Custom Search
|
|
|
||
 TM 5-685/NAVFAC MO-912
DAMPER
SLIP
Figure 4-3. Brush-type AC generator field and rotor:
Figure 4-4. AC generator field and rotor with brushless-type excitation system.
tively The two-wire alternator has two power termi-
and 240 volts between the two ends. The load is
nals, one for each end of the armature coil (see fig
connected between the two outside wires or between
4-5).
either outside wire and neutral, depending upon the
(2) The thre e-wire, single-phase alternator has
voltage required by the load. Assuming alternator
three power terminals; one from each end of the
voltage to be 120/240 volts, load 1,0 and load 2,0
armature coil and one from the midpoint (neutral,
would consist of 120-volt lamps and 120-volt single-
see fig 4-6). Terminal voltage is usually 120 volts
phase power equipment. Load 1,2 would consist of
from the midpoint to either end of the armature coil
240-volt power equipment. Two voltmeters and two
|
 
|
|
|
||
