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  1. spudgunblunder

    VFD Under Voltage Fault

    Hi all, I've had 2 single phase to 3 phase 2.2kw 10A VFDs for several years now with no issues. One on my lathe, one on a mill. Recently got an INTERMITTENT error of UU undervoltage (on both VFDs). It can run fine for ages then suddenly trip. Sometimes under load, sometimes not. Tried with...
  2. spudgunblunder

    Common Datum System of Rectangular Pattern of Holes

    Hi all, Does the common datum system A (of 4 centres) control the slot to be symmetrically within a tolerance zone of 0.5mm along the TED line between the holes? Ref section 6.6.4 of BS 8888:2020 (not sure if I can upload screen shot?)

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