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P painting: cleaning preparations, 463-64
panels:
controlgear assemblies, 463-81 curing, 472 degreasing, 463-64 effluent treatment, 463, 473-81 electrostatic, 471-74 final coats, 469-71 fume control, 476-81 paint shop layouts, 470 priming, 468 procedures, 469 standards, 481 switchgear assemblies, 463-81 testing, 474-75 annunciation schemes, 588-90
parallel switching of capacitors, 831-32, 853-55, see also capacitors,
control, 389-92, 587-91, 860-61 design parameters, 860-61, see also switchgear assemblies paper insulated cables, 622, 633-35 parallel operation DG sets, see diesel generators driving torques, 595 drooping curves, 596 excitation changes, 597 hunting procedure, 601-03 infinite bus synchronization, 598 power generation, 594-607 procedures, 601-07 synchronization, 601-07 theory, 594-99 partial discharge tests, 967 passivation, 467, 481 PCB-filled capacitors, 964 PCCs see power control centres peelable coatings, 475 per unit voltage, definition, 655 performance: d.c. drives, 178-80
a.c. drives, 178-80 induction motors, 3-40 service conditions, 9-17 time of start-up, 47-50 tolerances, 308 periodic duties, 65-70 periodic speed change, 68-69 Petersen coil reactors, 767-68, 979 PF (or p.f.) see power factors PID Control, 392 phase bus systems, segregated, 986-87 phase enclosure shorting, 1070 phase interleaving, 1022-24 phase isolated bus system, 987, 1069-89 phase spacing, 1022 phase transposition, 1024-25 phasor control, 117-25 diagrams, 533-34
philosophy of quality systems, 283, 285-88 direct torque control, 123-25 drives comparison, 123 field-oriented control, 120-23 flux braking, 125 flux-oriented, 122 motors, 113-26 rectifier units, 157 single vector control, 118-20 torque control, 123-25 phosphating, 463-67, 481 physical properties, conductors, 1051-52 physio-chemical analysis, 476 pickling, 464, 466 pipes: friction losses, 370-75
pitch lengths, V-belts, 248 grounding, 799-800 plant: effluent treatment, 479-80
plastics, 422 flow diagrams, 479 layouts, 480 |
plate grounding, 799 PLCs, 173, 391-92, 913-15 PLC based control panels, 389-91 polarization index, 261-62 polyphase induction motors, 5-8 positive phase sequence impedance, 397-400, 765-66 powder painting, 471-74 power cables, see cables power capacitors see capacitors power circuits: short-circuit tests, 495
power control centres (PCCs), 385, 387
switchgear assemblies, 445-55 power Darlingtons, 127 power diodes, 126 power distribution, 418-19 circuit diagrams, 409-10
power factors (p.f.):
fault levels, 417 galvanizing processes (static drives), 177 panel short-circuit tests, 412 panels, 496 short-circuit tests, 412 automatic correction, 864-67
power frequencies: benefits of improving, 828 capacitor rating improvement, 861-63 correction, 864-73 correction relay, 870-73 diesel generators, 585 effects of motor loading, 17-18 electric motors, 17-18, 299, 861-62 improvement system, 827-28, 883, 906-08 industries, 867 load effects, 17 measurement, 298-99 power capacitors, 825-79 reactive control, 896-900 relays, 870-73 bus systems, 1094-95
power generation and distribution, 403, 409-10, 700-01, 827, 896 metal enclosed bus systems, 1094-96 switchgear assemblies, 381-89 tests, 304, 487-90, 1094 voltages, 302, 489-90, 1094-96 circuit diagrams, 409-10
power ratings belts, 235, 243 grounding practices, 797-822 station fault levels, 403 surge arresters, 700-01, see also generator fault level power networks assessing fault levels, 416-20 auto-reclosure scheme, 907-08 dynamic stability, 906-07, see also SCADA transient stability, 906-07 power reactors see reactors power saving, 168 power stations protections, 591-94 power system fault currents, 396 power system automation, see automation power transfer, 890, 892, 895-96 power transistors, 127-30 pre-treatment non-ferrous components, 467 pressure relief facilities, 709-10 pressurization systems, 1077 pressurized enclosures, 202 priming paint, 468 process monitoring, 389 process plant operation, 173-76 programmable logic controllers (PLCs), 389-92 protection: 438, 608, 961 analysis, 716-17 bus systems, 1069-70, 1097 capacitors bank, 961 units, 953-69 circulating current scheme, 553 contact bouncing, 666-67 current transformers, 544, 551-57, 563, 783 |
diesel generators, 587-94
protective circuit verification, 500 domestic single-phase systems, 775-78 dust protection test, 306 electric motors, 317-57 equipment, 438, 608, 961 gapless surge arrester characteristics, 714 generating stations, 440 grounding faults, 773-95 harmonic effects, 157, 319, 842 induction motors, 317-57 industrial single-phase systems, 775-78 isolated phase bus systems, 1069-70 lightning strikes, 648 locked rotors, 51, 335 margins surge protection, 688 metal enclosed bus systems, 1097 motors, 317-57 parameters ground fault, 770-71 power stations, 591 relays, 441-43, 779-80 schemes, 438, 608, 961 selection of schemes, 770-71, 773-93 ground fault, 786-90
selection of surge arresters, 703-06 phase fault, 438-41 series capacitors, 960, 962-63 shunt capacitors, 955-60 single current transformers, 786 single-phase systems, 335-37, 775-78 spill currents, 555 stalling, 335 surge arresters, 688-99 analysis, 716
surge transferences, 666-67 levels, 688-99, 703-05 margins, 688 selection, 703-06 switchgear, 353-57 switching surges, 666-67 transferred surges, 694-97 transformers, 783 unfavourable conditions, 327-32 verification degree of protection, 306-08 voltage surges, 337-38 voltage transformers, 532 voltage unbalance, 335 water ingress, 306-08 proximity effects: bus systems, 1021-25
PS type current transformers, 553-63 busbar reactance, 1014-16 conductors, 1008, 1013-25 derating, 1021-22 isolated phase bus systems, 1080 minimizing, 1022-24 multicore cables, 625 voltage unbalance, 1016-21 PTC thermistors, 347-48, 351 puffer technique, 735-36 pull-out torque tests, 300 pull-up torque tests, 300 pulleys: drive rotor suitability, 252-54
pulse encoders, 125 installation, 269-70 motor loads, 251 tolerances, 269-70 pump motors, 190-95 pump power requirements, 369 punched grid resistors, 100 PVC insulated cables, 424 PWM causing shaft currents,165 |