Re: MidNite Solar Classic 150 , XW60 or FM80-150V MPPT Charge Controller?
In general, I like the Classic as well, but because the inverter is a Xantrex XW and is planning to be grid-tied (that is use the "Sell" mode), I think you need to also use a Xantrex charge controller as they need to play together using the Xanbus. Maximum harvest of solar power on these hybrid systems is tricky as there is a conflict between keeping the batteries as charged up as possible and exporting as much power as possible. The Inverter wants to keep the batteries charged to be ready for an outage, where the charge controller will shut down when the batteries get full. Xantrex has a special mode to try to handle this, but the XW needs to be able to take command of the CC. Also, the XW software needs to be up to date. Will also need the special external control panel for the XW (can't even set it for Sell mode without it). A large battery bank is helpful to minimize the voltage swings caused by the Inverter / Charger push-pull.
2.7kW Trina/Xantrex GT, 2.7kW Trina/SolarEdge, 2kW CSI/SMA GT, Solar well pump on 6, 25yr old Holeck 48W modules. Toyota SR5 converted to 108V EV. Prius w/Enginer PHEV conversion. BSEE, C11-residential, NABCEP, SunnyPro >450kW installed
"Faced with the choice between changing one's mind and proving that there is no need to do so, almost everyone gets busy on the proof." - John Kenneth Galbraith