12kV SF6 Outdoor Circuit Breaker–Medium Voltage Circuit Breaker Supplier

No.

item

unit

parameter

1

Rate voltage

kV

12

2

Rate current

A

630, 1000

3

Rate frequency

Hz

50

4

Rate short-circuit breaking current

kA

20

5

Rate peak withstand current

kA

50

6

Rate short-time withstand current

kA

20

7

Rate short-circuit closing current

kA

50

8

Mechanical life

times

10000

9

Times of rate short-circuit breaking current

times

30

10

Power frequency withstand voltage(1 min): phase-phase, to earth, isolating fracture

kV

42/48

11

Lightning surge peak withstand voltage: phase-phase, to earth, isolating fracture

kV

75/85

12

Secondary circuit(1min) withstand voltage

kV

2