Table of Contents
Read This First .........................................................................................................................3
Important Safety Instructions.......................................................................................................................4
Safety Message Types...................................................................................................................................4
General Safety...............................................................................................................................................5
Disclaimer of Liability....................................................................................................................................6
Chapter 1: Product Overview .......................................................................................... 9
General Description .................................................................................................................9
Dimensional Drawings ...........................................................................................................11
Physical Overview..................................................................................................................12
Bar Code Label.......................................................................................................................12
Specifications.........................................................................................................................13
12A Output Models.....................................................................................................................................13
Chapter 2: Planning Installation..................................................................................... 15
Overview...............................................................................................................................15
Input Criteria .........................................................................................................................15
Acceptable Input Configurations ................................................................................................................15
Acceptable Input Configurations Between Parallel Optimizers..................................................................16
PV System Configurations ......................................................................................................17
Ungrounded PV Systems.............................................................................................................................17
Resistively Grounded PV Systems (positive or negative)............................................................................17
Fuse Sizes ....................................................................................................................................................17
DC-coupled Storage ....................................................................................................................................18
Inter-row Shading Wiring Example .............................................................................................................18
Output Connector Polarity..........................................................................................................................19
Chapter 3: Installing the Ampt String Optimizer............................................................. 21
Getting Started ......................................................................................................................21
Parts and Tools Needed ..............................................................................................................................21
Mounting and Grounding the String Optimizer .......................................................................22
Steps............................................................................................................................................................22
Making Electrical Connections................................................................................................23
Connecting the Inputs.................................................................................................................................24
Connecting the Output ...............................................................................................................................27
Uninstalling an Optimizer.......................................................................................................28
Parts and Tools Needed ..............................................................................................................................28
Steps............................................................................................................................................................28
Appendix....................................................................................................................... 31
