(6) Using the variable resistor, adjust until the
registers desired voltage. The load meter should read "0."
(7) Inspect the frequency meter. It should indicate 400-Hz or
60 Hz, depending on which machine is being operated.
NOTE:
If the frequency reading is incorrect.
The
engine governor must be adjusted.
Refer to
Appendix A for governor adjustment.
(8) Place the circuit breaker in the ON position to apply the
load.
(9) Use
the CURRENT SELECTOR switch and the load meter
indications to
determine the current draw on each terminal (excluding
terminal "LO")
and phase.
The load reading should not exceed 100
percent at any
position of the CURRENT SELECTOR switch.
CAUTION
IF MORE THAN 100 PERCENT OF FULL LOAD CURRENT IS
INDICATED ON THE LOAD METER, REDUCE THE LOAD OR
STOP
THE
GENERATOR
SET
AND
REPORT
TO
ORGANIZATIONAL MAINTENANCE.
(10) Readjust the variable resistor, if necessary, to compensate
for the current draw.
NOTE:
The FIELD FLASH switch is to be used as a
manual method flashing the generator fields
only when the voltage fails to build up
automatically.
Later models have no FIELD
FLASH switch.
(11) When the operation is complete, place the circuit breaker
in the OFF position and stop the generator set.
i. Load transfer.
(1) Each power unit discussed in this lesson is equipped with a
POWER TRANSFER switch. This switch is used to transfer the generator
load from Generator Set Number 1 to Generator Set Number 2 or vice
versa.
(See Figure 14.) In some cases, the generator sets may be
referred to as the operating generator set and the standby generator
set.
In either situation, before the load can be transferred from
one to the other, both generator sets must be operating properly.
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