STM PDF

Directly heated negative temperature coefficient thermistors - Part 1: Generic specification. Original standard IEC 60539-1-2016 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60539-1-2022

Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors. Original standard IEC 60539-2-2010 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60539-2-2019

Application guide for on-load tap-changers. Original standard IEC 60542-1976 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC IEEE 60214-2-2019

Informative guide for subjective listening tests. Original standard IEC 60543-1976 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Guide for determining the effects of ionizing radiation on insulating materials - Part 3: Test procedures for permanent effects. Original standard IEC 60544-3-1979 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Electrical insulating materials - Determination of the effects of ionizing radiation - Part 5: Procedures for assessment of ageing in service. Original standard IEC 60544-5-2011 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60544-5-2022