Annoying PWM sound from Xantrex inverter
I finally got my Xantrex ProWatt SW 2000 installed into my rig. Functionally, everything seems great. I can run the hair dryer (on 800W setting anyway) and microwave at the same time. I finished...
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Here is a note from Tristar:
PWM Noise: In some installations, the PWM charging may cause audible noise in certain equipment. If this occurs, the PWM can be changed to “OnOff” solar charging to reduce the noise. This requires DIP switch number 8 to be turned On. However, it is strongly recommended to try to remedy the noise problem with grounding or filtering first, because the benefits from PWM battery charging are significant.
See page 28
Unfortunately no real suggestions for grounding or filtering.
PWM Noise: In some installations, the PWM charging may cause audible noise in certain equipment. If this occurs, the PWM can be changed to “OnOff” solar charging to reduce the noise. This requires DIP switch number 8 to be turned On. However, it is strongly recommended to try to remedy the noise problem with grounding or filtering first, because the benefits from PWM battery charging are significant.
See page 28
Unfortunately no real suggestions for grounding or filtering.
