Copyright © 2012 CyberPower Systems, Inc.
Startup Procedure
11
Check the PV Array DC Voltage
1.
Uncover the PV arrays and expose them to full sunlight. The sunlight must be intense enough to produce the required
output voltage.
2.
Measure the PV array open circuit DC voltage across the DC positive (+) and negative (-) terminals. This voltage must
greater than 100 volts DC (to energize the electronics) and less than 550 volts DC (to prevent damage to the On-grid Solar
Power Generating System).
Check the AC Utility Voltage
1.
Switch on the main and On-grid Solar Power Generating System breakers in the main electrical service panel.
2.
Using an AC voltmeter, measure the AC open circuit utility voltage between L (L1) and N (L2). Ensure the voltage is at
approximately the nominal value. The On-grid Solar Power Generating System operates with the voltage range around the
nominal value.
See “Electrical Specification”, output section for the utility voltage operating range for your On-grid Solar Power Generating
System model.
Start up the On-grid Solar Power Generating System
1.
Switch the DC and AC disconnection switches (breakers) to the ON position.
2.
Check the On-grid Solar Power Generating System LCD. The startup screens should appear for several seconds, and then
the “Countdown xx:xx” special screen will appear until protection timer countdown is completed.
Disconnect Test
The disconnect test is designed to verify correct operation of the On-grid Solar Power Generating System both on initial
operation and periodically through its life as required by the utilities. This test ensures that On-grid Solar Power Generating
System dose not send electricity to the utility grid when local utility has shut off the grid for repairs, or when the utility wiring
is damaged.
To run the disconnect test
1.
Switch off the AC circuit for the On-grid Solar Power Generating System
This can be accomplished by switching the breaker on the main panel that feeds the On-grid Solar Power Generating
System. The disconnection for the home or business may be used as well.
2.
Have someone watch the front panel of the On-grid Solar Power Generating System to ensure the green light on the front
of the On-grid Solar Power Generating System goes out.
The green light goes out when AC circuit is switched off, disconnecting the On-grid Solar Power Generating System from
the AC grid. The front panel display will show an AC voltage and frequency fault display, indicating that the AC is out of
the operating range.
3
Switch on the AC circuit for the On-grid Solar Power Generating System
The On-grid Solar Power Generating System responds by starting it reconnecting protection timer. Ensure that the
On-grid Solar Power Generating System does not produce power before the countdown is over. After completing the
