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OM-2031
TEST BOX
TEST POINTS
POINTER
CONNECTOR
POSITION
TERMINALS
1
K-M
2
K-P
3
K-S
4
K-A
5
K-B
6
H-S
7
K-Z
8
D-F
9
V-X
10
K-b
11
K-E
12
K-R
13
K-N
14
K-J
15
K-G
16
U-W
2-3
Page 18
TEST
DESCRIPTION
Phase "A" input for
reg. and trays
Phase "B" input for
reg. and trays
Phase "C" input for
reg. and trays
Protective monitor
fuse
Fuse interlock relay
Protective monitor
contacts
Plug interlock relay
Exciter input
Regulator output *
Contactor operation
Overload contacts at
less than 125O% load
Contactor switch
Battery voltage and
engine circuit fuse
Shut-down solenoid
Governor actuator
Governor actuator
Typical Test Values at Test Receptacle
Connector or Test Box
Figure 8
CONDITION
VOLTAGE
Unit in "GEN" mode 115-V AC
& auto-man sw. in
400-Hz
Unit in "GEN" mode 115-V AC
& auto-man sw. in
400-Hz
"AUTO"
Unit in "GEN" mode 115-V AC
& auto-man sw. in
400-Hz
"AUTO"
Battery voltage
12-V DC
Test bank sw. closed
12-V DC
& contactor closed
Auto-man sw. in
115-V AC
"AUTO" position
Plug in aircraft
28-V DC
Unit in "GEN" mode 8-12 V DC
Unit in "GEN" mode 50-70V
& auto-man sw. in
-DC
"AUTO"
Test bank sw. closed
115-V AC
& contactor closed
Test bank sw. closed
0-V DC
& contactor closed
Test bank sw. closed
115-V AC
& contactor sw. in
"ON" position
All conditions
12-V DC
Engine running
0-V DC
Unit in "GEN" mode 0-V DC
Unit at idle speed
0-V DC
August 5/89 Revised
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