GB - Chinese national standards

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

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

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Measuring relays and protection equipment—Part 1:Common requirements

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Electrical relays—Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment—Section 3: Seismic tests

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Measuring relays and protection equipment—Part 24:Common format for transient data exchange(COMTRADE) for power systems

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Measuring relays and protection equipment—Part 26:Electromagnetic compatibility requirements

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Measuring relays and protection equipment—Part 27:Product safety requirements

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General specification for transformer protection equipment

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Technical requirements for power system continuous recorder

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Specification for arc fiash protection equipment

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