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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
Electrical safety in low voltage distribution systems up to 1000V a.c. and 1500V d.c.—Equipment for testing, measuring or monitoring of protective measuring—Part 2:Insulation resistance
WITHDRAWN published on 25.11.2002
Selected format: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—Part 2:Insulation resistance
WITHDRAWN published on 5.11.2012
Selected format: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—Part 3:Loop impedance
WITHDRAWN published on 11.10.2007
Selected format: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—Part 3:Loop impedance
WITHDRAWN published on 5.11.2012
Selected format:Electrical safety in low voltage distribution systems up to 1 000 V a.c—Equipment for testing, measuring or monitoring of protective measures—Part 4:Resistance of earth connection and equipotential bonding
WITHDRAWN published on 11.10.2007
Selected format: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—Part 4:Resistance of earth connection and equipotential bonding
WITHDRAWN published on 5.11.2012
Selected format: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—Part 5:Resistance to earth
WITHDRAWN published on 11.10.2007
Selected format: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—Part 5:Resistance to earth
WITHDRAWN published on 5.11.2012
Selected format:Laser safety signs
WITHDRAWN published on 17.9.2000
Selected format:Identification of major hazard installations
WITHDRAWN published on 17.9.2000
Selected format:Latest update: 2024-09-25 (Number of items: 2 350 354)
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