Outdoor Metaclad Vacuum Switchgear Type VN - 12
 

          Technical data

Parameter

Value

Designation

VN12

Rated Voltage

12kV

Rated power frequency voltage

35kV

Rated Lightening Impulse Voltage

75kVp

Rated Normal current

630A/800A

Rated short time current

16kA/20kA

Rated duration of short time current

3sec

Rated short circuit breaking current

16kA/20kA

Rated break time

80ms

Rated make time

80ms

Mechanical life

30000 operations

Electrical life (At rated current)

20000 operations

Electrical life (At rated short circuit current)

100 operations



Salient Features

v     Conforms to IEC62271-100

v     Fixed type and easily accessible 3 phase vacuum circuit breaker.

v     Well proven vacuum interrupter for higher electrical & mechanical performance.

v     Low chopping current.

v     Inbuilt high reliability for minimum down time.

v     Optimum mechanical stability and uniform distribution of electromagnetic forces.

v     Factory assembled unit for direct installation.

v     Stored energy type motor charged spring mechanism.

v     Fire retardant high grade of insulating material used.