GB/T 21974-2008 in English

《GB/T 21974-2008YZRW系列起重及冶金用涡流制动绕线转子三相异步电动机技术条件》由TC26（全国旋转电机标准化技术委员会）归口，TC26SC3（全国旋转电机标准化技术委员会起重冶金和屏蔽电机分会）执行，主管部门为中国电器工业协会。
本标准规定了YZRW系列起重及冶金用涡流制动绕线转子三相异步电动机的术语和定义、型式、基本参数与尺寸、技术要求、检验规则与试验方法以及标志、包装及保用期的要求。本标准适用于各种起重机械及冶金辅助设备电力传动用涡流制动绕线转子三相异步电动机及其涡流制动器，凡属本系列涡流制动电动机所派生的各种电动机亦可参照执行。

Scope

This standard specifies the terms and definitions, types, basic parameters and dimensions, technical requirements, inspection rules and test methods of YZRW series hoisting and metallurgical three-phase asynchronous motors with eddy current brake wound rotors, as well as signs, packaging and guarantee period. Require. This standard is applicable to three-phase asynchronous motors with eddy current brakes and wound rotors (hereinafter referred to as eddy current brake motors) and their eddy current brakes for power transmission of various lifting machinery and metallurgical auxiliary equipment. Various motors can also be implemented by reference.