BS EN 61557-8:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems
CISPR 11 Amendment 2 - Requirements for semiconductor power converters (SPC)/ Improvement of repeatability for measurements in the frequency range 1-18 GHz*， 2019-01-18 Update
IEC 60068-2-1 Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60068-2-2 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60068-2-6 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
IEC 60691 Thermal-links - Requirements and application guide*， 2023-03-06 Update
IEC 60721-3-1 Classification of environmental conditions — Part 3-1: Classification of groups of environmental parameters and their severities — Storage*， 2018-02-23 Update
IEC 60721-3-2 Corrigendum 2 — Classification of environmental conditions — Part 3-2: Classification of groups of environmental parameters and their severities — Transportation and handling*， 2022-06-08 Update
IEC 60721-3-3 Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature*， 2019-05-22 Update
IEC 60947-5-1 Corrigendum 2 - Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices*， 2020-04-22 Update
IEC 60947-5-4 Amendment 1 - Low-voltage switchgear and controlgear - Part 5-4: Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests*， 2019-05-22 Update
IEC 61326-2-4 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insul*， 2020-10-27 Update
IEC 61557-1 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements*， 2019-07-26 Update
2015BS EN 61557-8:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems
2007BS EN 61557-8:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures - Insulation monitoring devices for IT systems