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  1. Lenze AC Controller VFD Upgrade

    Controllers
    Does anyone here have experience with the internals of Lenze 9300 series industrial Variable Speed Controllers? Specifically, the Lenze 9327, 9328 and 9329 (16, 22 and 30kW) all come in the same case size and weight. I have pulled my 9327 apart and it looks as if standard larger IGBTs will fit...
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