Page 615 - Handbook of Electrical Engineering

608 INDEX

Cables (Continued) Circuit breakers 154
Derating factors for ground temperature Four-pole for hazardous area supplies 365,
204 460
Directly buried 124, 199 Air-break 146
Ducts, trenches and direct burial 206 Comparison with fuses 162
Elastomer 187 Miniature 233
Emission of toxic gases and smoke 244, Molded case 154
245, 246 Sulphur hexafluoride 146, 147
Fire resistance 245 Vacuum 146, 147
Clearance time 178
Galvanised steel wire 198
For circuit breakers 277
Halogen gas 245
Of fault current 532
Heavy-duty polymeric sheathing 198
Total, for switchgear 225
Hydrochloric and hydrofluoric acid 245
Closed-loop,
Insulating compounds 196, Appendix A
Control of the rectifier 389, 391, 392, 399,
Laid in trefoil 206
539
Laid in underground ducts 199
Closed-loop,
Low smoke zero halogen 246
Transfer function 43
Metallic materials used in 183 Coefficients
Motor feeder 123 Even 415
Multi-core 372 Even harmonics 431
Phosphor bronze wire braid 198 Odd 413
Plain feeder 12, 332, 346 Odd harmonics 431
Racks 124 Triplen 413
Reduced flame propagation 244 Combustion temperature 11
Resin and resin polymers 188 Commutation 385, 388, 402
Sizing tables 222 Angle 402, 409, 414, 421, 423
Stranding of wires in conductors 193 Reactance 407
Thermoplastic 187 Notches 406
Thermosets 187 Mode1 operation 403, 405
Tinned copper wire braid 198 Mode 2 operation 404, 405
Trenches 124 Mode 3 operation 405
Cable construction Commutator 490
Armouring 192, 198 Components, two-axis 68
Compression ratio 29
Conductor 192
Compressors 108, 385, 386, 391, 402
Extruded polymer sheathing 197
Inner sheathing 192 Variable speed drives for 433, 495
Concrete buildings 356
Insulation 192
Condition monitoring of gas turbines 435
Outer sheathing 192 Conductivity of soil and ground materials 355
Semiconductor screens 192, 196, 197
Contactors, coordination of 154, 155, 159,
Cascaded devices 451
167, 343, 344
Capacitance charging current of cables 72, Contingency, typical for future load growth
340 199
Cathodic protection 467 Control and indication for switchgear 158
Anodes 467 Control gear 143
Hazardous areas 460, 467 Cooling
Impressed current 467 CACA and CACW 80
Off-shore structures 467 Fans 80
On-shore structures 467 Forced air for transformers 145
Ceiling voltage of the exciter 88, 318 Heat exchangers 80
Certification of hazardous area equipment 265 ONAF 12