Fig.No.

1

2

3

Nominal Diameter of Insulator  D    mm

380

420

400

Nominal Unit Spacing  H    mm

240

240

240

Nominal Creepage Distance   mm

700

600

650

Coupling Size   mm

32

32

32

Rated Electromechanical Failure Load   kN

550

550

550

Routine Tensile Load    kN

275

275

275

Wet Power Frequency Withstand Voltage   kV

55

55

55

Lightning Impulse Withstand Voltage   kV

135

135

135

Impulse Puncture Voltage  (Per Unit Value)

2.8, 2.85*

2.8, 2.85*

2.8, 2.85*

Radio Interference Test Voltage（7.5kV ,1MHz） μV

50

50

50

Corona Extinguished Voltage  kV

Pin18，Cap22

Pin18，Cap22

Pin18，Cap22

Power Frequency Arc Test

0.12s，20kA

0.12s，20kA

0.12s，20kA

Reference Weight Per Unit    kg

33.0

30.0

32.0