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Type W for motor protection

H.V.HRC.current-limiting fuses type W for motor protection

H.V.HRC.current-limiting fuses type W for motor protection

◆  H.V. HRC Current-limiting Fuses Type W is designed for protection of motors or other power equipments working under a voltage of 3.6, 7.2kV,50HZ, and with a rated current up to 224A fromoverloading or shortcircut.it can also be used withloading switch, vacuum contact.

◆  It conforms to IEC282-1,IEC644,BS and GB15166.2


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◆  H.V. HRC Current-limiting Fuses Type W is designed for protection of motors or other power equipments working under a voltage of 3.6, 7.2kV,50HZ, and with a rated current up to 224A fromoverloading or shortcircut.it can also be used withloading switch, vacuum contact.

◆  It conforms to IEC282-1,IEC644,BS and GB15166.2




























◆ When started with full voltage,Rated current≈twice of loaded motor current;When started under other circumstances,rated current≈1.25times of loaded motor current.For directly started motor, fuses of proper rated currentshould be selected according to the following  formula;

ly=N·ln·Φ
ly —starting current
N—Ratio of starting current and loaded current,usually N≈6
In—loaded motor current
Φ—comprehensive coefficient,see the table below;



◆ Refer to Time-current Characteristics Diagram for Selection of proper H.V. fuse link,Rated current of fuse link should be 1.3 times than loaded motor current.