Page 618 - Handbook of Electrical Engineering

INDEX 611

Step voltage 589 Correction for mesh spacing 593
Touch voltage 589 Correction for rods within the grid 593
Electrolytic tank, for slip ring motors 391 Deceleration 118
Electromagnetic interference 399 Deep-bar 102
Electromagnetic damping 304 Derating for cable conductor current 202,
Electromotive force, EMF 85, 99 204, 206
Emf behind an impedance 274 Derating of ground resistivity 589
Induced in a transformer 134, 137 Doubling for fault current 151, 164
Sub-transient emf 275, 294 Fusing 156, 225
Synchronous emf 275 Load 10
Transient emf 275 Marginal for MVA rating with future load
Emergency 278
Generators 3 Multiplying to change reactances 481
Load 3 Normal running load 9
Lighting 459 Overload 10
Enclosure 78 Overall power 5
Copper bonding straps 371 Power 64
Direct and indirect entries 259 Factory built assemblies 143
For switchgear 143 Fans
Forms of separation in switcher 148 For transformer 12, 138, 145
In relation to earthing 371 In induction motors 121
Ingress protection for 78 Shaft mounted cooling 390
Open and closed types 120 Ventilating 345
Plain or clearance hole entries 372 Faults
Specification of 473 Busbars 332
Threaded entries 371 Cable internal line-to-line 333
Totally TE 120 Cable internal three-phase 333
End-of-curve condition of characteristic 122 Generator internal 323
End-of-curve operating point 14 HV motor phase-to-phase 339
Energy equation, compressor and turbine 32 Line-to-ground 364, 479, 483
Energy efficiency 385 Line-to-line 479
Equivalent circuit Transformer internal 329
Of a screening system in cables 375 Fault current 73
Of a transformer 132 Contribution from induction motors 292,
On an induction motor 100, 495, 500 300, 493, 503
Of the earth loop impedance 366 Doubling, see current doubling
Pye, for long cables 217 Earth fault 324
Tee, for long cables 214 First cycle of 292
Equivalent circuit, low voltage system 271 Instantaneous 274
Equivalent transformer 278 Let-through 339
Essential load 3 Limited by transformer impedance 145
Events and alarms 158, 448 Peak asymmetrical sub-transient 291
Extra-fast acting fuses 176 Peak let-through 176
Excitation 61 Peak symmetrical 274
Excitation voltage 88 Peak value of the 274
Exciter 62, 78, 96 rms value of asymmetrical 293
Main 88 Single line-to-ground 370
Pilot 88, 89 Sub-transient 79
Symmetrical 276
Factor Through fault 319, 329
Correction for depth of the grid 593 Total sub-transient symmetrical rms 281
Correction for grid geometry 593 Transient and sub-transient 279