Eagle Eye Power Solutions, LLC | 1-877-805-3377 | www.eepowersolutions.com
OPERATION
TESTING 480VAC THREE PHASE
2-1 SETTING UP THE LOAD BANK - Place the load bank in an area free from fuel, oil, or any other flammable
substance. The load bank should be positioned so that any strong wind or air currents will flow with the air
flow of the load bank.
2-2 APPLYING POWER - The load bank should be connected to the power unit to be tested with an output of
480VAC 3 phase, plug in the 120VAC power cord. Make sure that the main switch and the load switch is set
to off before connecting the cable to the load bank. Use L1 (Black), L2 (Red), L3 (Blue) and N (White), when
testing 480VAC 3 phase circuits. Plug the power cable plug in to the load bank. Turn on the output of the
power unit.
2-3 CHECKING THE POWER - check the following:
A. The amber light,
“A”, “B”,”C” should be on.
B. The VOLTS should read 480VAC.
C. The FREQUENCY should read approximately 60HZ.
D. The AMPS should read 0A.
2-4 APPLYING THE LOAD - If the above steps checked OK, turn the main switch to 480VAC. The fans should
start up and the airflow should be as indicated by the airflow arrow. Next turn on the load switch. Add the load
desired with the rate switch.
A. Step 1 is
12.5 KW
B. Step 2 is
12.5 KW
C. Step 3 is
25
KW
D. Step 4 is
25
KW
E. Step 5 is
25
KW
Check to see that the voltage and frequency does not drop beyond acceptable limits under load.
2-5 SHUTTING DOWN -Return the load and rate switches to the off position and allow the load bank to cool
down before turning the power unit off. Turn the power unit off and disconnect the power cable plug.
