Page 622 - Handbook of Electrical Engineering

INDEX 615

Levels of illumination 461 Gearbox 13, 38
Low pressure sodium 461 Generator 38
Normal 459 Heat in motors 121
Stroboscopic effect 459 Ohmic power, in harmonic systems 410
Types of fittings generally used 461 Power dissipation from harmonic filters
Limits 97 431
Load 3 Resistive 500
Angle across a reactance 303 Reactive power 70
Belt-driven 122 Silencer, filter and ducting 38
Break switches 154 Turbine 29
Current in rectifiers 404 Lower calorific value 35
Emergency 3 Lower explosive limit 252
End-of-curve condition 122
Essential 3 Machines, centrifugal 122
Future expansion 8 Magnetic flux 99
Initial consumption 8
Magnetic saturation knee-point 401
Non-essential 3
Magnetic saturation in generators 401
Normal 3
Magnetic saturation in transformers 401
Seasonal demand 5
Magnetising current 140
Static 345 In induction motors 393
Total 5
Total of the system 49 Of transformer 324
Total plant peak, TPPL 5 Magneto-motive force, MMF 63
Total plant running, TPRL 5 Master load schedule 2
Uninterruptible 452 Materials
Cable insulation 188, 192
Vital 3
Cable sheathing 188, 192
Loading
Mathematical models
Fully loaded system 311
of machines and control systems 33
Lightly loaded system 311
transient and sub-transient power equations
Single phase, unbalanced 479, 483
Load factor 438 53
Decreasing 446 Maximum asymmetrical current in fuses 176
Loads Melting time 174
Sharing of 46, 443 Merz-price, see protection 333, 334
Unbalanced 323 Differential current 340
Load schedule 5, 445 Micro-computer based intelligence, for
Load shedding switchgear 159
High speed 436 Micro-computer chips 347
Low speed 436, 440 Micro-computer control system 397
Priority table 439 Modules
Locked rotor apparent power 107 Electronic relay, in switchgear 159
Locked rotor current 109 Solid state, for use in switchgear 164
Locked rotor torque 109 Molded case circuit breakers 144, 162, 163,
Long delay setting 348 164, 165
Long delay time 348 Moment of inertia 11
Loss of accuracy 486 Motor control center 143, 144, 155, 157, 158,
Losses 209
Active power 70 Motor feeder cable 123
Core-loss in a transformer 134 Motor run-up time 318
Dirty engine 38 Motors
Eddy current 100 AC commutator 388
Fans and bearings 500 Commutator 385