thoroughly ventilate the suppressor
in S (V) voltage. The boosting of S (V)
area to prevent inhalation of
voltage under conditions of a zero power
factor load is desired since a considerable
poisonous fumes. Do not handle the
increase in generator field current is then
damaged rectifier. Selenium oxide
The control winding S (C)
may be absorbed through the skin,
serves the same function under load
especially when the rectifier is hot.
conditions as explained for no-load
Failure to observe this warning can
result in serious damage or death.
c. Bench Testing.
excited and retains only a small amount
(1) Connect a simulated load to the exciter
of field residual magnetism for voltage
without the voltage regulator in place.
build-up, an external 24volt direct current
(2) Check load voltage and current regulation
supply source is required to flash the
between unity and zero power factor
flash voltage is controlled by the
(3) With the voltage regulator connected to
The field flash
the exciter, check the load voltage and
voltage is applied when the engine
current regulation between unity and zero
reaches 600 revolutions per minute.
power factor lagging.
b. Removal. Part of the housing must be removed
in order to remove the exciter (fig. 3). Refer to figures
disassemble the exciter.
117 and 118 to remove the exciter.
e. Cleaning. Clean all parts with a clean dry cloth
and compressed air.
When malfunction of the selenium
rectifier surge suppressor occurs,
Figure 120. Simplified schematic diagram of static exciter.