Item

Unit

Data

Rated voltage

kV

12

1min. PF withstand voltage

kV

42

1 min P. F withstand voltage-wet

kV

34

(phase to earth, outer insulate)

Lightning impulse withstand voltage(peak)

KV

75

Rated current

A

630, 1250

Rated power frequency

HZ

50/60

Rated short-circuit breaking current

KA

12.5,16,20

Rated operating sequence

O-0.3s-CO -180s-CO

Rated short-circuit breaking time

Times

30

Rated short-circuit making current(peak)

KA

31.5,40,50

Rated withstand current (peak)

KA

31.5, 40, 50

Rated short-time withstand current(4s)

KA

12.5, 16, 20

Rated short-circuit duration

s

4

Mechanical life

Times

10000

Rated operating voltage and rated

V

220

voltage of auxiliary loop

Rated current of over-current tripper

A

5