page_viii

< previous page | page_viii | next page >

Page viii

| 11 Fuses |

| 199 |

| Principle of Operation |

| 199 |

| Power Fuses |

| 200 |

| Fuse Coordination |

| 200 |

| Fuse Construction |

| 203 |

| Expulsion Fuses |

| 209 |

| Fuses as Disconnects |

| 211 |

| Three-Shot Fuses |

| 212 |

| Selection of Fuses |

| 213 |

| Maintenance |

| 215 |

| Review |

| 216 |

| 12 Lightning or Surge Arresters |

| 218 |

| Function |

| 218 |

| Principle of Operation |

| 219 |

| Arrester Types |

| 219 |

| Valve Arresters |

| 219 |

| Ground Connection |

| 226 |

| Location of Arresters |

| 226 |

| Other Considerations |

| 226 |

| Insulation and Arrester Coordination |

| 228 |

| Review |

| 233 |

| 13 Protective Relays: Design and Construction |

| 235 |

| Function |

| 235 |

| Principles of Operation |

| 236 |

| Overcurrent Relays |

| 238 |

| Overcurrent Relay Design and Construction |

| 239 |

| Directional Relays |

| 245 |

| Differential Relays |

| 247 |

| Reclosing Relays |

| 250 |

| Auxiliary Relays |

| 252 |

| Electronic Relays |

| 254 |

| Transducers |

| 263 |

| Review |

| 263 |

| 14 Protective Relays: Operation and Maintenance |

| 265 |

| Zones of Protection |

| 265 |

| Distribution Circuits |

| 266 |

| Pilot Protection |

| 274 |

| Ground Relays |

| 279 |

| Relay Maintenance |

| 280 |

| Instrument Transformers |

| 284 |

| Review |

| 286 |

| 15 Storage Batteries |

| 289 |

| Control Systems |

| 289 |

| Function |

| 290 |

| Principle of Operation |

| 290 |

| Lead Storage Battery |

| 291 |

| Alkaline Storage Battery |

| 294 |

| Construction |

| 296 |

| Ratings of Batteries |

| 300 |

| Operation |

| 300 |

| Maintenance |

| 305 |

| Review |

| 309 |

| 16 Reactors, Capacitors, Rectifiers |

| 311 |

| Reactors |

| 311 |

| Capacitors |

| 314 |

| Rectifiers |

| 319 |

| Review |

| 332 |

< previous page | page_viii | next page >