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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Specification for radio disturbance and immunity measuring apparatus and methods—Part 4-1:Uncertainties,statistics and limit modelling—Uncertainties in standardized EMC tests
WITHDRAWN published on 5.9.2007
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods—Part 4-2:Uncertainties,statistics and limit modelling—Measurement instrumentation Uncertainty
WITHDRAWN published on 6.3.2006
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods—Part 4-2:Uncertainties,statistics and limit modelling—Measurement instrumentation uncertainty
WITHDRAWN published on 15.3.2018
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods—Part 4-3:Uncertainties,statistics and limit modelling—Statistical considerations in the determination of EMC compliance of mass-produced
WITHDRAWN published on 5.9.2007
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods—Part 4-4:Uncertainties,statistics and limit modelling—Statistics of complaints and a model for the calculation of limits
WITHDRAWN published on 5.9.2007
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-5: Uncertainties, statistics and limit modelling - Conditions for the use of alternative test methods
WITHDRAWN published on 23.12.2010
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WITHDRAWN published on 1.1.1985
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WITHDRAWN published on 1.1.1985
Selected format:Series capacitors for power systems—Part 1:General—Performance,testing and rating—Safety requirements—Guide for installation
WITHDRAWN published on 20.1.1998
Selected format:Series capacitors for power systems—Part 2:Protective equipment for series capacitor banks
WITHDRAWN published on 8.10.2002
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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