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  1. lowrider87

    dry transformer to convert a 4wire closed delta secondary to a 277/480

    they did not purchase a transformer yet so i just need to know if they can use a dry transformer to convert to 277/480v Someone had doubted if you could go from the 4 wire closed delta voltage supplied by the utility to a wye system using the dry transformer.
  2. lowrider87

    dry transformer to convert a 4wire closed delta secondary to a 277/480

    A customer of ours is supplied witha closed delta 4 wire system 120/240v, they would like to know if they would be able to convert, using a dry transformer to a voltage of 277/480v to run 2 large pieces of equipment.
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