Load Break Switch Indoor High voltage disconnector ( LBS ), China Load Break Switch Indoor High voltage disconnector ( LBS ) Supplier,Factory

Load Break Switch Indoor High voltage disconnector ( LBS )

Zhejiang Xikai Electric Co., Ltd. [China]

1.Load break switch for Indoor install 2. IEC 62271Standard 3. ISO 9001:2008

Summary

FN12 is a three-phase H.V switch equipment, which is used for 12KV 50Hz for breaking and switching load current, no-load transformer cable charging current and closing short-circuit current. The load switch with earth switch can switch short-circuit current.

FN12-12DR Load Break Switch-Fuse Combination is made up of FN12-12D load switch and S[]LAJ-12(XRNT[]-10) H.V current limiting Fuse. This switch can break any current till short-circuit current. Because of the striker of the fuse, the switch can switch off automatically.

Application

It is used for the ring main units and industrial equipment of 12KV and three-phase AC 50Hz to control load and short-circuit current. Because the switch-fuse combination protects transformer equipment more reliably than circuit breaker .It is especially suitable for ring main units, radial distribution and combined transformers.

Standard

a,GB3804-90<3~65KV AC H.V Load switch>

b,GB16926-1997<High-voltage alternating current switch-fuse combinations>(eqv. IEC62271-2002)

c,GB1995-89<AC H.V isolate switch and earth switch>

Techniacl parameter and performances(please see the table)

No.	Description	Unit	FN12-12D/630	FN12-12D(R)D/100
1	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated current	A	630	100
4	Lighting impulse resisting voltage	KV	To earth and between poles 75/ across isolating distance 85
5	1min power frequency withstand voltage	KV	To earth and between poles 42/ across isolating distance 48
6	Rated short time withstand current	KA	20(4S)
7	Rated Peak Withstand Current	KA	50
8	Rated closing current(peak)	KA	50	50
9	Rated short-circuit breaking current (prospective value)	KA		31.5
10	Max. critical breaking current I2·t	A2S		fuse characteristic curve
11	Min. Breaking current	KA		fuse characteristic curve
12	Rated transfer current	KA		1.5
13	Max. breaking current(reference value)	KA	1.8
14	Braking no-load transformer capacity	kva	1250
15	Rated cable charging current	A	10
16	Rated power load current breaking times	time	≥100
17	Switch-off time of rated power load current switch on-and-off	S		>0.06
18	Rated transfer current	KA	20(2S)	20(2S)
19	Rated transfer current	KA	50	50
20	Motor operating power voltage	V	110,220 DC/AC

Operation handle

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