IEC 60034-3:20 20适用于由蒸汽轮机或燃气轮机驱动的额定输出为10 MVA及以上的大型三相同步发电机。还包括连接到电网的相同输出范围的同步Mvar补偿器，用于交换无功功率。本文件补充了IEC 60034-1中给出的旋转机械的基本要求。 这第七版取消并取代了2007年出版的第六版。与上一版相比，此版本包括以下重大技术变更: -标题已修改； -范围扩大到同步补偿器； -增加了转子过电流要求； -介绍了定子谐波对转子不平衡负载能力的影响； -增加了同步要求； -针对燃气轮机应用修订的温度或温升的调整； -更新了辅助设备的要求。

IEC 60034-3:2020 applies to large three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Also included are synchronous Mvar compensators of the same output range connected to a grid for the purpose of exchanging reactive power. This document supplements basic requirements for rotating machines given in IEC 60034-1.
This seventh edition cancels and replaces the sixth edition published in 2007. This edition includes the following significant technical changes with respect to the previous edition:
- title modified;
- scope extended to synchronous compensators;
- rotor overcurrent requirements added;
- impact of stator harmonics on rotor unbalanced load capability introduced;
- synchronisation requirements added;
- adjustments of temperatures or temperature rise revised for gas turbine applications;
- requirements for auxiliaries updated.