Index



G
galvanizing processes
(application static drives), 173-76
gapless surge arresters, 684
characteristics, 684-87
distribution class, 709
protective characteristics, 688-99
selection, 699-707
station class, 684, 711-14
TOV capability, 699-703
gapped iron core reactors, 975-76
gapped surge arresters, 683-84
gas:
circuit breakers, 733-40, 748-57
classification, 199
insulated switchgears (GIS) 748-57
gate bipolar transistors (IGBTs), 127-28, 153
gate turn-off switches (GTOs), 131-132, 153
generating stations:
auxiliary services, 410-11
parallel operation theory, 594-601
protection schemes, 592-93
generators:
as condensers, 581-82
as synchronous motors, 581
circuits, 404-08
fault currents, 406, 613
fault levels, 402-08
grounding, 612-15
induction, 212, 214-17
selection of circuits, 407-08
stability levels, 892
synchronous, 212
synchronous motors, 581-82
wind-power, 214-17,
diesel generators
GFF, see ground fault factors
GIS- see switchgears
gland plates, 425
grades, aluminium alloys, 1061
greasing bearings, 276
grid ground conductor sizes, 813-15











grid resistors, 100
electronic circuits, 393
ground conductors, 815-22
ground fault factors (GFF), 768-69
ground fault neutralizers, 767-68
ground fault protection schemes, 773-95
current determination, 812-13
current sharing, 817
directional, 789-90
formulae, 794
hazardous areas, 780-81
LV systems, 778-80
parameters, 786-90
relay current settings, 790-91
restricted, 787-88
selection parameters, 786-90
single current transformers, 786
standards, 794
three-phase four-wire systems, 788
unrestricted, 788-89
ground faults, voltage transformers, 537-38
ground isolated, 164
ground leakage:
CBCT currents, 783
circuit breakers, 778
HV systems, 781
ground loop humming, 164
ground potential rise, 807-08
ground resistance, 803, 811-12
ground safe path, 164
grounded systems, 765-67
grounding:
application of different systems, 791-93
arrangements in a draw-out panel, 427-28
artificial, 770-71
clean ground, 164
conductors, 803-34, 805-06
different methods, application, 791-93
EHV systems, 806-20
electrodes, 799-806



generators, 612-14
HV systems, 781-86, 799-802
insulation coordination, 769-70
isolated ground (IG), 164
isolated phase bus systems, 1075
LV system, 775-81, 799-802
necessity, 765
neutral, 769-71
practices, 643-822
shielding of signals in electronic circuits, 164-65, 393
systems, 759-72
theory and grounding practices, 773-95
transformers, 979
grounding grids:
corrosion factors, 813
design, 813-20
step/touch voltages, 814-16
grounding practices, 797-822
clean ground or isolated ground, 164
conductor metals, 803-06
formulae, 821-22
grid design, 813-20
ground fault currents, 812-13
ground resistance, 811-12
industrial installation, 799-802
location potential differences, 806
method selection, 801-02
power generating stations, 806-22
shielding of signals, 164, 393
standards, 821
voltage gradients, 806-10
grounding stations:
design parameters, 808-10
maintenance, 806
step/touch voltages, 814-16
grounding systems, 791-93
GIS- see switchgears
GTOs see gate turn-off switches

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