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  • Users: BSEEDan23
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  1. BSEEDan23

    Why is a 7.5 Watt light bulb used in series w/fluke when doing in service readings on POTS

    A 138KV CCVT was replaced and the CCVT was to be energized with no load while in service checks were done. Basically the procedures call to use a 7.5W light bulb in series with the fluke. One lead to the neutral test switch and the other lead from the fluke to the light bulb to the A phase...
  2. BSEEDan23

    Teaching Phase Relations Determination using 2 pieces of paper (1 transparent) has anyone done this?

    I'm tasked with visually explaining the connection change between an existing 30 degree lagging transformer to a new 330 degree lagging or (30 degree leading) transformer. Both transformers are Delta- Wye. Instructions read: Draw and label the voltage vector diagram including the high and low...

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