Transcription of The Art and Science of Protective relaying
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The Art and Science of Protective relaying
INDEX. Abnormal conditions other than short circuits,, with directionalcomparison pilot 8 relaying , 392. A-c tripping, 335 with phase-comparison pilot relaying , Angle-impedance relay, 79 383. for tripping on 1088 of synchronism, Broken-delta connection, burden calculation, 362 140. Angle of maximum torque, adjustment,, for detecting grounds in ungrounded 57 systems,, 320. of power relays, 52, 55 for polarizing directionalground relays, of shortcircuit relays, 55 151. Arcs, effect on distance relays, 345 resistance, of capacitance potential devices, 302 135, 140. Arc - furnace - transformer protection, Buchholz relay, 281. 270 Burden, current-transformer, 114 potential ASA accuracy classification,, of current transformer, 133.
Operator vs. protective relays, 11 Opposed-voltage pilot relaying, 92, 95 Out of step, see Loss of synchronism Overcurrent relays, combination of instantaneous and time delay, 49 pickup or reset, 45 time delay, 45, 46 see also Line protection with overcurrent relays Overreach, of distance relays, 82, 350, 351 of instantaneous overcurrent relays ...
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