FN7-24 INDOOR HV LOAD BREAK SWITCH

NO.

Items

Unit

Value

1

rated voltage

kV

24

2

rated frequency

Hz

50

3

rated current

A

400, 630, 1250

4

rated active load breaking current

A

400, 630, 1250

5

Rated closed loop breaking current

A

400, 630, 1250

6

5% rated active load breaking current

A

20, 31.5, 62.5

7

rated cable charging breaking current

A

10

8

1min power frequency withstand voltage: phase-to-phase, phase to earth/ fracture

kV

50/60

9

lightning impulse withstand voltage: phase-to-phase, phase to earth/ disconnecting fracture

kV

125/145

10

rated short time withstand current (thermal stability)

kA

16, 20, 25

11

rated short circuit duration

s

1

12

rated peak withstand current

kA

40, 50, 63

13

rated short circuit making current

kA

40, 50, 63

14

mechanical life

 times

2000