Behavior of a machine insulation system during accelerated aging tests

authored by

M. Farahani, E. Gockenbach, H. Borsi, Martin Kaufhold

Abstract

The contribution presents results from extensive investigations on the behavior of a VPI machine test insulation system (thermal class F (155 °C)), which was subjected to a thermal overstress (175 °C) in repeated cycles. It will represent the thermal deteriorating effects of an insulation system in service on an accelerated basis. After each thermal cycle the insulation system is subjected to mechanical stress, moisture, and voltage. In order to check the condition of the insulation systems in a non-destructive manner several properties of insulation like dissipation factor, capacitance, insulating resistance and partial discharge quantities were measured after each thermal cycle. The results indicate how the changes in electrical and dielectric properties of insulation take place during the accelerated aging test.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

External Organisation(s)

Siemens AG

Type

Conference article

Journal

Conference Record of IEEE International Symposium on Electrical Insulation

Pages

404-407

No. of pages

4

ISSN

0164-2006

Publication date

2008

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Building and Construction, Electrical and Electronic Engineering

Electronic version(s)

https://doi.org/10.1109/ELINSL.2008.4570359 (Access: Unknown)