Medium Voltage Load Switch Factories – FKN12-12/FKRN12-12D Indoor High Voltage Gas Pressure Load Switch – Timetric
Medium Voltage Load Switch Factories – FKN12-12/FKRN12-12D Indoor High Voltage Gas Pressure Load Switch – Timetric Detail:
General
FN12-12D/630-20 indoor AC high voltage load switch(Hereinafter clled FNI2-12D load switch is is suitable for three-phase AC distribution system with rated voltage of 12 KV and rated frequency of 5OHz. It is used for opening and closing load current, closed loop current, no-loa transformer and cable charging current, closing short circuit current. The load switch equipped with the earthing switch can withstand the shor circuit current.
FNI2-12IR)D/25-31.5 indoor AC high voltage load switch–fuse combination (hereinafter called FN12-12IRJD combination) is an indoor high voltage switch device which combines FNI2-12D load switch and S□LAJ-12(XRNT□-10)high voltage current limiting fuse. It can break reliably under any current except it is up to short-circuit current. The load switch breaks the working current and the fuse breaks the short circuit current. And the combination breaks any overcurrent between the working current and the full short circuit current, and the fuse breal the load switch through its impactor.
Working Condition
●Ambient air temperature:Max.+40℃;Min.-25℃(Allowed to storage and transportation at-30℃) the average value is not higher than 35℃ with in 24 hours.
●Air relative humidity:Daily average is not greater than 95%, monthly average is not greater than 90% Earthquake intensity: no more than 8 degrees.
●Altitude:not more than 1000m
●No frequent and severe vibration Pollution level:ll
●The surrounding air is not contaminated by corrosive and flammab gases, water vapor, etc.
Technical specification
|
No. |
Ltem |
Unit |
Data |
|
|
FN12-12D/630 |
FN12-12(R)D/630 |
|||
|
1 |
Rated voltage |
KV |
12 |
|
|
2 |
Rated frequency |
Hz |
50 |
|
|
3 |
Rated current |
A |
630 XX) |
|
|
4 |
Lightning impulse withstand voltage |
KV |
To earth and phase Io phase75、isolating frodure 85 |
|
|
5 |
1 min power frequency wtthsiand volloge |
KV |
To earth and phase to phase 42、isolaling fracture 48 |
|
|
6 |
Rated fhermd stability current |
KA |
20(4S) |
|
|
7 |
Rated dynamk current |
KA |
50 |
|
|
8 |
Rated dosing current (peak! |
KA |
50 50 |
50 |
|
9 |
Rated short drcuif breaking current (Expected value) |
KA |
31.5 |
|
|
10 |
Maximum at critical breaking current |
A2S |
Accorcing to the fuse characteristic curve |
|
|
11 |
Minimum breaking currenf |
KA |
Accorcing to the fuse characteristic curve |
|
|
12 |
Rated transfer current |
KA |
15 |
|
|
13 |
Maximum breaking current (reference valuel |
KA |
18 |
|
|
14 |
Breaking the capacity of the no-kx)d transformer |
KVA |
1250 |
|
|
15 |
Raled cable charging current |
A |
10 |
|
|
16 |
Raled active tood cunenl breaking limes |
Times |
> 100 |
|
|
17 |
The impodor touches lhe load switch opening time |
S |
0.06 |
> 0.06 |
|
18 |
Earthing switch Ihermal stabifcty current |
KA |
20(2S) |
|
|
19 |
Earthing switch Ihermal stability current (peak) |
KA |
50 |
|
|
20 |
Motor operating power supply voboge |
V |
AC DC 110、220 |
|
Outline overall and installing dimensions
Product detail pictures:
Related Product Guide:
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