JnJnKatiebug wrote:
I am thinking about changing my fridge out to a residential unit but I would need to be able to run it from my inverter for up to 8 hours at a time. (I have 4 new Trojan T105 batteries) I have read where the residential refrigerators do not work on Modified Sine Wave. In my manual it says my inverter (Xantrex Freedom 458) is a Filtered Modified Sine Wave. What is the difference between Modified Sine Wave and Filtered Modified Sine Wave? Does anyone have any experience running the residential fridge on this inverter? I do not want to change out the inverter to a Pure Sine Wave.
If you have a fridge with a std 60 hz induction motor, likely will work just fine with most MSW inverters. been doing that for over 10 years with a dorm fridge. Not as efficient as a 60 hz sine wave, will have some additional losses but likely not be an issue.
However, if you have a newer energy efficient fridge that has a dc motor running off a controller, you may or may not have a problem. that will depend on the controller and input circuit and power supply for the motor and controller. They are in all likelyhood designed and tested for a nominal 120V 60 Hz AC supply.
