[Video] Inverters: How to Connect Higher Power Single Phase Inverters


SolarEdges optimize inverter solution allows
installers to build strings of five thousand two hundred and fifty watts each. That allows
an installer to build over a ten kilowatt array on just two strings. I’m here with Jeff
Morosetti head of the US Support for SolarEdge. Jeff can you talk us through the connections
on the SolarEdge inverter? Sure. To connect the inverter to the AC and DC power sources
SolarEdge provides a safety switch with all the necessary connections. Before wiring the
safety switch you want to verify safety C voltage and polarity. When measuring the voltage
on the incoming PC lines we can check that we have our connections done properly and
that the system is wired as expected. Check that the polarity is correct as well. Each optimizer
will help put one volt PC. Each series of optimizers will upload a total voltage roughly
equal to the total number of optimizers. Next check which version of terminal blocks you
have they are all basically the same with some differences in appearance. For some inverters
the DC terminal blocks look like this, if you see this style of terminal block you will
need to insert the DC wire here by pressing here with a screw driver. Don’t insert the
wire here as this will not be as secure connection. For other inverters the DC terminal blocks
look like this, insert the wire here while pressing down on the screwdriver here. For the high power AC terminal blocks you will need to rotate the screwdriver counter clockwise here then insert the wire here. So let’s walk though these connections first connect
the AC wires, stripe the wire ends about one and three eights inch, connect the grounding
wire first. The three to six kilowatt inverters are different than the high power inverters
so pay attention to the labeling. Connect the DC equipment ground connector to the equipment
grounding terminal blocks and the AC DC safety switch. Connect the DC wires from the PV installation
to the DC positive and the DC negative terminal blocks. Use a standard straight bladed screwdriver
to connect the wires to the spring clamp terminals. Insert the wire fully no exposed copper should
be shown. Thank you for joining us today at the SolarEdge University and stay tuned for
more how to videos from SolarEdge.

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