Experience with AC hipot and partial discharge tests for commissioning generating station cables and switchgear

Author

Gillespie, M.T.G. ; Murchie, G.B. ; Stone, G.C.

Author_Institution

Ontario Hydro, Toronto, Ont., Canada

Volume

4

Issue

3

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

392

Lastpage

396

Abstract

Test equipment is described which is suitable for AC hipot and partial discharge testing of 5 and 15 kV shielded cables of lengths up to about 600 m. The equipment can be used to test 5 and 15 kV metal-clad switchgear. Ontario Hydro´s experience at two nuclear generating stations using this AC test equipment is presented. The equipment can be used to assure the integrity of cable systems (less than 600 m long) already in service. The reasons for switching to AC testing of cable systems are outlined. Practical experience shows that the partial-discharge test is very effective in identifying installation problems in cables and switchgear. A number of problems are identified with the AC tests that a DC test would have missed

Keywords

cable testing; partial discharges; power cables; switchgear; switchgear testing; 5 to 15 kV; AC hipot testing; commissioning; generating station cables; nuclear generating stations; partial discharge tests; shielded cables; switchgear; AC generators; Cable insulation; Circuit testing; Partial discharges; Power cables; Power supplies; Switchgear; System testing; Test equipment; Voltage;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.43240

Filename

43240