IEC Technical Committee 109: Standards on insulation co-ordination for low-voltage equipment
This presentation was prepared to describe the IEC Technical Committee 109 and the related Technical Committee 42 approaches on insulation coordination. The IEC TC 109 approach is then compared with the isolation (insulation) test entries of IEEE std. 802.3, IEC 60950-1 and GR-1089-CORE, Issue 7. The preferred values of insulation test withstand voltage are established, together with 1.2/50 impulse reference options and test procedure options.