2021BS EN IEC 60172:2021 Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires
2015BS EN 60172:2015 Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires
BS EN IEC 60172:2021 Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires was changed to BS EN 60172:2015 Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires.