DocumentCode :
2411600
Title :
Failures clarification of MV nonmetallic screened aerial bundled cables
Author :
Cunha, A.P. ; Oliveira, J.J.S. ; Pinheiro, W. ; Almeida, G.R.
Author_Institution :
Centro de Excelencia em Distribuicao de Energia Electrica, Brazil
Volume :
3
fYear :
1997
fDate :
1997
Abstract :
Medium voltage nonmetallic screened aerial bundled cable (ABC) has been used in Brazil for 20 years as a solution for substation exits, narrow streets and crossings. The benefits of such cables are well known. This simple cable construction has been appointed by some customers as the reason for an unexpected number of in-service failures. During the survey of plausible causes of failures several hypotheses have emerged, including an unsuitable electric field control, since the polymeric semiconducting outer layer (SMC) does not have the same characteristics of a metallic screen. This work reports the cable behaviour when subjected to a multi-stress test that simulates operation conditions, aiming to clarify failure mechanisms of such cables
Keywords :
power overhead lines; EPR insulation; MV nonmetallic screened aerial bundled cables; cable failures clarification; in-service cable failures; multi-stress test; narrow streets; operation conditions simulation; polymeric semiconducting outer layer; substation exits; unsuitable electric field control;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Electricity Distribution. Part 1: Contributions. CIRED. 14th International Conference and Exhibition on (IEE Conf. Publ. No. 438)
Conference_Location :
Birmingham
ISSN :
0537-9989
Print_ISBN :
0-85296-674-1
Type :
conf
DOI :
10.1049/cp:19970527
Filename :
667968
Link To Document :
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