H. V HRC Series High Voltage Limit-Current Fuse for Motor Protection (England BS standard)

详情

Applications:
H.V HRC current-limiting fuses type W motor protection is mainly used in AC *0hz.rated voltage 3.***0kv,rated current up to **0A(3.6KV),**4A(7.2KA) circuit for protecting motor and power equipment form overload and short-circuit.it can also be sued withload switch.vacuum contact.
it conforms to IEC****1,IEC**4,BS and GB***6.2

DESIGN FEATURES:
W type H.V HRC current limiting fuses has two installation. bus-*bar installation and insert installation. it is small in volume.reliable in connection the power striker parallels to the fuse element made from pure silver .they are sealed. in the fuse tube filled with chemically treated high -purity quarta sand.it is made from heat resistand.high duty ceramic or epoxy glass.when fault circuit happens the fuse link metlts.the high resistant metal wire paralleling to fuse link melts immediatedly at the appearamce of the arc.and the strikerjumps out to push the chained equipment contact.signaling the melting or automatically cutting the circuit.W type H.V HRC current limiting fuse has many merits as high current limiting ability .high breaking capacity.quick and punctual in action.reliable in performance

Key Specifications/Special Features:
1.motor protection
2.High breaking capability
3.High voltage current limiting fuse
4.Suitable for electrical power system of AC *0Hz, rated voltage *0kV and below, rated current up to **0A(3.6KV),**4A(7.2KV) circuit for protecting motor and other power equipment from overload and short-circuit.
5.High-pressured fuse conforms to the national GB****6.2 standard and the international electrical committee IEC ****2 standard as well as German DIN standard and British BS  standard.

model		Rated  voltage  (KV)	rated current                        of the fuse links                   (A)	Rated breaking  current                         (KA)	dimensions                  (mm)¢D	(See fig.,1)L
Foreign	Department
WDF.O	XRNM1	3.6	*0/*3/*0/**0/**5	*0	*1	**4
WFF.O	XRNM1	3.6	**5/**0/**0	*0	*6	**4
WKF.O	XRNM1	3.6	**0/**5/**5/**0	*0	*6	**4
WFN.O	XRNM1	7.2	*5/*1.5/*0/*0/*3/*0/ **0/**5/**0	*0	*6	**3
WKF.O	XRNM1	7.2	**0/**4	*0	*6	**3
	XRNM1	*0	*5/*1.5/*0/*0/*3/ *0/**0/**5/**0/**0/**4	*0	*6	**0

NOTE:under stipulated condition.min breaking current of fuse could be as high as 2.**3times than rated current.                            7.2KV fuse link of **4A or above have a dual tube body                                                                                                  3.6KV fuse link of **0A or above have a dual tube body 

DIMENSION OF MOTOR PROTECTION FUSE TYPE w FOR BUSBAR INSTALLATION(MM)
MODEL	DIMENSIONS
	A	B	C	G	E	F
WFF.O	**0	**2	**0	**0	**6	**9
WKF.O	**0	**2	**0	**0	**6	**9
WFN.O	**0	**1	**0	**0	**6	**9
WKN.O	**0	**1	**0	**0	**6	**9
XRNM1	**0	**9	**0	**0	**6	**5

SELECTION FOR W TYPE MOTOR CURRENT LIMITING FUSE
When started with full voltage.rated current≈twice of loade motor current.when started under other circumstances.rated current≈1.5times of loaded motor current for directly started motor.fuses of proper rated current should be selected according to the following formula.
ly=N.1n¢
ly:Starting current
N:Ration of starting current and loaded current.usually N≈6
1n:Loaded motor current
¢:comprehensive coefficient.see the table below:

¢comprehensive coefficient
start time	2	4	8	*6
¢	1.7	1.9	2.1	2.3

Rear to time current characteristic diagram for selection of proper H.V.fuse link.rated current of fuse link should be 1.3 times than loaded motor current.

国家:	China
型号:	XRNmi-3.6KV/7.2kv/10kv
离岸价格:	（面議） 获取最新报价
位置:	china
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