Abstract: A switching apparatus (30) provides a normally high impedance connection which is capable of switching currents with high magnitudes and high rates of rise between the primary (12) and secondary (15) neutrals of a service transformer (13), such as that used to supply power to a farmstead, such that undesirable voltages appearing on the primary neutral line are not transmitted to the secondary neutral. Upon the occurrence of a fault at the distribution transformer, or a surge on the power line, the switching apparatus (30) rapidly switches to provide a low resistance connection between the primary and secondary neutrals so that any fault current passing from the primary to the secondary of the transformer will be shunted back to the primary neutral.

Abstract: A high voltage electric cable termination module that is characterized by having a gas-restricting valve mounted on it adjacent one of its ends to impede the flow of hot, ionized arc-generated gases from the module, when an arc is formed by interrupting an electrical circuit within the module. The gas restricting valve is adapted to cooperate with either a movable contact member, or an arc follower, of a second module that is adapted to cooperate with the first module to form a plug-in type connection between a pair of electrical conductors that are housed, respectively, in the two modules. By restricting the flow of ionized gas from the modules, their arc-interrupting capability is enhanced and at the same time the risk of an arc re-strike between the conductors of the separated modules is appreciably reduced.

Abstract: An electrical connector and cable assembly comprising a predetermined length of cable and a pair of opposed flexible connector sections at each end thereof adapted to be separably engaged respectively with corresponding flexible connector sections on other connector cable assemblies to form an electrical cable of required size. Each opposed flexible connector section includes electric contact members connected to a live conductor or a plurality of live conductors in its associated cable with the contact members being adapted to engage complementary contact members in a connector section associated with another cable to form a connector assembly therebetween when the sections are matingly engaged thereby joining the live conductors together.

Abstract: A cable repair kit including the component parts thereof and a process for repairing in the field simply and quickly high-voltage electrically conductive cables whose outer jackets have been damaged but whose inner conductors have not been damaged. The kit comprises a portable container sealingly enclosing abrasive material for abrading the damaged cable portion; a cleaning compound; a filler compound for restoring or filling in the damaged region of the cable jacket; a bonding agent for bonding a patch of insulative, flexible material circumferentially about the section of the cable wherein the damaged portion is located; the insulative patch material; and a flame-resistant tape for aiding the bonding agent in joining the patch to the cable, as well as providing the patch with a smooth and continuous surface at a junction between side edges thereof and the cable surface.

Abstract: A cable for supplying electrical power in underground mining comprises plural separable sections facilitating cable maintenance. Cable sections are releasably joined by an electrical connector assembly capable of sustaining cable tensile loading and of sufficient flexibility to be taken up and paid out by cable reeling apparatus.