GB/T 38658-2020
ActiveGuidance for the extension of validity of type tests of AC metal enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV
3.6 kV～40.5 kV交流金属封闭开关设备和控制设备型式试验有效性的延伸导则
Application Summary AI generated
This standard provides guidelines for extending the validity of type tests for AC metal-enclosed switchgear and controlgear operating between 3.6 kV and 40.5 kV. It is applied by manufacturers and testing laboratories to determine when modifications to a product design do not require a full retest, ensuring continued compliance with safety and performance requirements. The guidance is used in the electrical power industry for medium-voltage distribution equipment, such as switchgear panels in substations and industrial plants.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.