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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 installations of buildings—Part 5-53:Selection and erection of electrical equipment—Isolation, switching and control—Section 534:Devices for protection against overvoltages
WITHDRAWN published on 13.12.2004
Selected format:Electrical installations of buildings—Part 6-61:Verification—Initial verification
WITHDRAWN published on 13.7.2005
Selected format:Low-voltage electrical installations—Part 6:Verification
WITHDRAWN published on 29.6.2012
Selected format:Electrical installations of buildings-Part 7-710:Requirements for special installations or locations-Medical locations
WITHDRAWN published on 29.7.2005
Selected format:Electrical installations of buildings—Part 7-711:Requirements for special installations or locations—Exhibitions, shows and stands
WITHDRAWN published on 29.7.2005
Selected format:Electrical installations of buildings—Part 7:Requirements for special installations or locations—Section 705—Electrical installations of agricultural and horticultural premises
WITHDRAWN published on 1.12.2006
Selected format:Electrical installations of buildings—Part 7-714:Requirements for special installations or locations—External lighting installations
WITHDRAWN published on 19.9.2008
Selected format:Electrical installations of buildings Part 5:Selection and erection of electrical equipment Chapter 54:Earthing arrangements and protective conductors
WITHDRAWN published on 3.6.1997
Selected format:Electrical installations of buildings—Part 5-54:Selection and erection of electrical equipment-Earthing arrangements, protective conductors and protective bonding conductors
WITHDRAWN published on 14.5.2004
Selected format:Low-voltage electrical installations—Part 5-54: Selection and erection of electrical equipment—Earthing arrangements and protective conductors
WITHDRAWN published on 31.7.2017
Selected format:Latest update: 2025-11-13 (Number of items: 2 243 644)
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