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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
Common specifications for high-voltage switchgear and control gear standards
WITHDRAWN published on 10.10.1999
Selected format:Common specifications for high-voltage switchgear and controlgear standards
WITHDRAWN published on 30.12.2011
Selected format:Test guide of SF6 gas tightness for high-voltage switchgear
WITHDRAWN published on 31.3.1989
Selected format:Endurance test of high voltage shunt capacitors
WITHDRAWN published on 1.1.1989
Selected format:Shunt capacitors for a.c. power systems having a rated voltage above 1kV—Part 1:General—Performance, testing and rating—Safety requirements—Guide for installation and operation
WITHDRAWN published on 12.7.2001
Selected format:Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V—Part 1:General
WITHDRAWN published on 2.9.2010
Selected format:Shunt capacitors for a.c. power systems having a rated voltage above 1kV—Part 2:Endurance testing
WITHDRAWN published on 2.11.2001
Selected format:Shunt capacitors for a.c.power systems having a rated voltage above-1kV—Part 3:Protection of shunt capacitors and shunt capacitor banks
WITHDRAWN published on 2.11.2001
Selected format:Shunt capacitors for a.c. power systems having a rated voltage above 1kV—Part 4:Internal fuses
WITHDRAWN published on 2.11.2001
Selected format:Internal fuses and internal overpressure disconnectors for shunt capacitors
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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