H - Electricity – 02 – G
Patent
H - Electricity
02
G
H02G 15/103 (2006.01) H02G 15/184 (2006.01) H02G 15/24 (2006.01)
Patent
CA 2093805
A transition joint for sealing an electrical coaxial cable (10) having an oil- impregnated or fluid filled layer (1t7. The trans- ition joint has two primary elements, an electrically insulative elastomeric tube (26) and a heat recoverable sleeve (32). In connect- ing a paper-insulated lead jacketed cable (10) to an extruded dielectric cable (40), the elastomeric tube (26) is placed in tight con- formity around the paper layer (16), slightly overlapping the lead jacket (12) and the central conductor (18), and further partially overlapping a connector (44) joining the conductors of the cables. The heat recoverable sleeve (32) is then contracted over the elastomeric tube (26), overlapping the lead jacket (12) and the central conductor (18), and partially overlapping the connector (44). The heat recoverable sleeve (32) mechanically restricts the elastomeric tube (26), preventing the elastomeric tube (26) from swelling which, in turn, precludes absorption of the oil, which would otherwise cause the elastomer to degrade. If the cable has an additional semiconducting layer, a high-dielectric tape may be used for dielectric stress control.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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