APsystems Microinverter QT2 Installation Manual
Table of Contents
1. Important Safety Instructions.............................................................................................. 2
1.1 Safety Instructions ....................................................................................................................................2
1.2 Radio Interference Statement ............................................................................................................. 3
1.3 Symbols replace words on the equipment, on a display, or in manuals .............................. 4
2. APsystems Microinverter System Introduction ............................................................ 4
3. APsystems Microinverter QT2 Introduction ...................................................................7
4. APsystems Microinverter System Installation ...............................................................8
4.1 Additional accessories supplied by APsystems ........................................................................... 8
4.2 Other required accessories not supplied by APsystems ......................................................... 8
4.3 PV Rapid Shut Down Equipment ......................................................................................................9
4.4 Installation Procedures....................................................................................................................... 10
4.4.1 Step 1 - Verify that grid voltage matches microinverter rating .................................10
4.4.2 Step 2 – Y3 AC Bus Cable distribution ..............................................................................10
4.4.3 Step 3 - Attach the APsystems Microinverters to the Racking ................................10
4.4.4 Step 4 - Ground the system ..................................................................................................11
4.4.5 Step 5 - Connect the APsystems microinverter to AC bus cable ........................... 12
4.4.6 Step 6 - Install a Bus Cable End Cap at the end of AC bus cable .......................... 13
4.4.7 Step 7 - Connect APsystems Microinverters to the PV Modules .............................13
4.4.8 Step 8 - Complete the APsystems installation map .....................................................15
5. APsystems microinverter system operating instructions ....................................... 16
.6. Troubleshooting .................................................................................................................... 16
6.1 Status Indications and Error Reporting ......................................................................................... 17
6.1.1 Start up LED .................................................................................................................................. 17
6.1.2 Operation LED ............................................................................................................................. 17
6.1.3 GFDI Error ..................................................................................................................................... 17
6.2 ECU_APP ................................................................................................................................................. 17
6.3 Installer EMA (web portal or EMA Manager APP) ....................................................................17
6.4 Trouble Shooting Guide ..................................................................................................................... 17
6.5 APsystems Technical Support ..........................................................................................................18
6.6 Maintenance ............................................................................................................................................18
7. Replace a microinverter ....................................................................................................... 19
8. Technical Data ......................................................................................................................... 20
9. QT2 - Wiring Diagram.......................................................................................................... 22
9.1 Sample Wiring Diagram .......................................................................................................................22
10. APsystems Microinverter Installation Map ................................................................. 23
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