The Green Project - 6.1 KVp Grid Intertied

Louisiana Homepower, a division of Gulf South Solar has completed installation of Louisiana's largest grid-tie PV system. The Green Project photovoltaic system is powered by 72 – 85 watt Shell Solar SQ-85P modules. They are configured in 4 strings of 18 to produce approximately 5 amps @ 310 vdc. The strings are combined at the inverters to provide approximately 10 amps to each inverter.

The modules are mounted on 12 - 12 foot long UniRac Solar Mount racks that are bolted with 6” lags through the steel roof into pine 2x4’s to achieve the wind load requirements.

The DC voltage from the modules is isolated from the inverters with two Square D 600 volt disconnects on the left side of the panel. Delta Lightning protection is provided before the disconnect switches.

Two SMA Sunny Boy 2500 inverters take the solar input DC from the module strings and output 240 VAC to the grid. The outputs are isolated from the existing power three-phase distribution panel with two Square D AC disconnects located on the right side of the panel. The inverters have SMA temperature-controlled fans added for indoor use and to operate at maximum efficiency.

System performance is remotely monitored via a hardwired RS-485 communication link to a Sunny Boy Control. The SBC then has the ability to output to a local PC in the conference room. Future capability includes scrolling lobby displays and a large flatscreen monitor.

For more information contact Jeff Shaw - System Engineer