1 Scope
This standard specifies the protection devices for generator transformer groups The general technical conditions, inspection methods, inspection rules, and requirements for marking, packaging, transportation, and storage of the device (hereinafter referred to as the device).
This standard applies to generator transformer protection devices used in thermal power plants, hydropower plants, nuclear power plants, etc., and serves as the basis for the design, manufacturing, testing, and operation of the device. It also applies to the following protection devices:
- generator protection devices;
- main transformer protection devices used in power plants Protective devices; - High voltage auxiliary transformer protection device; - High voltage start/backup transformer protection device-- Excitation transformer/exciter protection device
2 Normative References
The following documents are essential for the application of this document.
. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this documentGB/T 191 Packaging, Storage and Transport Pictorial Symbols (GB/T 191-2008, ISO 780:1997, MOD)
GB/T 2423.1-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods, Test A Low Temperature (IEC 60068-2-1:2007, IDT)
GB/T 2423.2-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test B High Temperature (IEC 60068-2-22007, IDT)
GB/T 2423.3-2006 Environmental Testing for Electrical and Electronic Products: Part 2: Test Methods - Test Cab: Constant Damp Heat Test (IEC60068-2-78:2001, IDT)
GB/T 2423.4-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods: Test Db: Alternating Damp Heat (12h+12h Cycle) (IEC
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1. Telephone communication and confirmation of requirements
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1. The testing industry is fully covered, meeting different testing needs
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6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China