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Indoor high voltage circuit breaker

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FKN12-12(R)Air High Voltage Load Break Switch With Fuse

Application
FKN12-12D/630-20 air high voltage load break switch with fuse is a three phase high voltage switch equipment of 12kv, 50hz for breaking or closing load current, loop closed current. No-load transformer and cable charging electric currentclose short circuit current. The load switch with earthing switch can bear short-circuit current.
FKN12-12RD/125-31.5 air high voltage load break switch-fuse combination unit is made of FKN2-12D load switch and S
*LAJ-12(XRNT*-12) H.V current-limiting fuse box. I can be areliable short-circuit breaking current up to any current breaking work load switch current, fuse short-circult breaking current breaking joint working between the current and the full shor-circuit current in any over-current while fuse allows, through its impact load switch sub-gate.
Using Condition

a. Ambient temperature 25℃±40;

b .Elevation 1000m;
c. Humidity: daily average humidity 
95% monthly 90%
d .No risk of fire, explosion, se      rious pollution, chemical corrosion and severe vibration
If use out of above condition ,please contact with the manufacture


Technical Parameter

No.

Item

Unit

FKN-12D/630-20

FZN-12R.D/125-31.5

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Rated ampere

A

630

125

4

Thunder voltage

kV

Isolation:85

5

1min voltage

kV

Earthling 42, isolation:48

6

Ampere

kA

20(4S)

7

Stable current

kA

50

8

current

kA

50

-

9

Breaking current

kA

-

31.5

10

Moving current

kA

-

1.5

11

Breaking ampere

kA

1.8

12

Transformer capacity

kVA

1250

13

Power charge current

A

10

14

Breaking times

times

100

15

Breaking time

S

-

0.06

16

current

kA

20(2S)

20(2S)

17

Earthling switch voltage

kA

50

50

18

Motor voltage

V

AC220, DC48

 

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