This International Standard specifies requirements for tests to determine the electrical insulation resistance of equipment intended for use in aircraft, together with a high voltage test. It relates the insulation requirements to four categories of equipment. This International Standard does not deal with the insulation testing of equipment installed in aircraft.
GSO ISO 2678:2016 history
2016GSO ISO 2678:2016 Environmental tests for aircraft equipment -- Insulation resistance and high voltage tests for electrical equipment