This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and requirements for marking, packaging and warranty period of YD series (IP44) change-pole multi-speed three-phase induction motor.
This standard is applicable to YD series (IP44) change-pole multi-speed three-phase induction motor (frame size 80~280) (hereinafter referred to as the motor). All the series of motors derived from this series motor can be implemented by reference.