Chapter 4: Connecting the AC and the Strings
to the Inverter
This chapter describes how to connect the inverter to the AC grid, and to the strings of
modules with power optimizers.
If using an inverter with a DC Safety Unit, refer to the instructions in
Connecting the AC
and DCStrings to the DC Safety Unit
on page 85.
Refer to the technical specifications provided with the inverter.
Grid Connection Guidelines
In most countries, three phase inverters require neutral connection at all times.
In some countries, the three phase inverters can be connected to delta grids; in
other cases, multiple single phase inverters can be used.
Prior to system installation, refer to:
Three Phase Inverters for Delta Grids application note at
https://www.solaredge.com/sites/default/files/se_three_phase_
inverters_for_delta_grids.pdf
Supported Countries application note to confirm compatibility at
http://www.solaredge.com/sites/default/files/se_inverters_
supported_countries.pdf; installing without confirmation
may void the inverter warranty.
For more wiring information refer to the
SolarEdge
Recommended AC Wiring Application Note
, available on the
SolarEdge website at http://www.solaredge.com/files/pdfs/application-
note-recommended-wiring.pdf.
For recommended circuit breaker size per model refer to
Determining the Circuit Breaker Size
on page 98
Chapter 4: Connecting the AC and the Strings to the Inverter 31
Three Phase System Installation Guide MAN-01-00057-4.1
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