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GB - Chinese national standards - Page 7537

Standards GB - Chinese national standards - Page 7537

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

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Preview GB 311.1-1997 3.7.1997

GB 311.1-1997 WITHDRAWN

Insulation co-ordination for high voltage transmission and distribution equipment

WITHDRAWN published on 3.7.1997

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Preview GB 311.2-1983 1.1.1983

GB 311.2-1983 WITHDRAWN

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WITHDRAWN published on 1.1.1983

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Preview GB/T 311.2-2002 8.10.2002

GB/T 311.2-2002 WITHDRAWN

Insulation co-ordination—Part 2:Application guide for insulation co-ordination for high voltage transmission and distribution equipment

WITHDRAWN published on 8.10.2002

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Preview GB 311.3-1983 1.1.1983

GB 311.3-1983 WITHDRAWN

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WITHDRAWN published on 1.1.1983

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Preview GB/T 311.3-2007 3.12.2007

GB/T 311.3-2007 WITHDRAWN

Insulation co-ordination—Part 3:Procedures for high-voltage direct current(HVDC) converter stations

WITHDRAWN published on 3.12.2007

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Preview GB 311.4-1983 1.1.1983

GB 311.4-1983 WITHDRAWN

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WITHDRAWN published on 1.1.1983

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Preview GB 311.5-1983 1.1.1983

GB 311.5-1983 WITHDRAWN

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WITHDRAWN published on 1.1.1983

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Preview GB/T 311.6-1983 20.4.1964

GB/T 311.6-1983 WITHDRAWN

High voltage test techniques--Part 5:Sphere-gaps for voltage measurment

WITHDRAWN published on 20.4.1964

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Preview GB/T 311.7-1988 1.1.1988

GB/T 311.7-1988 WITHDRAWN

Application guide for insulation co-ordination of high voltage transmission and transformation equipment

WITHDRAWN published on 1.1.1988

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Preview GB 311.7-1988 20.6.1988

GB 311.7-1988 WITHDRAWN

Application guide for insulation co-ordination of high voltage transmission and transformation equipment

WITHDRAWN published on 20.6.1988

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