IEC 60034-3:2005

This guide should be used in conjunction with IEC 60034-3. It presents guidance on some design features and operating procedures intended to avoid the occurrence, or ignition, of an ignitable mixture of hydrogen and air, either in the machine itself or associated equipment.

Applies to three-phase turbine-type machines, with rated outputs of 10 MVA and above, used as generators. The contents of the corrigendum of December 1997 have been included in this copy.

Applies to three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Provides common requirements as well as specific requirements for air, hydrogen or liquid cooled synchronous generators and supplements the basic requirements given in IEC 60034-1. Gives also the precautions to be taken when using hydrogen cooled generators. The scope of this new edition has been limited with respect to the previous edition.