Rotating electrical machines - Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines and for synchronous compensators

2Scope / Description

This part of IEC 60034 applies to large three-phase synchronous generators driven by steam turbines or gas turbines with a rated output of 10 MVA or more. It also includes synchronous reactive power compensators of the same capacity range connected to the grid for reactive power exchange. This document supplements the basic requirements for rotating electrical machines given in IEC 60034-1. General requirements for air, hydrogen, or liquid-cooled synchronous generators or compensators are specified together with the specific requirements. This document also provides precautions to be taken when using hydrogen to cool generators, including: rotating exciters driven by synchronous generators; auxiliary equipment required for generator operation; and building sections where hydrogen may accumulate. These requirements also apply to synchronous generators driven by both steam turbines and gas turbines as part of a single-shaft combined cycle unit. These requirements do not apply to synchronous generators driven by water turbines or wind turbines. Note: Precautions for using hydrogen apply to all situations where hydrogen is used as a coolant.