Title :
Electrical characteristics of the XLPE/EPDM double layered interface at the power cable joint
Author :
Choi, Won-Chang ; Yoon, Jin-Yeol ; Park, Kang-Sik ; Han, Sang-Ok
Author_Institution :
Chungnam Nat. Univ., Taejon, South Korea
Abstract :
The main fault in the interface is that power cable insulating materials are mainly composed of a double layered structure, XLPE/EPDM laminates in cable joint. In this paper, an interface of XLPE/EPDM laminates was produced and the breakdown and conduction characteristics were investigated as a function of heat treatment time. The results showed that breakdown strength and conduction current were influenced by volatile crosslinking by-products (e.g. acetophenone, cumyl alcohol, α-methyl styrene) which remained inside the insulating material during the production of XLPE and EPDM, especially during the heat treatment process. The breakdown strength and conduction current of XLPE/silicone oil (12500 cSt)/EPDM was more stable than XLPE/Grease/EPDM over long heat treatment times
Keywords :
XLPE insulation; electric breakdown; electrical conductivity; ethylene-propylene rubber; heat treatment; insulation testing; laminates; power cable insulation; power cable testing; α-methyl styrene; XLPE/EPDM double layered interface; XLPE/EPDM laminates; XLPE/grease/EPDM; XLPE/silicone oil/EPDM; acetophenone; breakdown strength; conduction current; cumyl alcohol; electrical characteristics; heat treatment time; power cable insulating materials; power cable joint; volatile crosslinking by-products; Cable insulation; Conducting materials; Electric breakdown; Electric variables; Heat treatment; Joining materials; Laminates; Petroleum; Power cables; Production;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704678
