BS EN IEC 61326-2-4-2021Electrical equipment for measurement, control and laboratory use. EMC requirements. Particular requirements. Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61

BS EN IEC 61326-2-4-2021Electrical equipment for measurement, control and laboratory use. EMC requirements. Particular requirements. Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557- 8 and for equipment for insulation fault location according to IEC 61557-9