2022/08/19 Rev 3.0 Quick Installation Guide
Step 5. Connect the APsystems microinverter to AC bus cable
Insert the microinverter AC connector into the trunk cable connector. Make sure to hear the “click” as a
proof of robust connection.
Step 6. Install a Bus Cable End Cap at the end of AC bus cable
Step 7. Place the PV modules and connect each QT2 to the PV modules
NOTE: When plugging in the DC cables, the microinverter should immediately blink green ten times.
This will happen as soon as the DC cables are plugged in and will show that the microinverter is
functioning correctly. This entire check function will start and end within 10 seconds of plugging in
the unit, so pay careful attention to these lights when connecting the DC cables.
WARNING! Double check to make sure all of the AC and DC wiring has been correctly installed.
Ensure that none of the AC and/or DC wires are pinched or damaged. Make sure that all of the
junction boxes are properly closed.
WARNING! Each pv panel must be carefully connected to the same channel.
Never split positive and negative cables into two different channels, otherwise the inverter will be
damaged and warranty will not apply.
NOTE: No neutral wire output from inverter. Compatible with both Delta and Wye 3-phase
grid.
NOTE: AC connector interface as
from left to right.
NOTE: Cover any unused connectors with Bus Cable Y-
CONN Cap to protect the unused connectors.
Best Practice: Use the Bus Cable Unlock Tool of AC Bus
to disconnect the connectors.
25mm-30mm
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