Page 628 - Handbook of Electrical Engineering

INDEX 621

Star point Submarine cable 73, 185, 402
At the sending end 333 Submersible pumps 394
Connection to earth 323 Sub-system, unearthed 353
Earthing of 224 Sulphur,
Earthing through an impedance 328, 333, Hexafluoride gas 147
358 In cables 187
Low voltage system 355
Switchgear 143
See also neutral point 80
Metal clad type 144
Starting
Neutral busbars 146
Auto-transformer method 126
Switching devices 154
Korndorfer method 126, 573
Part winding method 129 Switchboard 3
Reduced voltage 126, 573 Switchboard, main 277
Series reactor method 128 Symmetrical component theory 483, 585
Soft-start method 127 Synchronising facilities 3
Star-delta method 126 Synchronous
Starting and run-up current 107 Generators 72, 83, 273, 479, 480
Starting current 106 Machines 62
Starting gas turbines, Motors 61, 294
DC motors, air motors, batteries 39 Reactance 62, 85
Starting or run-up time, induction motor 125, Reference frame 487, 496
225, 329 Source and sink 302
Starting times, long 336 Speed 55, 63, 100, 487, 496
States System
Dynamic 64
Control and data acquisition, SCADA 159,
No-load 108
336, 435, 448
Steady 64
Earthing 356
Sub-transient 70
Frequency 48, 540
Transient 70
Governor control 322
State, dirty engine 439, 445
Static resistance bank, for slip ring motors Grids and rods for an earthing 352
391 Interconnected 305
Stator 99 Interconnected, tightness and looseness 306
Armature 61 Meshed or looped 277
Slots 67 Modes of operation 472
Stator current Multi-machine 306
Peak-to-peak value 63 Power management 435
Root-mean-square value 63 Radial 276, 292, 311
Stator current versus speed 100 Ring-main 277
Steel Selv and Pelv, in relation to earthing 364
Carbon 185 Solidly earthed low voltage 365
Galvanised 185 Three-phase star connected 356
Mild 185
Stiction 108 Transmission 72
Unearthed 329
Still air conditions 252
drilling rigs and low voltage supplies
Structures
323
Made of concrete and brick 353
Made of steel 353 System control and data acquisition,
Studies interfacing with switchgear 159
Preliminary 73 Systems and schemes
Transient stability 73 Interlocking 16
Studies, stability 300, 335 Synchronising 16