Project

Unit

Data

Rated frequency

Hz

50

Rated voltage

kV

40.5

Short-time (1min) power frequency withstand voltage

To the ground and interphase

kV

95

Interfracture

118

Lightning impulse withstand voltage (peak)

To the ground and interphase

kV

185

Interfracture

218

Partial discharge limit value (test voltage is 1.1Ur)

pC

≤ 100

Rated current

A

630/1250/2500/3150

Rated short-circuit breaking current

kA

25/31.5/40

Number of rated short-circuit breaking current

Times

30

Rated short-time withstand current

kA

25/31.5/40

Rated short circuit duration

S

4

Rated peak withstand current

kA

63/80/100

Earthing switch short-circuit closing capacity

Times

2

Mechanical life of two-position switch

Times

3000

Breaker mechanical life

Times

10000

Main circuit resistance

μΩ

≤ 100

Loss of operation continuity category

1

LSC2B

Class bulkhead and valve

1

PM

Reachable species

1

B (F,L,R)

Duration of internal arc test current

s

0.5

Protection level

Cabinet shell

1

IP4X

Compartment

1

IP2X