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  1. 07-01-2019 #3
    Neale's Avatar
    Lives in Plymouth, United Kingdom.
    Neale
    Last Activity: 2 Days Ago Has been a member for 9-10 years. Has a total post count of 1,740. Received thanks 297 times, giving thanks to others 11 times.
    Be aware that using an EMI filter can cause problems if your supply comes via a RCD, as it can cause unbalanced live/neutral currents. I have an inverter with built-in EMI filter and there is a warning in the manual about this. I personally don't use one with either of my inverters and don't have problems but it's a very situation-dependent thing. The filter is nothing to do with protecting motor or VFD - it is to prevent interference generated by the VFD going back up the line and interfering with other equipment.
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