Page 627 - Handbook of Electrical Engineering

620 INDEX

Shaft torque and shaft power 486 Ingress protection 473
Sharing of active power 444, 448 Inspection and testing 474
Sharing of reactive power 444, 447 Modes of operation of the power system
Short circuit current 223, 269 472
Current doubling 283 Performance tests 474
DC part 150, 502 Production tests 474
Double frequency AC part 150 Routine tests 474
Fundamental AC part 150 Short circuit withstand performance
Impedance 99 473
Instantaneous 492 Special tests 474
Peak 145, 274, 293 Temperature rise limits 473
Peak let-through 176, 225 Type tests 474
RMS 274, 293 Typical format 470
Short circuit, Specific heat
Line-to-line-to-line or three-phase 282, 492 At constant pressure 26, 27, 31
Not involving earth 333
At constant volume 26
Short delay setting 348
Speed governing 39
Short delay time 348
Closed-loop 41
Shutdown, of gas turbine generators 20
Derivative damping 56
Signals Droop control 43, 44
Raise and lower 84 Gain 52
Least selector device 59 Integral control 44
Silencing, inlet and exhaust 32 Isochronous control 43, 44
Silicon controlled rectifiers 385 Load sharing 46
Single line diagram 14
Open-loop 39
Single-phase protection 155
Power or load sharing between gas turbines
Single-phase transformer 131
44
Slewing characteristics in control systems 56
Proportional control 44
Slip 104
Transfer function gain 43
At harmonic frequencies 423
Full-load 101 Speed or frequency versus load sharing
Rings 88, 490 between gas turbines 46
Slip energy recovery 388 Speed regulation in a variable speed drive
Slots, in induction motor stator 129 system 400
Soft starting of submersible pumps 396 Stability
And hunting 295
Soil resistivity 367, 368
Solidly earthed secondary winding 328 Limit of transient 306
Solidly earthed start points 358 Of relays 319
Source of ignition 251 Steady state 300
Spare Studies 300
Feeder 8 Stalling time, maximum for an induction motor
Generator 8 125, 341
N-1 philosophy 9 Steel wire braid armour 186
Sparks, electrical and mechanical 251, 252 Steel wire armour 186
Spark, in a neutral circuit 365 Standard voltages 191
Specifications Standby redundant uninterruptible power
Abbreviated tests 474 supplies 457
Desirable requirements 470 Standing load at a switchboard 312
Essential requirements 470 Star, connected winding 100
Hazardous areas 472 Star connected motors 192
High ambient temperatures 471, 472 Star-delta stator winding 388
Incidental requirements 470 Star-delta transformer 328