scope:

This standard establishes specifications for high-voltage (above 1000 V) distribution and power class expulsion, current-limiting, and combination-type external capacitor fuses and accessories, with rated voltages from 1 kV through 38 kV, for protecting shunt capacitors complying with IEEE Std 18™-2002¹ and NEMA CP 1-2000. All of these devices are intended for use on ac systems. These fuses may be used with capacitor units, groups of units, or entire banks and include specific capacitor line [group] and capacitor unit fuse types as follows:

a) Current-limiting fuses

b) Expulsion fuses

c) Combination of current-limiting and expulsion fuses

d) Fuse supports, fuse mountings, and accessories used with fuses of type a), type b), and type c)

e) Current-limiting, expulsion, and combination-type capacitor fuses [type a), type b), and type c), respectively] used in fuse enclosure packages (FEPs)

¹ Information on references can be found in Clause 2.