Electrical Transformers and Power EquipmentThis 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. |
Contents
THEORY OF OPERATION | 5 |
TRANSFORMER CONSTRUCTION | 22 |
Coordination | 38 |
Copyright | |
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alternating current ammeter amperes arcing horns askarels autotransformer auxiliary battery bushing capacitors cause cell Check circuit breakers clean closed coil conductor cooling core current flowing current transformers delta delta connection disconnected distribution transformers electric electrolyte element energy equipment fault current Figure flashover fuse gaskets ground H₁ H2 H₂ heat high-voltage impedance indicate induction installed instrument insulation interrupting leads lightning arrester load current low-voltage magnetic field maintenance maximum measured mechanism Megger meter mounted normal operation overcurrent relays phase plates porcelain position potential transformers primary protective relays rated ratio reactance reclosers rectifier replace resistance secondary voltage secondary winding short-circuit shown in Fig single-phase transformers stationary contacts sulphur hexafluoride supply surge tank temperature terminals three-phase transformers trans transformers connected trip tube two-phase two-winding transformer units usually values valve volt-amperes voltage drop voltmeter volts wattmeter wire X₁