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EVS-EN 60567:2011

Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance

General information

Withdrawn from 01.02.2024
Base Documents
IEC 60567:2011; EN 60567:2011
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.02.2024
Main
04.01.2012
Main
Main
EVS-EN 60567:2005
This International Standard deals with the techniques for sampling free gases from gascollecting relays from power transformers. Three methods of sampling free gases are described. The techniques for sampling oil from oil-filled equipment such as power and instrument transformers, reactors, bushings, oil-filled cables and oil-filled tank-type capacitors are no longer covered by this standard, but are instead described in 4.2 of IEC 60475:2011. Before analysing the gases dissolved in oil, they are first extracted from the oil. Three basic methods are described, one using extraction by vacuum (Toepler and partial degassing), another by displacement of the dissolved gases by bubbling the carrier gas through the oil sample (stripping) and the last one by partition of gases between the oil sample and a small volume of the carrier gas (headspace). The gases are analysed quantitatively after extraction by gas chromatography; a method of analysis is described. Free gases from gas-collecting relays are analysed without preliminary treatment.

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