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See Chinese contents: GB/T 22712-2021 GB/T 22712-2021: Technical specification for G series cooling fans applying to variable frequency motors
This document stipulates the type, basic parameters and dimensions, technical requirements, test methods, inspection rules, marking, packaging and warranty period for G series cooling fans for YVF2 series (IP54) three-phase asynchronous motors powered by frequency converters. This document applies to G series cooling fans (axial flow) for YVF2 series (IP54) three-phase asynchronous motors powered by frequency converters (hereinafter referred to as ¡°fan¡±); for other series of three-phase asynchronous motors powered by frequency converters, this document applies as a reference for the selection of fans. It can also be implemented as a reference for all kinds of fans derived from this fan.
