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Diagnostic measurements on instrument transformers – Part II

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

Puni tekst: engleski pdf 3.972 Kb

str. 96-102

preuzimanja: 1.886



Part 1 of this article, published in Volume 3 Issue 4, pages 100ff, describes the measurements of excitation, winding resistance, turns ratio and accuracy as the most common diagnostic measurements on instrument transformers (current and voltage transformers) for condition and reliability assessment. Case studies show the failures which can be derived from the results and underline the importance of conducting regular diagnostic tests. Part 2 gives more details about the measurements of capacitance and dissipation/power factor, short circuit impedance, dielectric response analysis and partial discharge.

Ključne riječi

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

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