On-site cable testing with a resonant test set and an additional partial discharge measurement

Author

Schichler, Uwe ; Borsi, Hossein ; Gockenbach, Ernst

Author_Institution

Schering-Inst. of High Voltage Tech. & Eng., Hannover Univ., Germany

Volume

1

fYear

1996

fDate

16-19 Jun 1996

Firstpage

138

Abstract

With an onsite voltage test, it is possible to evaluate polymer insulated cables after laying, repair or some years in operation. Onsite cable testing can be performed easily with frequency-tuned series resonant test sets which are still available for the testing of medium and high voltage cables. Some tested cables failed after a short time in operation although they had passed the previous voltage test without breakdown. A combination of the voltage test with an additional partial discharge (PD) measurement can increase the test efficiency, but the onsite PD measurement has a number of difficulties caused by ambient noise. The paper describes the results of onsite medium voltage cable testing with a frequency tuned resonant test set and an additional PD measurement with a special PD measuring system

Keywords

electric breakdown; insulation testing; organic insulating materials; partial discharges; polymers; power cable insulation; power cable testing; test equipment; MV power cables; ambient noise; frequency-tuned series resonant test sets; insulation breakdown tests; measuring system; onsite cable insulation testing; partial discharge measurement; polymer insulation; voltage test; Breakdown voltage; Cables; Frequency measurement; Medium voltage; Noise measurement; Partial discharge measurement; Partial discharges; Resonance; Resonant frequency; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on

Conference_Location

Montreal, Que.

ISSN

1089-084X

Print_ISBN

0-7803-3531-7

Type

conf

DOI

10.1109/ELINSL.1996.549302

Filename

549302