Project

Unit

Circuit Breaker

Load switch

Rated voltage

kv

12

12

Rated current

A

630

630

Rated frequency

Hz

50

50

Rated Insulation Level

1min power frequency withstand voltage (phase-to-phase and phase-to-ground)

kv

42

42

1min power frequency withstand voltage (isolation break)

48

48

Power frequency withstand voltage (control and auxiliary circuit)

2

2

Lightning impulse withstand voltage (phase-to-phase and phase-to-ground)

75

75

Lightning impulse withstand voltage (isolation break)

85

85

Rated short-circuit breaking current

kA

20

-

Rated short-circuit closing current

kA

50

50

Rated short-time withstand current

kA

20

20

Rated short circuit duration

s

4

4

Rated peak withstand current

kA

50

50

Handover current/transfer current

A

-

-

Rated operating sequence

-

0-0.3s-CO-180s-CO

Rated inflation pressure (gauge pressure at 20 ℃)

MPa

0.02

Minimum functional pressure (gauge pressure at 20 ℃)

MPa

0

Pressure release device releases pressure (gauge pressure at 20 ℃)

MPa

0.16

annual leakage rate

-

≤ 0.01%

Mechanical life

Times

10000

10000

Main circuit resistance

μΩ

≤ 150

≤ 150