Item

Unit

Data

Rated voltage

kV

40.5

126

145

252

Rated current

A

630, 1250

1250,2000

1250,2000

1250,2000,3150

Rated short-time withstands current(RMS), 3s

kA

31.5

31.5, 40

31.5, 40

31.5, 40,50

Rated withstands current (peak)

kA

80

80, 100

80, 100

80, 100, 125

Rated power frequency withstand voltage (RMS)

To earth

kV

95

230

275(330)

460

Breaks

kV

110

265

315(378)

530

Rated lighting impulse withstand voltage (peak)

To earth

kV

185

550

650(780)

1050

Breaks

kV

215

630

750(900)

1200