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Home›Repair guides›Automatic Transfer Switch Operation Test

Transfer Switches - Eaton Cutler Hammer — Automatic Transfer Switch Operation Test

A Transfer Switches - Eaton Cutler Hammer service procedure — check it applies to your exact model before use.

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Procedure

  1. Check to ensure that the normal switching device is in the CLOSED position.
  2. Initiate an automatic transfer operation from the normal to emergency power source.
  3. Initiate an automatic transfer operation back to the normal power source after the Time Delay Emergency to Normal timer (TDEN) and Time Delay Neutral Timer have expired.

Source: manual:ATC-100 manual Contactor Based IB01602017E rev2009.PDF. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.