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Standards GB - Chinese national standards - Page 80
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 11026.2-2012
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Electrical insulating materials - Thermal endurance properties - Part 2: Choice of test criteria
Standard published on 31.12.2012
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GB/T 11026.3-2017
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Electrical insulating materials—Thermal endurance properties —Part 3: Intrucations for calculating thermal endurance characteristics
Standard published on 29.12.2017
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GB/T 11026.3-2025
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Electrical insulating materials—Thermal endurance properties—Part 3: Instructions for calculating thermal endurance characteristics
Execute Date: may 2026
Standard published on 5.10.2025
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GB/T 11026.4-2012
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Elecrical insulating materials - Thermal endurance properties - Part 4: Ageing ovens - Single-chamber ovens
Standard published on 31.12.2012
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GB/T 11026.5-2010
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Electrical insulating materials - Thermal endurance properties - Part 5: Ageing ovens - Precision ovens for use up to 300
Standard published on 14.1.2011
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GB/T 11026.6-2010
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Electrical insulating materials - Thermal endurance properties - Part 6: Ageing ovens - Multi-chamber ovens
Standard published on 14.1.2011
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GB/T 11026.7-2014
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Electrical insulating materialsThermal endurance propertiesPart 7: Determination of relative thermal endurance index (RTE) of insulating material
Standard published on 6.5.2014
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GB/T 11026.7-2025
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Electrical insulating materials—Thermal endurance properties—Part 7: Determination of relative temperature index(RTI) of an insulating material
Execute Date: may 2026
Standard published on 5.10.2025
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GB/T 11026.8-2014
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Electrical insulating materialsThermal endurance propertiesPart 8: Determination of thermal endurance indices (TI and RTE) of an insulating material using the fixed time frame method
Standard published on 6.5.2014
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GB/T 11026.8-2025
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Electrical insulating materials—Thermal endurance properties—Part 8: Determination of thermal endurance indices (TI and RTI) of an insulating material using the fixed time frame method
Execute Date: may 2026
Standard published on 5.10.2025
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