Failures in Dry-Type transformers D5Explore further
2013-10-15u2002·u20022) Cast coil (or cast resin) The winding method for cast coils is basically the same as that for VPI transformers, the difference being that the coils are placed in a mold after winding and resin is introduced under vacuum, after which the coil is placed in an oven for several hours for the resin to cure. The mold is then removed,
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