Rated voltage

kV

126

Rated frequency

Hz

50

Rated current

A

2500,3150

Rated short time withstanding current

kA

40,50

Rated short circuit duration

s

4

Rated peak withstanding current

kA

100,125

Rated short time power frequency withstanding voltage

To earth, between phases

kV

230

Between fractures

kV

230+73

Rated lightning impulse withstanding voltage

To earth, between phases

kV

550

Between fractures

kV

550+103

Insulating withstand voltage of secondary circuit

kV

2

Yearly leakage of SF6 gas

≤0.5%

Rated air pressure of SF6 gas( 20 °C gauge)

Circuit breaker compartment:      0.6MPa,

Voltage transformer and surge arrester compartment: 0.4 MPa,

Other compartments:              0.5MPa

Moisture content of SF  gas

Circuit breaker compartment::< 150ppm(V/V)

Other compartments:  < 250ppm(V/V)

Voltage of the control circuit and auxiliary circuit

DC110 or 220V,AC220V