Electrical Power Systems Technology

484 Electrical Power Systems Technology

numerical readouts 64

O
oil-fired 98
oil shale 134
oscilloscope 63
overload relays 418

P
panelboards 250, 251
parallel AC circuits 43, 46, 48
parallel RC circuit 46
parallel RLC circuit 43, 45, 46
part-winding starting 440
peak demand 1 16
permanent-magnet DC generator
172
permanent-magnet DC motor 358
permanent capacitor motor 377
phase angle 34, 51
(θ) 50
phase current 54
phase sequence 72
phase voltages (VP) 54
phase windings 53
pi-type filter 198
pilot lights 415
power 23, 26, 27, 28, 48, 54
control 428, 441, 453
demand 70, 71, 115
distribution 209, 214, 249, 250,
256, 257, 262, 269, 278, 279
factor 49, 52, 69, 296, 302, 397
correction 297, 299
meter 69
measurement 24
of 10 13
outlets 253
plants 84

source 253

transformers 223

triangle 50, 51, 52

prefixes 9, 10, 11

pressure switches 414

primary cells 159, 163

primary reactor starting 435

primary resistance starting 434

programmable logic controllers

(PLCs) 447

pulsating direct current 171, 182,

191

pumped-storage 106

purely capacitive circuit 39

purely inductive 34

pushbutton switches 411

R

R-L circuit 36

raceways 249, 253

RC circuit 40, 41

RC filter 198

reactance (XT) 46

reactive power 50, 297, 298

rectifiers 181

relay 246, 247, 422, 423

language 450

repulsion motor 379, 380, 381

resistance heating 308, 321

resistance welding 311

resistive AC circuits 32

resistivity 229

right triangle 50, 52, 471, 472

rigid conduit 286

ripple factor 192

RL circuit 34

rocker switches 411

rotary converter 190

rotary switches 412