1.1 Scope This standard covers ac switches rated above 1 kV up to and including 52 kV for use in metal-enclosed switchgear. These switches may be: a) Stationary or drawout b) Manual or power operated c) Fused or unfused Within this standard, the words "switch(es)" shall be considered to mean three-phase, ac, gang-operated, switch(es) as defined by this scope. These switches are intended to be installed in an enclosure that provides a degree of protection to the switch and the enclosure may be… read more suitable for indoor or outdoor conditions and complies with the requirements of switchgear assemblies as defined by IEEE Std C37.20.2, IEEE Std C37.20.3, or IEEE Std C37.20.9. This standard does not apply to switches for use in subsurface or pad-mounted switchgear in IEEE Std C37.74 or to high-voltage air switches in IEEE Std C37.30.1. read less

定价： 67元 / 折扣价： 57 元

This standard establishes specifications for high-voltage (>1000 V) distribution class current-limiting type fuses and associated accessories. All of these devices are intended for use on alternating current (ac) systems. These specifications apply to the following specific types of equipment: a) Distribution class current-limiting type fuses and fuse units b) Distribution class current-limiting fuse disconnecting switches c) Item a) and item b) used in fuse-enclosure packages d) Fuse supports, fuse units, refill units, and fuse mountings of the type intended for use with distribution class current-limiting type fuses, and fuse disconnecting switches. e) Disconnecting devices created by the use of a removable switch blade in a distribution class current-limiting type fuse support.

定价： 84元 / 折扣价： 72 元

This standard provides preferred ratings for indoor AC medium-voltage switches used in metal-enclosed switchgear.

定价： 75元 / 折扣价： 64 元

定价： 50元 / 折扣价： 43 元

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… read more 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 read less

定价： 0元 / 折扣价： 0 元

This standard establishes specifications for high-voltage (above 1000 V) expulsion-type distribution-class fuses, fuse cutouts, fuse disconnecting switches, their associated fuse links and disconnecting cutouts, and accessories for these devices. All of these devices are intended for use on alternating current distribution systems. These specifications apply to the following specific types of equipment: a) Open and enclosed types of fuses and fuse cutouts b) Open and enclosed fuse disconnecting switches c) Fuse links of the type used exclusively with distribution-class fuses, fuse cutouts, and fuse disconnecting switches d) Open-link types of fuses, cutouts, and their associated fuse links e) Open and enclosed types of disconnecting cutouts f) Fuse supports, fuse mountings and fuse hooks of the type used exclusively with distribution-class fuses, fuse cutouts, fuse disconnecting switches, and disconnecting cutouts g) Fuseholders and removable switch blades of the type used exclusively with distribution-class fuse supports h) Mounting brackets used for distribution-class equipment and other accessories

定价： 89元 / 折扣价： 76 元