GB/T 22071.1-2018 Test guide for instrument transformers—Part 1:Current transformers

GB/T 22071.1-2008 Test guide for instrument transformers—Part 1:current transformers

GB/T 20840.2-2014 Instrument transformers—Part 2:Additional requirements for current transformers ISO 3231 GB/T 2421.1-2008 Environmental testing for electric and electronic products—General and guidance GB/T 2423.17-1993 Basic environmental testing procedures for electric and electronic products Test Ka:Salt mist GB/T 2423.17-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Test Ka:Salt mist GB/T 2423.17-2024 Environmental testing—Part 2:Test methods—Test Ka:Salt mist GB/T 2423.23-1995 Environmental testing for electric and electronic products Test Q:Sealing GB/T 2423.23-2013 Environmental testing—Part 2:Test methods—Test Q:Sealing GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 4756-1998 Petroleum liquids—Manual sampling GB/T 4756-2015 Method for manual sampling of petroleum liquids GB/T 5169.2-2002 Fire hazard testing for electric and electronic products—Part 2:Guidance for assessing the fire hazard—General guidelines GB/T 5169.2-2013 Fire hazard testing for electric and electronic products—Part 2:Guidance for assessing the fire hazard—General guidelines GB/T 5169.2-2021 Fire hazard testing for electric and electronic products—Part 2:Guidance for assessing the fire hazard—General guidelines GB/T 5169.9-1993 Fire hazard testing for electric and electronic products Guidance for the preparation of requirements and test specification for assessing fire hazard Guidance for use of preselection procedures GB/T 5169.9-2006 Fire hazard testing for electric and electronic products—Part 9:Guidance for assessing the fire hazard—Use of preselection testing procedures GB/T 5169.9-2013 Fire hazard testing for electric and electronic products—Part 9:Guidance for assessing the fire hazard—Preselection testing procedures—General guidelines GB/T 5169.9-2021 Fire hazard testing for electric and electronic products—Part 9:Guidance for assessing the fire hazard—Preselection testing procedures—General guidelines GB/T 5169.18-2005 Fire hazard testing for electric and electronic products—Part 18:Guidance on the minimization of toxic hazards due to fire involving electric and electronic products—General GB/T 5169.18-2013 Fire hazard testing for electric and electronic products—Part 18:Toxicity of fire effluent—General guidance GB 5585.1-1985 Copper or aluminium and its alloy bus bars for electrical purposes—Part 1:General GB/T 5585.1-2005 Copper or aluminium and its alloy bus bars for electrical purposes—Part 1:Copper and copper alloy bus bars GB/T 5585.1-2018 Copper or aluminium and its alloy bus bars for electrical purposes—Part 1:Copper and copper alloy bus bars GB/T 7354-2003 Partial discharge measurements GB/T 7354-2018 High-voltage test techniques—Partial discharge measurements GB 7674-1997 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above GB/T 7674-2008 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above GB/T 7674-2020 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above GB/T 11604-2015 Testing procedure of radio interference generated by high voltage equipment GB/T 16927.1-1997 High-voltage test techniques Part 1:General test requirements GB/T 16927.1-2011 High-voltage test techniques—Part 1:General definitions and test requirements GB/T 16927.2-1997 High-voltage test techniques Part 2:Measuring systems GB/T 16927.2-2013 High-voltage test techniques—Part 2:Measuring systems GB/T 19001-2000 Quality management systems—Requirements GB/T 19001-2008 Quality management systems—Requirements GB/T 19001-2016 Quality management systems—Requirements GB/T 20138-2006 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts(IK code) GB/T 20138-2023 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts(IK code) GB/T 20840.1-2010 Instrument transformers—Part 1:General requirements