Automatic Transfer Operation; Automatic Sequence Of Operation; Utility Failure; Cranking - Generac GT-530 El Manual Del Propietario

Operation
3.4 — Automatic Transfer Operation
To select automatic operation:
Make sure the transfer switch main contacts are
1.
set to the UTILITY position (loads connected to the
utility power source).
Be sure that normal UTILITY power source voltage
2.
is available to transfer switch terminal lugs N1 and
N2.
Press the AUTO button on the control panel
3.
interface.
Set the main circuit breaker (Generator Discon-
4.
nect) to the ON (Closed) position.
With these steps complete, the generator will start auto-
matically when utility source voltage drops below a preset
level. After the unit starts, loads are transferred to the
standby power source.
3.5 — Automatic Sequence of
Operation
3.5.1— Utility Failure
With the generator set to AUTO, when utility fails (below
65% of nominal) a 5 second (dealer programmable) line
•
•
MANUAL
•
•
•
AUTO
•
•
•
•
EXERCISE
•
NOTE: Important! If it is necessary to turn off the
generator during prolonged utility outages to perform
maintenance or conserve fuel, follow these steps.
To turn OFF the generator (while running in AUTO and
on-line):
Turn OFF (or OPEN) the main utility disconnect.
1.
Turn OFF (or OPEN) the main line circuit breaker
2.
(MLCB) on the generator.
12
Will not transfer to generator if utility is present.
Will transfer to generator if utility fails (below 65% of nominal for 5 consecutive seconds).
Will transfer back when utility returns for 15 consecutive seconds. The engine will continue to
run until removed from the MANUAL mode.
Will start and run if utility fails for 10 consecutive seconds. (factory default)
Will start a 5 second engine warm-up timer.
–
Will not transfer if utility subsequently returns.
–
Will transfer to generator if utility is not present.
Will transfer back to utility once utility returns (above 80% of nominal) for 15 seconds.
Will not transfer back to utility unless utility returns. The generator will shut down if the OFF
button is pressed or a shutdown alarm is present.
Once utility power is returned, the generator will shut down after 1 minute cool-down time.
Will not exercise if generator is already running in either AUTO or MANUAL mode.
During exercise, the controller will only transfer if utility fails during exercise for 5 seconds,
and will switch to AUTO.
interrupt delay time is started. If utility is still gone when
the timer expires, the engine will crank and start. Once
started, a 5 second engine warm-up timer will be initi-
ated. When the warm-up time expires, the controller will
transfer the load to the generator. If the utility power is
restored (above 80% nominal) at any time from the initia-
tion of the engine start until the generator is ready to
accept load (5 second warm-up time has not elapsed),
the controller will complete the start cycle and run the
generator through its normal cool down cycle, however,
the load will remain on the utility source.
3.5.2— Cranking
The system will control the cyclic cranking as follows:
• 5 cranking cycles as follows: 16 second crank,
seven (7) second rest, 16 second crank, seven (7)
second rest, followed by three (3) additional cycles
of seven (7) second cranks followed by seven (7)
second rests.
3.5.3— Load Transfer
The transfer of load when the generator is running is
dependent upon the operating mode:
Turn the generator OFF.
3.
To turn the generator back ON:
4.
Put the generator back into AUTO and allow to
5.
start and warm-up for several minutes.
Turn ON (or CLOSE) the MLCB on the generator.
6.
Owner's Manual for 50 Hz Air-cooled Generators