a. Though the generator, AVR and
auxiliary devices are solid and well insulated, if the generator was stored for
longtime it might be moistened, and should be inspected carefully before
operation.
b. Measure the insulating
resistance, of winding against the ground by ohmmeter, if the value is less
than 2 in cold condition, the generator should be dried. Caution: At measuring,
the electronic elements and capacitor should be shorted, and the AVR. should be
disconnected to avoid damaged.
c. Make sure all connecting
joints are tight and contact good.
d. Be sure the frame is properly
grounded, and ground wire should be same as the size of lead-wires。
e. Make familiar with the rated
data of nameplate before operation.
2. Voltage adjustment
In general, the generator was
carefully inspected and tested in operation before it left the factory, and the
normal voltage has been corrected, so it is not necessary to adjust. If
necessary, the setting potentiometer of voltage may be adjusted again. If the
external potentiometer is used for remote control , it also can be adjusted to
set the voltage.
3. AVR. Wiring
The wiring diagram of Sx440 and
APR125-5 are shown as Fig .1 Fig .2. The end 3 and 4 of AVR are also connected
to the 190V-240V, but there is a plug wire that should be put in the
"50Hz" or "60Hz" position.
Operation
After inspection and adjustment
have been made, and no trouble is found , the generator can run normally and
generate the electricity. In order to keep generator run well, please remember
following notices;
a. The generator output must be
disconnected from the load , then start the prime mover.
b. Check the speed and adjust to
the rated RPM, the voltage of generator w… get to normal value, then close the
main circuit breaker to the load. The genset speed may be changed under load ,
and frequency may be tower than the normal frequency , check and adjust the
speed as necessary.
c. Before shut down the genset,
remove load and turn off the main circuit breaker. This is especially important,
or the loss of residue magnetism can result.
d. If starting up the generator
for first time or the generator stored for longtime, generator may be loss of
the residue magnetism, and voltage can not built up,should charge to F+ and F-
with DC 12V voltage , the "+" touch to F, and the" -" touch
to F- for 15-20 seconds. Caution: the generator must be stud still during
charging the magnetism, or AVR may be damaged.
e. Three phase AC generator
should be operated at balanced load. Should pay more attention to the load and the
balance of current to prevent the generator loaded on the single phase or
serious unbalancing condition, or the AVR. and generator can be damaged.
The following image shows Starlight generator manufacturing workshop.
Comments
Post a Comment