Pre Wired Inverter System Guide
AC Coupled Pre-Wired Inverters
If the utility grid goes down, so does your grid-tie system. This is because a grid-tie inverter feeds excess power back into the utility grid rather than into a battery bank, which is very dangerous if the grid is down because someone is working on it. An AC Coupled system can add battery backup to your grid-tie system, allowing you to take advantage of the benefits of net metering while still receiving limited power during an outage.
AC Coupling is a controlled back-feed to a battery based inverter developed by Midnite Solar. Because a back-feed is hooking up AC to the output of an inverter, it comes as not surprise that normally this will destroy your inverter. However, an AC Coupled system shifts the frequency to match the battery based inverter before connecting, which prevents damage to the inverter.
AC Coupling is available for the SMA Sunny Island, the Outback FX, VFX, and Radian, the Magnum PAE series, and the Schneider Electric Xantrex XW Series.
Grid Tie with Battery Backup Pre-Wired Inverters
Unlike AC Coupled systems, these are inverters that are designed by the manufacturer to work on the grid when it is available and off the grid when it is not. Most of the pre wired systems EcoDirect has available include the inverter, the charge controller, and the electrical safety components needed.
Off-Grid Pre-Wired Inverters
Off-Grid Inverters are designed by the manufacturer to work off the grid, feeding power into a battery bank for storage. Most of the pre wired systems EcoDirect has available include the inverter, the charge controller, and the electrical safety components needed.