

Suspension-type insulators, 402 

 Switches, air-break, 408 



oil, 409 



Symbolic notation. 77 

 Synchronizing, alternators, 168 . 



synchroscope, 71 

 current, If,.; 



Synchronous, alternator (see Alter- 

 nator), 99 



condenser for power-factor regu- 

 lation, :;. 



Converter, 342 



amortisseur winding, 374 

 armature reaction of, 356 

 commutating poles, 358 

 commutation of, 357 

 conductor currents of, 351 

 connections of transformers 



for. 



current ratios, 348, 349, 350 

 direct. ., 



double-cur rent generator, 343 

 experimental determination 



of operation, 364 

 harmonics in, 365 

 hunting of, 374 

 inverted. :;n. 367 

 parallel 'i|.,-r:ition of, 373 

 polarity of. 370 

 polyphase, HI \ 

 principle of, 342 



effect of number of phases 



:*55 

 of power-factor on, 355 



sectioiialixing switch for, 368 

 slip-ring taps 



slip-rings, number required 



sparking of, 369 



split 



starting, by auxiliary 



m iilternatu 



from direct-ciin- 



Synchronous, converter, sub-ta- 



. 407 



three-wire, 375 

 voltage control, 358 



field control. 359 

 induction regulator, 359 

 series booster, 359 

 series reactance, 359 

 split-pole, 



transformer taps, 360 

 voltage ratios 



generator (s. 99 



impedance. 1 17 



method determining alter- 

 nator regulation, 1 U 

 incl. 



motor, 305 



amortisseur winding, 318 

 armature reaction. :U 1 

 lagging current. -1- 

 leading current, 311 

 compounding curves for, 318 

 damper windings for, 318 

 effect of loading on, 306 

 field 



hunting of, 318 

 industrial applications, 329 

 frequency changer- 

 propulsion. 330 



ill rises, 



power-factor. 



M on, 



principle of operation, 305 

 salient poles. 



ton: 



voltage induced m held 



during, 

 uses. :iL 



ictoroonv* 



V-cw 



or diagrams, lagging 



leading -11 



