Technical brochure
TB 878 WG A1.48

Guidance on high-speed testing of turbo generator rotors

Engineers responsible for generator maintenance are often posed with the difficult question of whether to send the rotor off-site for high-speed balancing and testing or not. It is generally considered that by doing so is the lower risk option, however there can be substantial operational and financial pressures against doing so. This guide aims to provide operators with information required to help them make informed decisions as to whether to carry out high speed testing of generator rotors following repair or maintenance. The practice varies substantially across the world and engineers can be presented with difficult decisions to make under financial pressure.

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Rotating electrical machines

This Technical Brochure has been created by a Working Group from the CIGRE Rotating electrical machines Study Committee which is one of CIGRE's 16 domains of work.
The SC is focused on the development of new technologies and the international exchange of information and knowledge in the field of rotating electrical machines, to add value to this information and knowledge by means of synthesizing state-of-the-art practices and developing guidelines and recommendations.

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