Electrical Power Systems Technology

482 Electrical Power Systems Technology

D

d’Arsonval 61
DC generator 169, 170, 172
DC motors 353, 357, 358, 360, 361,
362, 398
DC power control 458, 459
DC stepping motor 364, 365, 366,
367
delta configuration 53, 150
delta connection 54, 55
delta system 56, 263
demand factor 85, 294, 295
derived units 7, 8
diac 468
dielectric 37
direct conversion 119
disconnect switches 242
distribution 20
systems 211, 213
drum-controller switches 414
dynamic braking 444, 445
dynamotor 362, 363

E
eddy currents 309
efficiency 90, 155, 217, 396
electrical metallic tubing (EMT)
287
electrical systems 21, 30
power 24, 25
electric arc welding 311
electric heating 314, 317, 320
electromagnetic induction 138, 140
electromagnetic spectrum 328
elements 473
enclosures 421
energy 22, 33, 39, 66
source 18, 21
English system of units 6

F

Faraday’s Law 138, 141

farad (F) 39

feeders 249, 252

feeder circuits 280, 281, 283

filter circuits 191

float switches 414

fluorescent lighting 332, 333, 334

foot switches 414

fossil fuel 87, 97

systems 86

frequency 71, 72, 153

converters 445, 446

fuel cells 119, 131, 132

full-voltage starting 434

full-wave rectifier 183, 184, 185, 189

fuse 241, 244, 245, 246

G

geothermal 118, 122, 123

ground-fault indicators 74, 75

ground-fault interrupters (GFIs)

264, 265, 266, 267, 268

grounding 262, 263, 284, 285

H

half-wave rectifier 186

harmonics 153

heaters 417

heating loads 319

heat pump 318, 322, 323, 325

heat transfer 96

henry (H) 37

high-voltage direct current

(HVDC) 210

horsepower 355, 356

HVAC systems 319

HVDC 211

hydraulic turbines 104