Direct relationship between breakdown strength and tracking index of composites

Author

Madsen, S.F. ; Holbøll, J. ; Henriksen, M.

Author_Institution

Orsted DTU, Electr. Power Eng., Lyngby

fYear

2006

fDate

11-14 June 2006

Firstpage

51

Lastpage

55

Abstract

The following paper shows a clear correlation between the measured tracking index and the breakdown field strength for noncoated glass fibre reinforced polymers (GFRP) with either a polyester or an epoxy based resin. 17 types of specimens have been tested according to IEC Publication 60587. The breakdown field strength of specimens cut from similar samples is determined by a new method capable of estimating the stressed volume. The results from the two tests are finally compared and incorporated in a single analytical formula. All test specimens are supplied by Danish manufacturers of wind turbine blades and are made under similar conditions and with the same materials and additives as used in the blade manufacture

Keywords

IEC standards; electric breakdown; epoxy insulation; glass fibre reinforced composites; materials testing; Danish manufacturer; IEC Publication 60587; additives; breakdown strength; composite material; epoxy resin; insulator testing; noncoated glass fibre reinforced polymer; polyester; tracking index; wind turbine blade; Blades; Electric breakdown; Glass; IEC standards; Manufacturing; Materials testing; Optical fiber testing; Polymers; Resins; Wind turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2006. Conference Record of the 2006 IEEE International Symposium on

Conference_Location

Toronto, Ont.

ISSN

1089-084X

Print_ISBN

1-4244-0333-2

Type

conf

DOI

10.1109/ELINSL.2006.1665255

Filename

1665255