Equipment for on-site testing of HV insulation

Author

Grun, T. ; Loppacher, M. ; Rickmann, M. ; Malewski, R.

Author_Institution

Haefely Trench, Basel, Switzerland

Volume

5

fYear

1999

fDate

1999

Firstpage

240

Abstract

On-site testing has often been requested by the utilities following installation of new HV cables and also to check the condition of HV power transformers suspected of a damaged insulation. Specialized equipment for on-site tests has to withstand off-road transportation, to pass under road-bridges, be equipped with its own power source, and what is most difficult, to make measurements at HV substations which are notorious for intense electromagnetic interference. At present a HV resonant test set-up with the partial discharge (PD) measuring instrument and the C-tgδ bridge with built-in test voltage source are the most frequently used mobile test equipment. This paper presents a mobile HV resonant test set-up for installed cable testing and measuring instruments designed for on-site transformer insulation testing

Keywords

insulation testing; C-tgδ bridge; HV cables; HV insulation; HV power transformers; HV resonant test set-up; HV substations measurement; XLPE HV cables; built-in test voltage source; installed cable testing; measuring instruments; mobile HV resonant test set-up; off-road transportation; on-site testing equipment; on-site transformer insulation testing; partial discharge measuring instrument; power source;

fLanguage

English

Publisher

iet

Conference_Titel

High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)

Conference_Location

London

ISSN

0537-9989

Print_ISBN

0-85296-719-5

Type

conf

DOI

10.1049/cp:19990930

Filename

818282