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Original scientific paper

Diagnostic measurements on instrument transformers – Part I

Florian Predl ; Omicron, Austria
Michael Freiburg ; Omicron, Austria
Martin Anglhuber ; Omicron, Austria


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Abstract

The article presents the most common diagnostic measurements on instrument transformers (current and voltage transformers) used to assess their condition and reliability. The measurements reveal possible failures which can occur due to aging processes during the lifetime of an instrument transformer. The failures are either related to the transformers’ electro-magnetic circuit (for example, short, or open circuits) or to their insulation (for example, partial discharge, moisture ingress). Case studies are presented to underline the importance of conducting regular diagnostic tests.

Keywords

instrument transformer; electro-magnetic circuit; insulation; diagnostic tests

Hrčak ID:

167114

URI

https://hrcak.srce.hr/167114

Publication date:

8.10.2016.

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