Installation and Operation Manual (Rev B)
37
8. Commissioning the Inverter PV System
Before commissioning, ensure that the inverter is mounted, all connections are made and the
inverter is ready to power up.
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.
WARNING:
Connecting the inverter to the electric utility grid must only be completed
after receiving prior approval from the utility company. Installation must be performed
only by qualified personnel/licensed electrician(s).
NOTE:
With the PV modules connected and inverter disconnect switches 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.
Turning on the Inverter
Turn on the dedicated three-phase circuit breaker or disconnect switch at the building
service.
For PVI-14TL, turn on AC disconnect first followed by the DC disconnect.
For PVI-20TL, turn on the inverter’s integrated disconnect.
Operation
The inverter will connect to the electric grid when the DC voltage first exceeds 300VDC (strike
voltage) and 200W of power is available. The inverter will shut down when the DC voltage falls
below 180VDC.
Turning off the Inverter
For PVI-14TL, turn off the DC disconnect followed by the AC disconnect.
For PVI-20TL, turn off the inverter’s integrated disconnect switch.
