IEC 60034-30-3:20 24根据IEC 60034-1规定了定速三相高压笼型感应电动机的效率等级 -额定电压超过1 000 V，但不超过11 kV； -额定功率为200千瓦至2000千瓦； 本文件提供了额定电压高于1 000 V的三相笼式感应电动机能效等级的全球协调，这些电动机额定用于在50 Hz或60 Hz正弦电压电源下直接在线启动和定速运行。

IEC 60034-30-3:2024 specifies efficiency classes for fixed-speed three-phase high-voltage cage induction motors in accordance with IEC 60034-1 that
- have a rated voltage exceeding 1 000 V, but not exceeding 11 kV;
- have a rated power from 200 kW to 2 000 kW;
This document provides the global harmonization of energy-efficiency classes of three-phase cage induction motors with rated voltage above 1 000 V that are rated for direct online starting and fixed-speed operation at a 50 Hz or 60 Hz supply with sinusoidal voltage.