Load Break Switch Fuse Supplier – FKN12-12/FKRN12-12D Indoor High Voltage Gas Pressure Load Switch – Timetric

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Load Break Switch Fuse Supplier – 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
No.	Ltem	Unit	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

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20kv Load Break Switch