IEC 60422:2013 gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment. This International Standard is applicable to mineral insulating oils, originally supplied conforming to IEC 60296, in transforme
DS/EN 60422:2013 history
2013DS/EN 60422:2013 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance
2006DS/EN 60422:2006 Mineral insulating oils in electrical equipment - Supervision and maintenance guidance