This International Standard establishes the basis for estimating the ageing of electrical
insulation systems (EIS) under conditions of either electrical, thermal, mechanical,
environmental stresses or combinations of these (multifactor stresses).
It specifies the principles and procedures that shall be followed, during the development of
EIS functional test and evaluation procedures, to establish the estimated service life for a
specific EIS.
This standard should be used by all IEC technical committees responsible for equipment
having an EIS.