(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
reading indicates a shorted inter-
6, paragraph 118, in positions indi-
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-
indicates high resistance in the
e r a t o r from the test stand.
windings.
(i) P o l a r i z e the generator (par. 99d).
Note. The key numbers shown below in parentheses in this section refer to figure 32 except where otherwise
indicated.
Section X. TESTING RETT PRODUCTS COMPANY, THE ELECTRO-
MECHANICAL PRODUCTS COMPANY, AND TENN-TRONICS, INC.
400-AMPERE GENERATOR CONTROL BOXES
127. Description
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-
control box (fig. 45), all identified under ord-
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
control box described in paragraph 119, except
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-
8723894
Ordnance
rheostat. The Electrical-Mechanical
justing
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)
w i t h the Rett Products Company generator
5.40 ohms, plus or minus
control box and the purpose and functional re-
10%
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
10%
generator control box paragraph 119.
