IEEE 492-1999 pdf free download.IEEE Guide for Operation and Maintenance of Hydro-Generators.
Abstract: General recommendations for the operation, loading, and maintenance of synchronous hydrogenerators and generator/motors are covered. This guide does not apply to synchronous machines having cylindrical rotors. In this guide, the term hydro-generator is used to describe a synchronous machine coupled to a hydraulic turbine or pump-turbine. This guide is not intended to apply in any way to the prime mover.
Keywords: generator, generator/motor, horizontal hydro-generator, hydro-generator, loading, maintenance, operation, pumped-storage system, synchronous hydro-generator, vertical hydrogeneratorge.
1.1.1 Application
IEEE 492-1999 covers general recommendations for the operation, loading, and maintenance of synchronous hydro-generators and generator/motors. It does not apply to synchronous machines having cylindrical rotors. In this guide, the term hydro-generator is used to describe a synchronous machine coupled to a hydraulic turbine or pump-turbine. This guide is not intended to apply in any way to the prime mover.
1.1.2 Manufacturer’s instructions
IEEE 492-1999 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.
1.1.3 Limitations due to various designs
Equipment manufacturers have taken different approaches to the solution of design requirements; therefore, it is not practical to relate specifically in this guide to all the variations of machine design. However, many of the operational and maintenance procedures and problems are common to all the designs and, therefore, recommendations are given concerning solutions to these procedures and problems. The most that this document can accomplish is to provide guidelines, which, on one hand, disclose accepted and tried values or methods. and on the other hand, give warnings where hazards might he encountered.
1.2 Caution
1.2.1 Load conditions beyond design rating
It should he recognized that conditions more severe than those specified by the nameplate, instruction book, or any contractual agreement between the manufacturer and the purchaser should not be applied to the machine. If there is a need to exceed the specified conditions. it should he done only after a thorough study of the various considerations pertinent to the specific condition and also the capabilities of the machine and associated equipment. It is recommended that the situation be discussed with the manufacturer of the machine.
1.2.2 Reference publications
Many IEEE and ANSI standards are referenced in this guide. The standards reterenced in this revison are those in effect when this guide was approved. Users are cautioned to carefully review the history of older machines with respect to IEEE and ANSI standards in effect at the time the particular generator was manufactured. Older machines may not operate satisfactorily to the requirements of modern standards with regard to temperature rise, overload capability. abnormal operating conditions, etc.