p. Thermal Wall Converter, 400 Hz.
DOD drawing No. . . . . . 69-589-2.
volts . . . . . . . . . . . 100/130.
Current . . . . . . . . . . 1 ampere.
Elements . . . . . . . . .3.
Phase . . . . . . . . . .3.
Wire . . . . . . . . . ..4.
Output . . . . . . . . . .20 MV dc. open circuit.
Output circuit resistance . .4.97 ohms.
Watts per element . . . . .96.3.
q. Alternator.
(1) Stator coils winding data 50/60 Hz.
Type . . . . . . . . . . . 3 phase.
No. of slots and COils . . . 84/84.
Turns per coil. . . . . . .4.
Coils per group . . . . . .7.
Conductor. . . . . . . . .6 of AWG 15.
Span . . . . . . . . . . . . . . .1-15 span.
(2) Rotor coils winding data 50/60 Hz.
Resistance . . . . . . . .
Conductor . . . . . . . .
Turns per coil. . . . . . .
No. of poles and coils . . .
0.390 ohm at 25°C.
9 of AWG #16 (0.0508).
103.
4.
(3) Stator coils winding data 400 Hz.
Type . . . . . . . . . ..3 phase.
No. of slots and coils . . . 108/108.
No. of coils per group . . .36 groups of 2,
36 groups of 1,
Turns per coil . . . . . . . . .5.
Span . . . . . . . . . . . l-4.
Conductor. . . . . . . . . AWG 16 and AWG 17.
(4) Exciter stator winding data.
Type of winding . . . . . .
No. of slots and coils . . .
No. of coils per group . . .
Turns per coil. . . . . . .
Span . . . . . . . . . . .
Conductor . . . . . . . .
salient pole dc.
10 slots, 10 coils.
1.
196.
1-2.
1 of AWG #21 (0.0285).
1 of AWG #22 (0.0253).
(5) Rotor coils winding data 400 Hz.
No. of poles and coils . . .24.
Turns per coil. . . . . . .30.
Conductor. . . . . . . . .4 of AWG 15.
(6) Exciter rotor winding data.
Type of winding . . . . . .3 phase.
No. of slots and coils . . .36 slots, 36 coils.
No. of coils per group . . .6 groups of 2, 24
groups of 1.
Turns per coil. . . . . . .3 for 60/50 Hz, 5 for
400 Hz.
Span . . . . . . . . . . . l-4.
Conductor. . . . . . . . . 5 of AWG #16 (0.0508)
60/50 Hz. 3 of AWG
#16 (0.0508) 400 Hz.
Insertion sequence . . . . . 211/112/111/121/111
and repeat.
r. Engine Repair and Replacement Standards.
Table 1-2 lists manufacturers sizes, tolerances,
and maximum allowable wear and clearances.
s. Schematic Wiring Diagrams. Figures 1-1
through 1-15 show the schematic wiring diagrams
for the 50/60 Hz and 400 Hz engine generator sets,
as well as schematic and wiring diagrams for elec -
trical assemblies, relay boxes and kits.
t. Torque Values.
(1) Table 1-3 lists specific torque values.
(2) All torque values are calculated for oil
lubricated threads. Increase this value by 10
percent when threads are not lubricated.
u. Unit Function Differences. The engine gener -
ator sets are provided in three configurations accord-
ing to class and mode of operation. The class desig-
nation of a unit is determined by its frequency and
voltage performance and the mode designation is
dependent upon the output frequency. Table 1-4
provides a quick reference for determining engine
generator set classification and special component
complement required.
v. Performance Characteristics. The electrical
performance characteristics for Class 1 and Class 2
sets are provided in tables 1-5 and 1-6.
1-5