TM
9-4910-663-12
(5) Set DC VOLTMETER OUTPUT VOLTAGE SELECT switch (S11, fig 2-1)
to BAT, set MASTER LOAD DISCONNECT switch (S8, fig 2-2) to ON, and
make sure that system voltage to be tested is same as battery voltage.
Set MASTER LOAD DISCONNECT switch (S8) to OFF position, then, set
BATTERY CIRCUIT SELECTOR switch (S6) to OFF and set DC VOLTMETER
OUTPUT VOLTAGE SELECT switch (S11, fig 2-1) to RECT GEN position.
(6) Connect regulator armature to REGULATOR G+ binding post (fig
2-3), regulator field to REGULATOR F-B binding post, and regulator
battery to REGULATOR B+ binding post. Where a BAT- and GEN- are
required, connect these respectively to REGULATOR B-binding post and
REGULATOR G- binding post.
(7) Using test leads, connect generator output to GENERATOR G+,
GENERATOR G-, and GENERATOR F binding posts (fig 2-3).
(8) Using test lead, connect ground lead from regulator case to
(9) Set POLARITY REVERSING switch (S7, fig 2-2) to NEG GND and
GEN FIELD switch (S37, fig 2-2) to EXT GND or INT GND, as required for
the generator undergoing test.
(10) Remove link between REGULATOR B+ binding post (fig 2-3) and
REGULATOR G+ binding post. Refer to fig 2-12 for link position.
(11) Verify that FINE CONTROL 0-5 AMPS (MAX) switch (S29, fig
(12) Set FIELD CIRCUIT switch (S32, fig 2-2) to REGULATOR posi-
tion.
(13) Open high voltage compartment access door and set reversing
switch (S1, fig 2-5) to position that produces proper direction of
to ON, and close high voltage compartment.
(14) Start varidrive by pressing START pushbutton switch (S3,
fig 2-4) and hold for no more than 30 seconds.
CAUTION
Observe DC VOLTMETER OUTPUT VOLTAGE meter (M2, fig
generator comes up to speed. Do not exceed voltage
or speed limits of generator being tested.
(15) Using SPEED CONTROL (fig 2-4), vary drive speed throughout
speed range of generator, observing regulated voltage (M2, fig 2-1)
(16) Set DC VOLTMETER OUTPUT VOLTAGE RANGE switch (S12, fig 2-1)
to proper voltage for system under test.
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