Solar Panel String Length

Note that in most cases the 6000w limit is going to dictate string size.

Solar panel string length.

String sizing is simple as well the minimum input is eight solar panels per string and the maximum rated wattage is 5250w per string. It also has a rated current that the inverter needs to function properly. Multiple allowable string sizes. Addition of se10000h us and se11400h us models changed p300 to p320 changed p800 to p800p p850 p860 version 1 2 may 2018.

Solar panel string sizing. The inverter appropriately called a string inverter has three string inputs. Product renaming changed single phase hd wave inverters to single phase inverters with hd wave. That means that we have the flexibility of choosing 15 16 or 17 modules connected in series on one string.

Wiring solar panels when using a string inverter. Since a se7600a us grid tie i n v e r t e r can handle up to 10 250w input from a solar panel array it s easy to see that you can wire up to two strings of 5125w into the 7600w. That means that for this system a string size ranging anywhere from 8 17 panels would work. Depending on the available installation space and system layout we might need to use a mix of string sizes.

This makes it possible to select an appropriate inverter for the array and make sure that the system. We round down to a max string size of 17 panels. String inverters have a rated voltage window that they need from the solar panels in order to operate. Version 1 3 december 2018 application note solaredge string sizing north america revision history version 1 3 december 2018.

A panel string is a group of panels wired into a single input on your inverter. Divide the panel wattage by the maximum string input to ballpark your maximum string size. Solar panel wiring aka stringing and how to string solar panels together is a fundamental topic for any solar installer. Solar inverter string design calculations for many new to photovoltaic system design determining the maximum number of modules per series string can seem straight forward right.

Simply divide the inverter s maximum system voltage rating by the open circuit voltage voc of the module used and you re good. String inverters have maximum power point trackers mmpt in them that can vary the current and voltage to produce the. For example this grid tied system contains 24 mission solar 360w panels and one sma sunny boy 7700w inverter. The number of panels a string inverter can handle depends on several factors including the output current and voltage of the panel you are using the number of strings allowed by the inverter the maximum and minimum voltage allowed per string for the inverter and the minimum ambient temperature for your location.