PVI 3000S, 4000S, 5000S, 5300 Series Inverters
Installation and Operation Manual (Rev A)
34
NOTE:
Make sure all tools, parts, etc. are removed from the vicinity of the inverter
before turning on.
WARNING:
Make a final check of all AC and DC wiring to the inverter and in the
system before turning on.
NOTE:
With the PV modules connected and inverter disconnects still off, perform a
final check of the PV voltage and polarity once more using a digital volt meter and
probing the positive (+) and negative (-) PV connections. Verify that voltage is less
than 600V.
5.1
Turning on the Inverter
•
Turn on the dedicated 2-pole circuit 240/208VAC circuit breaker on the home/building
electrical panel
•
Turn on the system AC disconnect (if the system is equipped with additional AC
disconnect)
•
Turn on the DC/AC disconnect on the inverter.
•
Watch the LED indicators for initialization (all three LEDs on) and LCD messages.
•
Watch for blinking green LED and LCD messages indicating 5 minute connect to grid time
and following this time, the inverter will be on-line and beginning to feed power into the
AC circuit, the inverter is operating normally
•
Lastly, look for a steady green LED indicating the inverter has stabilized at Maximum
Power Point
5.2
Operation
The control electronics will be active as soon as DC (PV) voltage reaches 200VDC. The inverter
will go on-line with the utility/building grid when the DC voltage first exceeds 235VDC (strike
voltage). Next, the inverter will load the array, bringing the DC voltage down from 235VDC to no
less than 200VDC.
Once there is enough PV power at 200VDC to back feed, AC power switching will automatically
feed power to the grid. (The inverter will always wait 5 minutes after being turned on and being
within proper grid voltage range, before going into grid-feed mode).
Because the inverter goes completely off line at night or in dark conditions when no power can be
produced, the standby losses are less than 0.5 Watt.
5.3
Turning off the Inverter
•
Turn off the DC/AC disconnect on the inverter.
•
Wait at least one minute for the capacitor bank to discharge.
6.0 LCD Display, LED Indicators, Errors and Messages
The inverter operates automatically without the need for user interaction. The inverters
microcontroller runs through various checks before going online with the grid and feeding power