Table of Contents
Important Safety Instructions..............................................................................................................2
Safety Instructions................................................................................................................................................ 2
Radio Interference Statement.............................................................................................................................. 3
APsystems Microinverter System Introduction.................................................................................. 4
APsystems Microinverter YC500A Introduction..................................................................................6
APsystems Microinverter System Installation.................................................................................... 7
Additional Installation components from APsystems..........................................................................................7
Required Parts and Tools from you......................................................................................................................7
YC500A Installation Procedures............................................................................................................................8
Step 1 - Installing the AC Branch Circuit AC Isolator.................................................................................... 8
Step 2 - Attaching the APsystems Microinverters to the Racking or the PV Module Frame...................... 9
Step 3 - Connecting the APsystems Microinverter AC Cables....................................................................10
Step 4 - Connecting APsystems Microinverters to the PV Module............................................................ 11
Step 5 - Completing the APsystems Installation Map................................................................................ 12
APsystems microinverter system operating instructions................................................................. 14
Troubleshooting................................................................................................................................. 15
Status Indications and Error Reporting...............................................................................................................15
Start up LED.................................................................................................................................................15
Operation LED............................................................................................................................................. 15
Other Faults.................................................................................................................................................15
Troubleshooting a non-operating APsystems Microinverter............................................................................. 16
Replace a microinverter.....................................................................................................................17
Technical Data.................................................................................................................................... 18
APsystems YC500A Microinverter Datasheet..................................................................................................... 19
Wiring Diagram.................................................................................................................................. 19
Sample Wiring Diagram - Single Phase...............................................................................................................20
Sample Wiring Diagram - Three Phase............................................................................................................... 21
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