Indoor high voltage circuit breakers
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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 current，close 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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