Application of voltage response measurement on low voltage cables

Author

Tamus, Z. Á ; Berta, I.

Author_Institution

Budapest Univ. of Technol. & Econ., Budapest, Hungary

fYear

2009

fDate

May 31 2009-June 3 2009

Firstpage

444

Lastpage

447

Abstract

The application of voltage response measurement is a very effective tool to determine of the aging state of oil-paper insulated cables. The initial slope of the decay voltage is directly proportional to the conductivity of the insulation and the initial slope of the return voltage is proportional to the intensity of polarization processes. Therefore, the two main deterioration processes (moistening and thermal aging) of oil-paper insulation can be examined independently. In this paper, the application of voltage response method is examined on laboratory aged low voltage polymeric (PVC and PE) insulated cables and the results were compared to the results of chemical and breakdown tests. By the using of voltage response method the aging state of the insulation i.e. the probable decrease of dielectric strength can be detected.

Keywords

ageing; cable insulation; electric breakdown; electric strength; insulation testing; insulator contamination; moisture; polyethylene insulation; polymer insulators; PE insulation; PVC insulation; aging state; breakdown test; chemical test; deterioration processes; dielectric strength; low voltage cables; low voltage polymeric insulated cables; moisture effect; oil-paper insulated cables; thermal aging; voltage response measurement; Aging; Breakdown voltage; Cable insulation; Conductivity; Dielectrics and electrical insulation; Laboratories; Low voltage; Oil insulation; Polarization; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference, 2009. EIC 2009. IEEE

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-3915-7

Electronic_ISBN

978-1-4244-3917-1

Type

conf

DOI

10.1109/EIC.2009.5166387

Filename

5166387