By Paul Gill
The second one variation of a bestseller, this definitive textual content covers all elements of checking out and upkeep of the gear present in electricity structures serving commercial, advertisement, software substations, and producing vegetation. It addresses useful features of routing trying out and upkeep and provides either the methodologies and engineering fundamentals had to perform those initiatives. it really is an important reference for engineers and technicians liable for the operation, upkeep, and trying out of strength process apparatus. accomplished insurance contains dielectric concept, dissolved fuel research, cable fault finding, flooring resistance measurements, and gear issue, dissipation issue, DC, breaker, and relay checking out tools.
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Extra resources for Electrical Power Equipment Maintenance and Testing,
The information in Chapter 4 on dissolved gas analysis is condensed from the IEEE std. 104-1991. , Cookville, Tennessee for providing an overall review and comments on Chapter 4. Alan Peterson of Utility Services and chairman of the NETA Technical Committee peer-reviewed many chapters for this revision and I thank him for his support. The information on ground resistance measurements and testing was supplied by AEMC Instruments, Boston, Massachusetts, and for which I thank them. In addition, I want to thank the following persons and organizations for contributing and providing information, material, and doing the peer review for the following portions of the book in this revision: Joe Mooney, manager of Power Engineering, Schweitzer Engineering Laboratories (SEL) who helped in writing, commissioning, and testing of microprocessor relays in Chapter 9 and reviewing that chapter; Noah Bethel of PdMA for providing material on the predictive maintenance guide on motors and variable frequency drives including photographs and illustrations, and for reviewing this section in Chapter 10; Dennis K.
4 Optimization of PM Intervals Experience in a variety of industries demonstrates that performing PM on an absolutely fixed schedule rarely results in the optimum balance among the costs of preventive and corrective maintenance and the safety and productivity benefits of equipment reliability and availability. indd 14 11/17/2008 12:17:15 PM Maintenance Strategies, Dielectric Theory 15 historical failure and maintenance database, reasonably straightforward methods can be used to optimize the PM cycle.
The purpose of an electrical preventive maintenance (EPM) and testing program should be to recognize these factors and provide means for correcting them. With an EPM and testing program, potential hazards that can cause failure of equipment or interruption of electrical service can be discovered and corrected. Also, the EPM program will minimize the hazards to life and equipment that can result from failure of equipment when it is not properly maintained. Properly maintained equipment reduces downtime by minimizing catastrophic failures.