3 Poles Indoor High Voltage 11/12 KV Gas Pressure Load Break Disconnector Switcher Mechanism

Model: FKN12-12/FKRN12-12D

Description:

FN12-12(R)D/125-31.5 indoor AC high voltage load switch-- -fuse combination (hereinafter called FN12-12(R)D combination) is an indoor high voltage switch device which combines FN12-12D load switch and SOLAJ-12(XRNTC J-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.

Working Condition

O Altitude:not more than 1000m
O No frequent and severe vibration
O Pollution level:I

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General
Technical Parameter

FN12-12D/630- 20 indoor AC high voltage load switchlHereinafter called FN12- 12D load switch) is is suitable for three- -phase AC distribution system with rated voltage of 12 KV and rated frequency of 50Hz. It is used for opening and closing load current, closed loop current, no- -load transformer and cable charging current, closing short circuit current. The load switch equipped with the earthing switch can withstand the short circuit current. FN12-12(R)D/125-31.5 indoor AC high voltage load switch-- -fuse combination (hereinafter called FN12-12(R)D combination) is an indoor high voltage switch device which combines FN12-12D load switch and SOLAJ-12(XRNTC J-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 breaks the load switch through its impactor.
Working Condition
O Ambient air temperature:Max. +40°C;Min.- 25 ClAllowed to storage and transportation at - -30°C) the average value is not higher than 35°C with in 24 hours. O Air relative humidity:Daily average is not greater than 95%, monthly average is not greater than 90% O Earthquake intensity: no more than 8 degrees O Altitude:not more than 1000m O No frequent and severe vibration O Pollution level:I O The surrounding air is not contaminated by corrosive and flammable gases, water vapor, etc.
Drawing

Environmental

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	100
4	Lightning impulse withstand voltage	KV	To earth and phase to phase75、isolating fracture 85
5	l min power frequency withstand voltage	KV	To earth and phase to phase 42、isolating fracture 48
6	Rated thermal stability current	KA	20 (4S)
7	Rated dynamic current	KA	50
8	Rated closing current (peak	KA	50	50
9	Rated short circuit breaking current (Expected value)	KA		31.5
10	Maximum at critical breaking current	A2S	According to the fuse characteristic curve
11	Minimum breaking current	KA	According to the fuse characteristic curve
12	Rated transfer current	KA		1.5
13	Maximum breaking current (reference value)	KA	1.8
14	Breaking the capacity of the no-load transformer	KVA	1250
15	Rated cable charging curren	A	10
16	Rated active load current breaking times	Times	>100
17	The impactor touches the load switch opening time	S		>0.06
18	Earthing switch thermal stability curren	KA	20(2S)
19	Earthing switch thermal stability current (peak	KA	50
20	Motor operating power supply voltage	V	AC DC 110、220

3 Poles Indoor High Voltage 11/12 KV Gas Pressure Load Break Disconnector Switcher Mechanism

Working Condition

Working Condition

Drawing

Environmental

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