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 |
| I
IEEE-112, 35 IEEMA standard-19 - see energy conservation IEGTs - see injection enhancement gate transistors I-f characteristics of reactors, 973-76 IGBTs see insulated gate bipolar transistors IGCTs - see integrated gate commutated thyristors impedance grounding, 766-67 impregnation, MV motors, 259-60 impulse definition, 649-50 impulse levels, 393-94 impulse voltage withstand: metal enclosed bus systems, 1094-96
inching motors, 58-59
specification framing of tests, 302-06, 489 bus systems, 1093-96 capacitors, 966-67 formed coils, 293, 302-05 motors, 293, 302-05 switchgear assemblies, 486-90 INDAL aluminium, 1001, 1062-63 indoor current transformers, 545-47 induction generators, 212-17 wind-power, 214-17
induction motors, 3-40
altitude, 16-17
ambient temperature, 15-16 capacitor rating, 861-64 circle diagrams, 18-20 constructional features, 21-23 continuous duty, 65, 67-68 control of wound motors, 95-110 cooling curves, 70-72 cooling systems, 24 discrete constant loads, 69-70 duties, 63-82 cycles, 65
enclosures, 21 with start and brake, 66-67 equivalent outputs, 77-78 factor of inertia, 70 flywheels, 79-82 formulae, 39, 81-82 frame sizes, 8-9 frequency variations, 10, 14-15 heating curves, 70-72 inertia factor, 70 large, 24 loading effects, 17-18 mountings, 20 no-load performance, 17 non-periodic duty, 69 output, 8 performance, 9-10 periodic duties, 65-69 polyphase, 5-8 power factors, 14 protection (enclosure), 21-23 ratings, 8-9 shock loading, 79-80 short-time duties computation, 77-79 single-phase, 24-32 speed changes (periodic duty), 68-69 standards, 38-39, 81, 183 starting, slip-ring, 83-94
temperature (ambient), 15-16 squirrel cage, 96-110 stator current, 7 theory and performance, 3-40 thermal curve drawing, 73-76 thermal time constants, 70 torque, 8, 12 |
totally enclosed, 21
induction motors transient recovery voltage, 650 types, 20 voltage variations, 10-11 water temperatures, 16 weatherproof, 21-2, see also electric motors; electrical machines; MV& LV motors; motors; slip-ring induction motors; squirrel cage
inductive circuits (harmonics), 840 inductive current interruption, 659-60 induction furnaces,139 inductive interference, see EMI inductors, 160, 858-60 industrial installation (grounding), 799-806 industrial single-phase system ground protection, 775-78 inertia factors, 70 infinite bus synchronization, 598 inrush current limit, 855-60 inductor design, 858-60
installation:
instrument transformers, 529-75 bearings, 269-70 capacitor units, 963-64 controlgear assemblies, 441-42 critical, 204-07 electric motors, 267, 269-77 grounding practices, 799-806 industrial, 799-806 pulleys, 269-70 switchgear assemblies, 4, 41-42, 444-45 voltage transformers, 543-44 testing, 566-69
see also voltage transformers voltage transformers, 531-44 instrument wiring, 450, 455 instrumentation, bus systems, 1069-70 insulated gate bipolar transistors (IGBTs), 127-28 insulation: basic insulation level (BIL), 687-88 bus systems, 1032-33, 1071-72 cables, 619-28 comparison, 620-21 capacitors, 966 classes, 257 conical insulators, 422 coordination, 674, 770-71 core-balanced current transformers, 783 current transformers, 544-45 enclosures, 1072-74 failures, 278-79 formulae, 265 large machines, 261-63 LV motors, 258 MV motors, 259-60, 278-79 maintenance, 260-63 metal enclosed bus systems, 1095-96 metal enclosed switchgear assemblies, 487-88 monitoring, 263-64 mounting precautions, 1041 non-continuous enclosures, 1075 polarization index, 261 practices, 258-59 quality monitoring, 263-64 resistance tests, 261 standards, 265, 772 surge arresters, 687-88 switchgear assemblies, 393, 487 system grounding, 770-71 systems, 258-59 tests, 261 thermal power stations, 278-79 |
voltage surges, 668-69, 675-76, see also winding
insulation intelligent switchboards, 386 intelligent electronic devices (IEDs), 387 intelligent starters, 357 intelligent switchboards, 386 interferometric technology, 570 interferometry, 570, see also current measurement interlocking schemes, 433-36 interferometer, 512 interferences (EMI), 572, see also EMI intermittent periodic duties, 65-66 internally protected capacitor units, 939-40 interposing current transformers, 550 interrupters, switching, 732-35 interrupting devices see circuit interrupters intrinsically safe circuit, 202-03 inverter units: bi-phase chopper schemes, 155
voltage surges, 161-62 direct torque control, 123-25 IGBTs, 129 motor control, 151-53 thyristors, 151-153 IPB see isolated phase bus systems ISO specifications, 285-88 ISO accreditation, 287 ISO 8402 Standard, 285 ISO 9000 Standard, 285 ISO 9001 Standard, 285, 288-89 ISO 9002 Standard, 286 ISO 9003 Standard, 286 ISO 9004 Standard, 286 isolated current probes, 571, see also current measurement isolated ground, see grounding isolated measurement of current, 570, see also current measurement isolated neutral grounding, 7, see grounding isolated phase bus (IPB) systems, applications, 1069
isolators, HV systems, 358-59 auxiliary feed lines,1069 conductors, 1084-85 constructional features, 1070-75 continuous rating, 1082 current ratings, 1071 definition, 1069-70 duct layout, 1070 enclosures, 1070-82, 1084-85, 1097 fault levels, 1082-3, features, 1075-78 forced cooling, 1082 forming sections, 1083-84 grounding, 1075 instrumentation, 1069-70 insulators, 1071 main run, 1069 metal enclosed systems, 987 non-continuous enclosures, 1072 phase reactors, 1076 pressurization systems, 1077 proximity effects, 1080 sample calculations, 1085-89 section determination, 1084-85 shorting phase enclosures, 1070 solar radiation, 1080-81 space fields, 1082, see also bus systems |
