GB 19212.1-2003 Safety of power transformers, power supply units and similar—Part 1:General requirements and tests

GB 13028-1991 Isolating transformers and safety isolating transformers Requirements

GB 19212.1-2008 Safety of power transformers,power supplies,reactors and similar products—Part 1:General requirements and tests

GB/T 7676.4-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 4:Special requirements for frequency meters GB/T 7676.5-1998 Direct acting indicating analogue electrical measuring instruments and their accessories Part 5:Special requirements for phase meters,power factor meters and synchroscopes GB/T 7676.5-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 5:Special requirements for phase meters,power factor meters and synchroscopes GB/T 7676.6-1998 Direct acting indicating analogue electrical measuring instruments and their accessories Part 6:Special requirements for ohmmeters(impedance meters) and conductance meters GB/T 7676.6-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 6:Special requirements for ohmmeters(impedance meters) and conductance meters GB/T 7676.7-1998 Direct acting indicating analogue electrical measuring instruments and their accessories Part 7:Special requirements for multi-function instruments GB/T 7676.7-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 7:Special requirements for multi-function instruments GB/T 7676.8-1998 Direct acting indicating analogue electrical measuring instruments and their accessories Part 8:Special requirements for accessories GB/T 7676.8-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 8:Special requirements for accessories GB/T 7676.9-1998 Direct acting indicating analogue electrical measuring instruments and their accessories Part 9:Recommended test methods GB/T 7676.9-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 9:Recommended test methods GB 8898-1997 GB 9364.1-1997 Miniature fuses—Part 1:Definitions for miniature fuses and general requirement for miniature fuse-links GB/T 9364.1-2015 Miniature fuses—Part 1:Definitions for miniature fuses and general requirement for miniature fuse-links GB/T 9364.2-1997 Miniature fuses—Part 2:Cartridge fuse-links GB/T 9364.2-2018 Miniature fuses—Part 2:Cartridge fuse-links GB/T 9364.3-1997 Miniature fuses—Part 3:Sub-miniature fuse-links GB/T 9364.3-2018 Miniature fuses—Part 3:Sub-miniature fuse-links GB 9364.4-2006 Miniature fuses—Part 4:Universal modular fuse-links (UMF) GB/T 9364.4-2016 Miniature fuses—Part 4:Universal modular fuse-links (UMF)—Through-hole and surface mount types GB/T 9364.5-2011 Miniature fuses—Part 5:Guidelines for quality assessment of miniature fuse-links GB/T 9364.5-2025 Miniature fuses—Part 5:Guidelines for quality assessment of miniature fuse-links GB/T 9364.6-2001 Miniature fuses—Part 6:Fuse-holders for miniature cartridge fuse-links GB/T 9364.6-2023 Miniature fuses—Part 6:Fuse-holders for miniature fuse-links GB/T 9364.7-2016 Miniature fuses—Part 7:Miniature fuse-links for special applications GB/T 9364.8-2023 Miniature fuses—Part 8:Fuse resistors with particular overcurrent protection GB/T 9364.10-2013 Miniature fuses—Part 10:User guide for miniature fuses GB/T 9364.11-2016 Miniature fuses—Part 11:Fuse-links for LED lamps GB 9816-1998 Thermal-links-Requirements and application guide GB 10963-1999 Circuit-breakers for overcurrent protection for household and similar installation GB/T 11020-1998 GB/T 11021-1989 GB/T 11026.1-2003 Electrical insulating materials-Properties of thermal endurance—Part 1:Ageing procedures and evaluation of test results GB/T 11026.1-2016 Electrical insulating materials—Thermal endurance properties—Part 1:Ageing procedures and evaluation of test results GB/T 11026.2-2000 Guide for the determination of thermal endurance properties of electrical insulating materials Part 2:Choice of test criteria GB/T 11026.2-2012 Electrical insulating materials—Thermal endurance properties—Part 2:Choice of test criteria GB/T 11026.3-2006 Electrical insulating materials—Thermal endurance properties—Part 3:Instructions for calculating thermal endurance characteristics GB/T 11026.3-2017 Electrical insulating materials—Thermal endurance properties—Part 3:Instructions for calculating thermal endurance characteristics GB/T 11026.3-2025 Electrical insulating materials—Thermal endurance properties—Part 3:Instructions for calculating thermal endurance characteristics GB/T 11026.4-1999 Guide for the determination of thermal endurance properties of electrical insulating materials—Part 4:Ageing ovens—Single-chamber ovens GB/T 11026.4-2012 Electrical insulating materials—Thermal endurance properties—Part 4:Ageing ovens—Single-chamber ovens GB/T 11026.5-2010 Electrical insulating materials—Thermal endurance properties—Part 5:Ageing ovens—Precision ovens for use up to 300 ℃ GB/T 11026.6-2010 Electrical insulating materials—Thermal endurance properties—Part 6:Ageing ovens—Multi-chamber ovens GB/T 11026.7-2014 Electrical insulating materials—Thermal endurance properties—Part 7:Determination of relative thermal endurance index(RTE)of insulating material GB/T 11026.7-2025 Electrical insulating materials—Thermal endurance properties—Part 7:Determination of relative temperature index(RTI)of an insulating material GB/T 11026.8-2014 Electrical insulating materials—Thermal endurance properties—Part 8:Determination of thermal endurance indices(TI and RTE)of an insulating material using the fixed time frame method GB/T 11026.8-2025 Electrical insulating materials—Thermal endurance properties—Part 8:Determination of thermal endurance indices(TI and RTI) of an insulating material using the fixed time frame method GB/T 11026.9-2016 Electrical insulating materials—Thermal endurance properties—Part 9:Instructions for calculating thermal endurance characteristics using simplified procedures GB/T 11026.10-2019 Electrical insulation materials—Thermal endurance properties—Part 10:Accelerated determination of relative thermal endurance using analytical test methods(RTEA)—Instructions for calculations based on activation energy GB/T 11918-2001 Plugs, socket-outlets and couplers for industrial purposes—Part 1:General requirements GB/T 11918.1-2014 Plugs,socket-outlet and couplers for industrial purposes—Part 1:General requirements GB/T 11918.1-2025 Plugs,fixed or portable socket-outlets and appliance inlets for industrial purposes—Part 1:General requirements GB/T 11918.2-2014 Plug, socket-outlets and couplers for industrial purposes—Part 2:Dimensional compatibility and interchangeability requirements for pin and contact-tube accessories GB/T 11918.2-2025 Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes—Part 2:Dimensional compatibility requirements for pin and contact-tube accessories GB/T 11918.4-2014 Plugs,socket-outlets and couplers for industrial purposes—Part 4:Switched socket-outlets and connectors with or without interlock GB/T 11918.4-2025 Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes—Part 4:Switched socket-outlets with or without interlock GB/T 11918.5-2020 Plugs,socket-outlets and couplers for industrial purposes—Part 5:Dimensional compatibility and interchangeability requirements for plugs,socket-outlets, ship connectors and ship inlets for low-voltage shore connection systems (LVSC) GB/T 11918.6-2025 Plugs,socket-outlets and couplers for industrial purposes—Part 6:Direct current(DC) plugs,socket-outlets and connectors for ship and shore power supply system GB/T 11919-2001 Plugs, socket-outlets and couplers for industrial purposes—Part 2:Dimensional interchangeability requirements for pin and contact-tube accessories GB/T 12113-1996 Methods of measurement of touch-current and protective conductor current GB/T 12501.2-1997 Classification of electrical and electronic equipment with regard to protection against electric shock—Part 2:Guidelines to requirements for protection against electric shock GB 13140.1-1997 Connecting devices for low voltage circuits for household and similar purposes Part 1:General requirements GB 13140.2-1998 Connecting devices for low voltage circuits for household and similar purposes Part 2:Particular requirements for connecting devices as separate entities with screw-type clamping units GB 13140.3-1998 Connecting devices for low voltage circuits for household and similar purposes Part 2:Particular requirements for connecting devices as separate entities with screwless-type clamping units GB 13539.3-1999 Low-voltage fuses—Part 3:Supplementary requirements for fuses for use by unskilled person (fuses for mainly for household and similar apllication) GB/T 13539.5-1999 Low-voltage fuses Part 3:Supplementary requirements for fuses for use by unskilled persons (fuses for mainly for household and similar application)—Examples of standardized fuses GB 14048.7-1998 low-voltage switchgear and controlgear Ancillary equipment Section 1:Terminal blocks for copper conductors GB/T 14-1998 Cup head square neck bolts with large head—Product grade C GB/T 14-2013 Mushroom head square neck bolts

IEC 61558-1:1998