TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS 1
Radio interference statement 2
APsystems YC500-A System Introduction 3
APsystems microinverter system installation 6
Additional installation components from APsystems 6
Required parts and tools from installer 6
Installation procedures 7
Step 1 – Installing the AC Branch Circuit Junction Box
Step 2 – Attaching the APsystems microinverters to the racking or the PV
module frame 8
Step 3 – Connecting the APsystems microinverter to the PV module 9
Step 4 – Ground the system 10
Step 5 – Connecting APsystems microinverters to the AC cables 11
Step 6 – Completing the APsystems installation map 12
APsystems microinverter system operating instructions 13
Troubleshooting 14
• Status indications and error reporting 14
• Operation LED 14
• GFDI error 14
• Other faults 14
Troubleshooting a non-operating APsystems microinverter 15-16
Replace a microinverter 17
Technical data 18-19
Efficency curves 20
Wiring diagrams 21
• Sample wiring diagram – 120V/240V split phase 21
• Sample wiring diagram – 120V/ 208V three phase 22
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APsystems YC500-A Installation/User Manual