scope:

This guide covers general recommendations for the operation, loading, and maintenance of hydro-generators and generator/ motors (pump/turbines), having salient pole rotors and conventional cooling systems (as distinct from conductor-cooling systems). It does not apply to generators having cylindrical rotors. In this guide, the term hydro-generator is used to describe a generator driven by a hydraulic turbine or water wheel.

This guide is not intended to supplant specific or general instructions contained in the manufacturer's instruction book or in any contractual agreement between the manufacturer and the purchaser of a given machine.

Equipment manufacturers have taken different approaches to the solution of design problems, and it is not practical to discuss all the variations of machine design. However, many of the operational and maintenance problems are common to all the designs, and recommendations can be given concerning solutions to these problems. The most that the guide can accomplish is to provide guideposts, which, on one hand, disclose accepted and tried values or methods and, on the other hand, give warnings where hazards might be encountered. The guide is not intended to apply in any way to the prime mover.