Electrical Disturbance

The Oscillatory Surge Withstand Capability (SWC) test:

  • Is an electromagnetic capability test
  • Evaluates the immunity of devices to the 1MHz oscillatory switching transients that occur in substation environments as a result of switching
  • SWC is a transient phenomenon of the conducted type


  • SWC simulations in direct or indirect coupling modes up to 3 kV
  • Standards conformance testing to IEEE C37.90.1

IEEE C37.90.1 Oscillatory SWC Test

IEEE C37.90.1 Oscillatory SWC Test