FN7-12 Indoor high voltage load switch

Description:

• Classification Series ：High Voltage Vacuum Load Switch • Product Name ：FN7-12 Indoor high voltage load switch • Product Overview： FN7-12 Model Indoor AC HV Load Switch is suitable in 50Hz,rated voltage of 12Kv the three-phase AC power system as the breaking load short-circuit current of the power and used the Closing,until the combination...

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Detailed Description

FN7-12 Model Indoor AC HV Load Switch is suitable in 50Hz,rated voltage of 12Kv the three-phase AC power system as the breaking load short-circuit current of the power and used the Closing,until the combination of electrical short-circuit current can be breaking any current can be used as protectionpurposes.

Ambient condition

1.The ambient temperature:-25℃-+40℃,alpine region,≥-40℃。

2.The alitude:≤1000M。

3.Relative humidity:daily average value is not greater than 95%,monthlyaverage is not greater than 90%。

4.The ambient air should not be obviously polluted corrosive or flammablegases and water vapor。

Ratings

Rated voltage(KV)		12
Insulation level	1min frequency voltage(KV)	Phase to phase,to earth 42	Isolation fracture48
	Lightning impulse withstand voltage()KV	Phase to phase、to earth 75	Isolation fracture85
Rated current(A)		400	630
4S Rated thermal current(KA)		12.5	20
Rated active load breaking currentKA(Peak)		31.5	50
Rated short circuit making current(KA peak)		31.5	50

Technical specification

hem	Lm	Model	DS	DX	L	R	RA	F	Use
hem	Lm	Model	Grounding switch incoming fedder side	Grounding switch outgoing fedder side	Interlock device	Fuse	mpact fuse	Electric sub-gate devices	Use
Loadswiches	Without striker fuse	FN7-12				—			circuit load switch
		FN7-12DSL	△		△	—
		FN7-12DXL		△	△
		FN7-12R				△			Protection
		FN7-12DSLR			△	△
		FN7-12DXLR		△	△	△
	With striker fuse	FN7-12RAF					△	△	Protection
		FN7-12DSLRAF					△	△
		FN7-12DXLRAF		△	△		△	△

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