Generator Tests Under Load; Checking Automatic Operation; Testing Overload Prevention Control Board (Opcb) - Generac RTSR800A3 El Manual Del Propietario


Failure to do so may result in damage to cer-
tain rotary equipment.
5. When certain that UTILITY supply voltage is correct and compat-
ible with transfer switch ratings, turn OFF the UTILITY supply to
the transfer switch.
6. Set the generator's main circuit breaker (CB1) to its OFF or
OPEN position.
7. On the generator panel, select the OFF mode to shut down the
generator.
Do NOT proceed until generator AC output voltage and frequency
are correct and within stated limits. If the no-load voltage is
correct but no-load frequency is incorrect, the engine governed
speed probably requires adjustment. If no-load frequency is
correct but voltage is not, the voltage regulator may require
adjustment.
3.4

GENERATOR TESTS UNDER LOAD

1. Set the generator's main circuit breaker to its OFF or OPEN posi-
tion.
2. Manually actuate the transfer switch main contacts to their emer-
gency (Standby) position. Refer to "Manual Operation".
3. To start the generator, select the MANUAL mode or operation.
When engine starts, let it stabilize for a few minutes.
4. Turn the generator's main circuit breaker to the ON or CLOSED
position. The generator now powers all LOAD circuits. Check
generator operation under load as follows:
• Turn ON electrical loads to the full rated wattage/amperage
capacity of the generator. DO NOT OVERLOAD.
• With maximum rated load applied, check voltage and fre-
quency across transfer switch terminals E1 and E2. Voltage
should be greater than 230 volts (240VAC system); fre-
quency should be greater than 59 Hz.
• Let the generator run under rated load for at least 30 minutes.
With unit running, listen for unusual noises, vibration, over-
heating, etc., that might indicate a problem.
5. When checkout under load is complete, set main circuit breaker
of the generator to the OFF or OPEN position.
6. Let the generator run at no-load for several minutes. Then, shut
down by selecting the OFF mode.
7. Move the switch's main contacts back to the UTILITY position.
For example, load connected to utility power supply. Refer to
"Manual Operation". Handle and operating lever of transfer switch
should be in down position.
8. Turn on the utility power supply to transfer switch, using whatever
means provided (such as a utility main line circuit breaker). The
utility power source now powers the loads.
9. Select the generator's OFF mode to shut down the generator.
The system is now set for fully automatic operation.
NOTE:
3.5

CHECKING AUTOMATIC OPERATION

To check the system for proper automatic operation, proceed as fol-
lows:
1. Ensure that the generator is in it's OFF mode.
2. Install front cover of the transfer switch.
3. Turn ON the utility power supply to the transfer switch, using the
means provided (such as a utility main line circuit breaker).
Transfer Switch will transfer back to utility position.
4. Set the generator's main circuit breaker to its ON (or CLOSED)
position.
5. On the generator panel, select the AUTO mode. The system is
now ready for automatic operation.
6. Turn OFF the utility power supply to the transfer switch.
With the generator ready for automatic operation, the engine should
crank and start when the utility source power is turned OFF after a 10
second delay (factory default setting). After starting, the transfer switch
should connect load circuits to the standby side after a five (5) second
delay. Let the system operate through its entire automatic sequence
of operation.
3.6 TESTING OVERLOAD PREVENTION
CONTROL BOARD (OPCB)
A Test push-button is provided on the bottom of the OPCB to test the
operation of the load shed functions. The Test button will work when
the ATS is in the Utility or the Generator position.
1. Turn the Utility supply on to the ATS.
2. Press the TEST push-button on the OPCB.
3. Verify that all of the connected loads to be "shed" become dis-
abled. The method of verification will depend on the type of load.
4. After five (5) minutes verify AC 1 and Load 1 are energized
Status LED AC 1 and Load 1 is ON.
5. After another 15 seconds, verify AC 2 and Load 2 are energized
Status LED AC 2 and Load 2 are ON.
6. After another 15 seconds, verify Load 3 is energized Status Load
3 is ON.
7. After another 15 seconds, verify Load 4 is energized Status Load
4 is ON.
Operation
NOTE:
9