Electrical Transformers and Power Equipment
This book provides a comprehensive resource on technical, application and operational aspects of all types of electrical transformers and power systems, covering operation theory; transformer construction, installation, operation and maintenance; principal transformer connections; transformer types; troubleshooting; circuit breakers; disconnecting devices; fuses; lightning or surge arrestors; protective relays; storage batteries; reactors; capacitors; rectifiers; instruments; and insulation. Illustrations and diagrams are included throughout the written presentation.
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THEORY OF OPERATION
OPERATION AND MAINTENANCE
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adjustment air-break switches alternating current ammeter amperes arcing horns arrester askarel autotransformer auxiliary bushing capacitors cause cell Check circuit breakers clean closed coil conductor cooling coordination copper losses core current ﬂowing current transformers delta delta connection dielectric strength discharge disconnect electric electrolyte element energy equipment fault current Figure fuse ground heat high-voltage impedance indicate induction installed instrument insulation interrupting latch lead lightning losses low-voltage magnetic field maintenance maximum measured mechanism Megger metal meter mounted normal oil circuit breakers operation overcurrent relays phase plates polarity porcelain position power factor primary protective relays rated ratio reactance reactors recloser rectifier replace resistance secondary winding short-circuit shown in Fig single-phase single-phase transformers spring stationary contacts storage battery supply surge tank temperature terminals three-phase transformers trip tube unit usually values valve volt-amperes voltage drop voltmeter volts watt-hour meter wattmeter wire