(c) S t a r t the varidrive assembly, c(6)
( f ) C h e c k the generator brushes for
a b o v e , and turn the speed control
sparking, and the generator for un-
handle (22) slowly clockwise until
usual noises and excessive heat.
3,000 rpm are indicated on the tach-
(g) Turn the 40 ohm field current rheo-
ometer indicator meter (3).
stat (16) in the fully counterclock-
w i s e direction and the speed con-
(d) Turn the 40-ohm field current rheo-
t r o l handle (22) partially counter-
stat (16) clockwise until 3000 am-
c l o c k w i s e until the varidrive as-
peres are indicated on the load dc
sembly speed is reduced to speed.
a m m e t e r (1).
Stop the varidrive assembly by de-
pressing the stop button (21-C) on
( 4 ) should be between 1.1 to 1.4
t h e drive control (21).
v o l t s . A lower than above voltage
Place switches and controls
reading indicates a shorted inter-
pole and compensating windings;
cated in column 3b of the table. Re-
h i g h e r than above voltage reading
move all cables, leads, and the gen-
e r a t o r from the test stand.
(i) P o l a r i z e the generator (par. 99d).
Note. The key numbers
in this section refer
to figure 32 except
Section X. TESTING RETT PRODUCTS COMPANY, THE ELECTRO-
MECHANICAL PRODUCTS COMPANY, AND TENN-TRONICS, INC.
400-AMPERE GENERATOR CONTROL BOXES
1 2 8 .
400-Ampere Generator Control Box
The Rett Products Company 400-ampere
Control Units Tests (Rett Products Com-
g e n e r a t o r control box (fig. 44), the Electro-
pany, Electro - Mechanical Products
mechanical Products Company 400-ampere
Company, and Tenn-Tronics Inc.)
g e n e r a t o r control box (not illustrated), and
Refer to TM 9-2320-222-35/1.
t h e Tenn-Tronics Inc 400-ampere generator
a. Purpose. This test is performed to indi-
cate the functioning of the control units of the
n a n c e number 8723894 have a construction
400-ampere generator control box (fig. 44) and
s i m i l a r to that of the 150-ampere generator
w h e t h e r setting adjustments are required to
t h e units so they perform in accordance with
t h a t they are designed for a 400-ampere cir-
m a n u f a c t u r e r ' s specifications.
c u i t . The individual control units used in the
c o n s t r u c t i o n of the Rett Products Company
b. Tabulated Data.
generator control box are a line switch, polar-
(1) M a n u f a c t u r e r ( p a r . 1 2 7 ) .
ized voltage relay, differential and reverse cur-
(2) I d e n t i f y i n g n u m b e r .
r e n t relay, voltage regulator, and voltage ad-
rheostat. The Electrical-Mechanical
Products Company and Tenn-Tronics Inc gen-
(3) Voltage regulator.
Voltage coil (red-
erator control boxes are similar in construction
g r e e n leads)
5.40 ohms, plus or minus
control box and the purpose and functional re-
Equalizer coil (brown-
sults of these three control boxes are the same
black leads) . . . . . 0.4 ohms, plus or minus
as that which is described for the 150-ampere