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Standards GB - Chinese national standards - Page 431

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 14597-2010

Environmental climatic conditions appearing in different altitudes for electrical products

Standard published on 10.11.2010

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electronic design (pdf) (166.80 USD)

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166.80 USD

in 3 working days

GB/T 14598.118-2021

Measuring relays and protection equipment—Part 118: Synchrophasor for power systems—Measurements

Standard published on 31.12.2021

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electronic design (pdf) (1408.80 USD)

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1 408.80 USD

in 7 working days

GB/T 14598.121-2017

Measuring relays and protection equipment—Part 121:Functional requirements for distance protection

Standard published on 31.7.2017

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electronic design (pdf) (2926.80 USD)

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2 926.80 USD

in 15 working days

GB/T 14598.127-2013

Measuring relays and protection equipment—Part 127:Functional requirements for over/under voltage protection

Standard published on 19.7.2013

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electronic design (pdf) (520.80 USD)

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520.80 USD

in 3 working days

GB/T 14598.149-2016

Measuring relays and protection equipment—Part 149: Functional requirements for thermal electrical relays

Standard published on 24.2.2016

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electronic design (pdf) (832.80 USD)

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832.80 USD

in 4 working days

GB/T 14598.151-2012

Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection

Standard published on 31.12.2012

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electronic design (pdf) (640.80 USD)

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640.80 USD

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GB/T 14598.181-2021

Measuring relays and protection equipment—Part 181Functional requirements for frequency protection

Standard published on 31.12.2021

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electronic design (pdf) (1684.80 USD)

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1 684.80 USD

in 8 working days

GB/T 14598.1871-2024

Measuring relays and protection equipment—Part 187-1: Functional requirements for differential protection—Restrained and unrestrained differential protection of motors, generators and transformers

Standard published on 15.3.2024

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electronic design (pdf) (ON REQUEST)

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ON REQUEST

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GB/T 14598.2-2025

Measuring relays and protection equipment—Part 1:Common requirements

Standard published on 30.5.2025

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