H - Electricity – 02 – G
Patent
H - Electricity
02
G
H02G 15/103 (2006.01) H02G 15/064 (2006.01) H02G 15/068 (2006.01)
Patent
CA 2060875
An electrical stress control device for solid dielectric cable transitions constructed according to the present invention 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. In some applications, a partially conductive shield layer of the cable is properly terminated in an electrical-stress-reducing configuration by applying a partially conductive sleeve pre-finished in the desired shape to overlap the shield layer. The pre-finished sleeve avoids the difficult task of suitably finishing the existing cable layer.
Selsing Jorgen
Thompson Mac Arthur
Bereskin & Parr
G&w Electric Co.
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