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 .................................................................................. 5
2.1 Key elements of an APsystems system ............................................................................................................ 5
2.2 The advantages of an APsystems system......................................................................................................... 6
3.APsystems Microinverter DS3 series Introduction ............................................................................ 7
3.1 Characteristics of the DS3 microinverter ......................................................................................................... 7
3.2 Features of the DS3 microinverter ................................................................................................................... 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 Installation Procedures ...................................................................................................................................... 9
4.3.1 Step 1 - Verify that grid voltage is matching with microinverter rating ............................................ 9
4.3.2 Step 2 – Y3 AC Bus Cable distribution .................................................................................................. 9
4.3.3 Step 3 - Attach the APsystems Microinverters to the Racking ........................................................... 9
4.3.4 Step 4 - Ground the system ................................................................................................................. 10
4.3.5 Step 5 - Connect the APsystems microinverter to AC bus cable ...................................................... 10
4.3.6 Step 6 - Install a Bus Cable End Cap at the end of AC bus cable ...................................................... 11
4.3.7 Step 7 - Connect APsystems Microinverters to the PV Modules ..................................................... 12
4.3.8 Step 8 - Complete the APsystems installation map .......................................................................... 13
4.3.9 Step 9 - Warning Notice ....................................................................................................................... 13
5. Microinverter system operating instructions .................................................................................. 14
6.Troubleshooting ................................................................................................................................... 15
6.1 Status Indications and Error Reporting .......................................................................................................... 15
6.1.1 Start up LED ........................................................................................................................................... 15
6.1.2 Operation LED ....................................................................................................................................... 15
6.1.3 GFDI Error .............................................................................................................................................. 15
6.2 ECU_APP ............................................................................................................................................................ 15
6.3 Installer EMA (web portal or EMA Manager APP) ........................................................................................ 15
6.4 Trouble Shooting Guide ................................................................................................................................... 15
6.5 APsystems Technical Support.......................................................................................................................... 16
6.6 Maintenance ..................................................................................................................................................... 16
7.Replace a microinverter ...................................................................................................................... 17
8.Technical Data ...................................................................................................................................... 18
8.1 DS3 series Microinverter Datasheet ............................................................................................................... 19
9. DS3 series - Wiring Diagram .............................................................................................................. 20
9.1 Sample Wiring Diagram - Single Phase .......................................................................................................... 20
10 APsystems Microinverter & Energy Communication Unit Installation Map ............................... 21