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Standards GB - Chinese national standards - Page 210
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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GB/T 12665-2017
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Requirements of damp-heat testing of electrical machine for service in general environmental condition
Standard published on 1.11.2017
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GB/T 12666.1-2008
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Test method on a single wire or cable under fire conditions - Part 1: Vertical specimen flame test
Standard published on 30.6.2008
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GB/T 12666.2-2008
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Test method on a single wire or cable under fire conditions - Part 2: Horizontal specimen flame test
Standard published on 30.6.2008
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GB/T 12666.3-2008
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Test method on a single wire or cable under fire conditions - Part 3: Slanting specimen flame test
Standard published on 30.6.2008
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GB/T 12667-2012
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General specification for excitation assembly with semiconductors for synchronous motors
Standard published on 29.6.2012
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GB/T 12668.1-2002
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Adjustable speed electrical power drive systems--Part 1:General requirements--Rating specifications for low voltage adjustable speed d.c. power drive systems
Standard published on 25.11.2002
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GB/T 12668.2-2002
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Adjustable speed electrical power drive systems--Part 2:General requirements--Rating specifications for low voltage adjustable frequency a.c. power drive systems
Standard published on 5.8.2002
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GB/T 12668.2-2025
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Adjustable speed electrical power drive systems—Part 2: General requirements—Rating specifications for adjustable speed AC power drive systems
Execute Date: january 2027
Standard published on 31.12.2025
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GB/T 12668.3-2012
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Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods
Standard published on 31.12.2012
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GB/T 12668.3-2025
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Adjustable speed electrical power drive systems—Part 3: EMC requirements and specific test methods for PDS and machine tools
Execute Date: may 2026
Standard published on 5.10.2025
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