Abstract: An electrical-stress-controlled solid dielectric cable termination assembly having an electrical stress control device which comprises a metal conductor suitably shaped to achieve an electrical stress control function. A durable material having a high dielectric strength is applied as a coating to the exposed surfaces of the conductor. The coating prevents conductive particles or contaminants which may be present in an insulating fluid medium from directly contacting the stress control device. Even if such particles are attracted to the device, the particles will float at the prevailing electrical potential in the region and will therefore not cause increased electrical stress. In first and second embodiments of the invention, stress control cones for a joint and a termination, respectively, are formed from modified-cylindrically-shaped metal conductors. In a third embodiment, a corona shield is formed from a modified-cylindrically-shaped metal conductor.

Abstract: A termination is provided for terminating a high voltage DC cable. The termination has an outer annular insulator containing stacked capacitor elements for relieving electrical stress at the prepared end of the cable when the cable is carrying transient AC currents produced when the DC current is changed, e.g. during polarity switching. A plurality of resistors are interconnected by annular electrically conductive elements interposed between vertically adjacent capacitor elements to provide a highly resistive pathway from the cable conductor to ground, relieving the electrical stress created by DC current. The annular electrically conductive elements also serve to dissipate heat produced by the cable conductor. Preferably the capacitors provide sufficient stress relief that the cable may alternatively be used to carry high voltage AC current.

Abstract: A method and means are disclosed for dissipating heat in a high voltage cable termination which includes a plurality of axially stacked annular capacitor elements disposed coaxially over the prepared end of a high voltage cable and disposed within an annular insulator so that a temperature gradient normally exists radially across the capacitor elements. A thermally and electrically conductive annular disc is interposed between each adjacent pair of stacked capacitors for dissipating heat from the area inwardly of the capacitors to the area outwardly thereof. The conductive discs enable a significantly greater increase in terminator ampacity, and may be employed in both AC and DC high voltage systems.