Ferroresonance Guidelines for Additional Padmount Transformer Types

Create guidelines specifying the maximum cable length which can be switched for the following types of transformers without excessive overvoltage.

  • delta primary three-phase padmount transformer
  • grounded-wye primary three-phase transformers having amorphous metal cores
  • grounded-wye primary three-phase transformers having five-leg stacked cores.

Tagged: P1a-4, P4, Equipment Testing/Evaluation, Engineering Guidelines