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PC37.42 - Specifications for High-Voltage (>1000 V) Distribution and Power Class Fuses, Distribution Enclosed Single-Pole Air Switches and Accessories Used with These Devices

Standard specifications for the devices covered by this document are necessary to assure consistent development and application of these devices by manufacturers and users of these devices.This standard establishes specifications for high-voltage (above 1000 V) fuses, distribution enclosed single-pole air switches, disconnecting cutouts, fuse disconnecting switches, and accessories for use on ac distribution systems. Devices with rated maximum voltages to 170 kV are covered. The devices to which this standard applies are as follows: a) Distribution and power class expulsion type fuses b) Distribution and power class current-limiting type fuses c) Distribution and power class fuse disconnecting switches d) Item a) through item c) used in fuse enclosure packages e) Fuse supports of the type intended for use with distribution and power class fuses, and fuse disconnecting switches f) Fuse and disconnecting cutouts g) Disconnecting devices created by the use of a removable switch blade in a distribution or power class fuse support h) Distribution class enclosed single-pole air switches i) Distribution class and power class expulsion, current-limiting, and combination types of external capacitor fuses used with a capacitor unit, groups of units, or capacitor banks. j) Fuse links when used exclusively with distribution class and power class fuses, and distribution class and power class fuse disconnecting switches k) Items a) through d) and f) through i) having integral load-break means
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