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Recent content by sblocker

  1. sblocker

    CURRENT DRAW OF OPEN DELTA BANK

    ALL MEASUREMENTS WERE MADE ON INPUT OF DRIVE. OUTPUT OF DRIVE IS CONSTANTLY CHANGING, WHILE INPUT STAYS CONSTANT. LOAD ON MOTOR IS ASSUMED CONSTANT(WELL IS FULL OF WATER).DRIVE MANUFACTOR CLAIMS THAT ALL RECTIFIERS ARE GOOD.
  2. sblocker

    CURRENT DRAW OF OPEN DELTA BANK

    I HAVE A 120/240 OPEN DELTA TRANSFORMER BANK FEEDING A VFD THAT DRIVES A 10 HP PUMP. THE CURRENTS ARE UNBALANCED (47.9; 24.8; 56.3) WHILE THE VOLTAGES ARE WITHIN 1.2% (243; 246; 240). THE CURRENTS WERE TAKEN ON THE INPUT OF THE DRIVE. iS THIS CURRENT UNBALANCE DUE TO OPEN DELTA CONNECTION...
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