Abstract: An apparatus includes at least one fuse clearing switch operable to create a fault on at least one AC line between a fuse and a transformer of a substation. The apparatus further includes a control system configured to be coupled to an arc detector and to operate the at least one fuse clearing switch responsive to a control signal produced by the arc detector.

Abstract: Currents may be balanced in an apparatus including first and second conductors electrically connected to a third conductor and configured to be coupled to respective first and second parallel-connected circuit breaker switches using at least one magnetic core positioned adjacent at least one of the first and second conductors to introduce an inductance in the at least one of the first and second conductors. The at least one core may include at least one magnetic material ring that at least partially surrounds the at least one of the first and second conductors. The at least one magnetic material ring may include a plurality of laminated layers of grain-oriented steel.

Abstract: An apparatus includes at least one fuse clearing switch operable to create a fault on at least one AC line between a fuse and a transformer of a substation. The apparatus further includes a control system configured to be coupled to an arc detector and to operate the at least one fuse clearing switch responsive to a control signal produced by the arc detector.

Abstract: The disclosed concept pertains generally to secondary terminal blocks and, more particularly, to apparatus and methods for isolating the secondary terminal blocks and associated wiring in electrical switching assembly enclosures. The apparatus includes a housing having an outer surface structured to form a cavity therein. The apparatus is positioned in an enclosure which includes an electrical switching apparatus and one or more secondary terminal blocks. The one or more secondary terminal blocks are positioned in the cavity such that the apparatus at least substantially isolates the one or more secondary terminal blocks from the electrical switching apparatus. Further, the apparatus is effective to substantially isolate the secondary terminal blocks from temperature and pressure effects resulting from an arcing fault occurring in the enclosure.

Abstract: The disclosed concept pertains generally to secondary terminal blocks and, more particularly, to apparatus and methods for isolating the secondary terminal blocks and associated wiring in electrical switching assembly enclosures. The apparatus includes a housing having an outer surface structured to form a cavity therein. The apparatus is positioned in an enclosure which includes an electrical switching apparatus and one or more secondary terminal blocks. The one or more secondary terminal blocks are positioned in the cavity such that the apparatus at least substantially isolates the one or more secondary terminal blocks from the electrical switching apparatus. Further, the apparatus is effective to substantially isolate the secondary terminal blocks from temperature and pressure effects resulting from an arcing fault occurring in the enclosure.

Abstract: The disclosed concept pertains generally to secondary terminal blocks and, more particularly, to apparatus and methods for isolating the secondary terminal blocks and associated wiring in electrical switching assembly enclosures. The apparatus includes a housing having an outer surface structured to form a cavity therein. The apparatus is positioned in an enclosure which includes an electrical switching apparatus and one or more secondary terminal blocks. The one or more secondary terminal blocks are positioned in the cavity such that the apparatus at least substantially isolates the one or more secondary terminal blocks from the electrical switching apparatus. Further, the apparatus is effective to substantially isolate the secondary terminal blocks from temperature and pressure effects resulting from an arcing fault occurring in the enclosure.

Abstract: The disclosed concept pertains generally to secondary terminal blocks and, more particularly, to apparatus and methods for isolating the secondary terminal blocks and associated wiring in electrical switching assembly enclosures. The apparatus includes a housing having an outer surface structured to form a cavity therein. The apparatus is positioned in an enclosure which includes an electrical switching apparatus and one or more secondary terminal blocks. The one or more secondary terminal blocks are positioned in the cavity such that the apparatus at least substantially isolates the one or more secondary terminal blocks from the electrical switching apparatus. Further, the apparatus is effective to substantially isolate the secondary terminal blocks from temperature and pressure effects resulting from an arcing fault occurring in the enclosure.

Abstract: Electrical insulation and environmental protection for electrical joints between cables and flat conductors in an electric power distribution system is provided by a flexible, electrically insulative boot which has a pair of shell halves joined by a living hinge. The two shell halves have free edges which mate to form a seam when the shell is closed to form an enclosure around the joint. The flat conductor extends through the seam in the rear face of the shell adjacent the living hinge. Pairs of cable openings in the shell halves are spaced along the front face of the boot. Additional faces at each end of the front face also have pairs of cable openings to accommodate angled mounting of the cables. Slits extend from the free edges of the shell halves to the cable openings to allow installation over assembled joints. The cable openings are serrated to accommodate a range of cable sizes.