Physical fundamentals of insulation design for low-voltage equipment

Author

Stimper, Klaus

Author_Institution

Erlangen-Nurnberg Univ., West Germany

Volume

25

Issue

6

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

1097

Lastpage

1103

Abstract

Insulation coordination for low-voltage equipment has been an important concern of several international committees. The reports 664 and 664A of the International Electrical Commission (IEC) gave the basis for thorough investigations in 1980 and 1981. About 30000 insulators have been observed for several years under various voltages. Insulation resistance and electrical strength were measured and have provided ≈10⁶ data points. These results were evaluating using statistical methods. In addition, a research program was carried out to quantify the influence of insulating materials, environmental conditions, and the design of the insulating systems on the long-term insulation behavior. The final results are intended to support the drafting of scientifically founded, revised standards on insulation coordination in the IEC

Keywords

electric strength; insulating materials; insulation; insulation testing; standards; IEC; International Electrical Commission; electrical strength; environmental conditions; insulating materials; insulation coordination; insulation design; insulators; low-voltage equipment; statistical methods; Conductivity; Dielectrics and electrical insulation; Electric resistance; Electrical resistance measurement; Humidity; IEC standards; Insulation testing; International Committee; Low voltage; Surface resistance;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.64495

Filename

64495