IEC 60034-28:2012适用于IEC 60072-1中规定的机架号为56至400的三相低压笼型感应电动机。本标准建立了从测试中获得单相等效电路图元素值的程序，并定义了这些图的标准元素。与上一版相比，此版本包括以下重大技术变更: -现在给出了等效星形连接等效电路图的所有公式； -增加了从负载曲线测试中确定等效电路参数的程序，作为反向旋转和锁定转子测试的替代方法。

IEC 60034-28:2012 applies to three-phase low-voltage cage induction motors of frame numbers 56 to 400 as specified in IEC 60072-1. This standard establishes procedures to obtain values for elements of single phase equivalent circuit diagrams from tests and defines standard elements of these diagrams. This edition includes the following significant technical changes with respect to the previous edition:
- the formulae are now all given for equivalent star-connection equivalent circuit diagrams;
- procedures for the determination of equivalent circuit parameters from a load curve test as an alternative to the reverse rotation and locked rotor tests have been added.