MAINTAINING ELECTRO-HYDRAULIC-CONTROL (EHC) SYSTEMS FOR TURBINE GENERATORS USING PHOSPHATE ESTER EHC FLUID

The reliability of electro-hydraulic-controlled (EHC) turbine generato rs can be increased by properly maintaining the hydraulic system and f luid. With increasing cost of production downtime and energy, the dema nd for reliable turbine generator operation becomes more prevalent yea r after year. The purpose of this paper is to describe the necessary r equirements for maintaining the electro-hydraulic system through prope r care of the phosphate ester fluid. In addition, this paper will addr ess the expected results of operating a system with contaminated fluid and the cleanup of a contaminated system.