Index
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Z |
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R radar interferometry, 573 see current measurement radial forces, bearings, 250 rated continuous current capacity, 1094 rating: cables, 624-25
ratings, switchgear assemblies, 395-40, 416-20, 423-24
capacitors, 944-47 conductors, 1049-65 current-carrying conductors, 1049-65 derating factors belts, 241-46
duty, 104
busbars, 1004-25 cables, 623-25 motors, 9-17, 162-63 switchgear assemblies, 423 static drives, 151-52, 169. induction motors, 63-82 short-time motors, 77 slip-ring induction motors, 104 switching devices, 944-45 re-acceleration of motors, 206-07 re-strikes of arcs, 657 reactance: bus systems, 1098
reactive banks, 908-12
measurement, 1098 reactive control: line length effect, 898
reactive power management, 887-93
load angles, 898-906 power factors, 899-900 power transfer optimization, 896-906 communication, see communication
dynamic stability, 906-08
SCADA system, 912-22 serial data transmission, 922-27 transient stability, 906-07
symmetrical lines, 902
mid-point compensation, 895
objectives, 788-89 power transfer, 890-93 series inductance, 858 transmission lines, 889-93 uncompensated transmission lines, 889-93 reactors, 971-80 I-f characteristics, 973-76 air cored, 973-74 application, 976-78 arc suppression, 979 connections, 977 coreless, 973-76 couplers, 979 current limiting, 976-79 damping, 979 design criterion, 973-76 gapped iron core type, 975-76 |
grounding transformers, 979
receiving-end voltage, 903-06 magnetic characteristics, 973 neutral grounding, 979 saturated types, 975-76, 1018-20 selection, 973 series, 976-79 shunt, 976 smoothing, 980 standards, 980 types, 973-76 reclosing relays, 907-8 recommended torque fasteners, 1043 recording earthquakes, 510-12 rectangular busbars, 1062-64 rectifiers: circuit configuration semi-conductor devices, 145-47
reduced voltage starting, 86-93 comparison transistors and thyristors, 146 converter circuits, 145 high current rectifiers, 138 electrolysis process, 138 thyristors rectifier circuits, 148-49 unit configurations, 148-49 reflections, surge arresters, 691-97 regenerative schemes, 155-56 relays: bi-metallic thermal, 327-29
relubrication of bearings, 272-75 comparison various types of relays, 442 electromagnetic, 338-39 equipment protection schemes, 438-41 fast-responding, 674 heavy duty, 328 LV motors, high impedance circulating current protection, 553-61 high impedance differential protection, 553-61 microprocessor-based, 340-41, 871-72 over-current settings, 329 over-current type, 327-28, 330 protection, 335-43, 779-80 single-device motor protection, 338-43 solid-state, 339-41 thermal over-current type, 327-28, 330 remote drive and telemetry software, 141 remedies from harmonics, over-voltages and voltage surges, 163 required response spectrum (RRS), 514, 523-24 residual current circuit breakers see ground leakage... residual voltage transformers (RVTs), 534-38 resin-rich coils, 259, 303 resistance: bus systems measurement, 1098
discharge devices, 948-50 electrical machines measurement, 293-94, 1098 human body, 810-11 |
insulation tests, 261
resistance temperature detectors (RTD), 296, 346-48 measurement, 293-94, 1098 resistive shunts, 569 see current measurement resistivity of soil, 802-03, 811 resonance: effects, 647-48, 699, 764-767
response spectrum of earthquakes, 512-13 harmonic generation, 840 surge arresters, 699 restrike voltage, 655-57, 831 retrofitting with EE belt drives, 241
rigid couplings, 223 with EE motors, 33 with EE motors and static drives, 181, 203-04 with hydraulic couplings, 231-32 with SF6 breakers, 757 with vacuum breakers, 757 ring frame motors, 187-88 rising mains bus systems, 988 rod grounding, 799-801 rolling mills, 139 Rogowski coil current transducers, 571 Rogowski principle, 572, see current measurement RoHS (restrictions on hazardous substances), xii, 31, 485 rotating arc technology, 738-40 rotating machines: protection, 665-66
rotors: surge protection, 666, 668-74 switching surges, 666, 668-74, see also electric machines; electric motors; HV& LV motors; slip-ring induction motors; squirrel cage induction motors designs, 43-46
round conductor grounding, 800-01 double squirrel cage motors, 44-46 heat, 322-23, 326 locked rotor protection, 335-36 pulley drives, 252-53 resistance wound motors, 98-110 slip-ring induction motors, 97-101 stator rubbing, 279 tests, 304-06 routine tests: bus systems, 1093-94, 1098
rules of thumb, 367-75 capacitors, 964-65 current transformers, 568 electrical machines, 291 metal enclosed bus systems, 1093-94, 1098 metal enclosed switchgear assemblies, 485, 501 voltage transformers, 566-67 RVTs, see residual voltage transformers |
