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  1. power82

    Reasons for Backfeed on Open Wye-Open Delta Banks

    Let's say you've got a grounded wye system with two UG loops feeding two single phase transformers for a lift station. The transformers are connected open delta on the secondary. One of the loops is de-energized. Can this loop be re-energized from backfeed from the adjacent transformer?
  2. power82

    Reasons for Backfeed on Open Wye-Open Delta Banks

    Under what cirumstances can an open wye-open delta bank backfeed? I can see how it could happen if load is connected, but not without load.
  3. power82

    Link Break Disconnects

    On distribution systems, in areas of higher fault current, or higher system voltages, especially on heavily loaded UG laterals, construction crews would rather disconnect the load using a link break disconnect, as opposed to opening the cutout door. The question which has come up is whether...
  4. power82

    Coordination of Reclosers used in Sectionalizing

    How do you coordinate the instantaneous settings of breakers and downstream sectionalizing reclosers without reducing the reach of the breaker?

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