segregative......

Mostly purpose
The ZN28-12 series vacuum breaker is HV indoor switchgear with rated voltage 12KV,three-phase AC 50HZ.The product conforms to GB1984-89 standard.There are two types of architectural structure:integrative design for operating mechanism and breaker body or segregative design.Integrative design is just ZN28-12 basic model.and segregative design is just ZN28A-12 model,suitable for fixed weitch cabinets,such as GG-1A(z),XGN2A10(Z)and so on.
The product can match with CD17,CD10A DC electromagnet operating mechanism and CT17,CT19 spring energy storage operating mechanism.

Technic Parameter 

Item

Unit

Parameter

Rated voltage

KV

12

Rated current

A

630/1000/1250/1600/2000/2500/3150

Rated short circuit breaking current

KA

20/25/31.5/40

Rated short circuit switching current

KA

50/63/80/100

Rated peak value withstand current

KA

50/63/80/100

Rated short time withstand current

KV

20/25/31.5/40

Rated insulation level

Power frequency withstand voltage(Rated open section front and back)

KV

42( Fracture48)

Impulse withstand voltage (Rated open section front and back)

75( Fracture85)

Rated operating sequence

 

O-0.3s-CO-180s-CO

Mechanical life

Times

10000

Breaking current frequency under rated short circuit

Times

30/20

Operating mechanism rated switch-on voltage(DC)

V

110/220

Operating mechanism rated switch-on current(DC)

A

72/128

Operating mechanism rated off voltage(DC)

V

110/220

Operating mechanism rated off current(DC)

A

3.0/1.5


External & Build in Dimension

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