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  • Users: bluesman70
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  1. bluesman70

    Transformer problems?

    I was at a customers site and I was troubleshooting on the VFDs ( Variable Frequency Drives) AC of course.It was tripping out on high DC link voltage...anyway that not the issue.I measured the following on the motor. L1-ground = 440 V AC L2- ground = 440 V AC L3- ground = 55 V AC I went to the...

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