Appendix C: Operational Flowcharts - Eaton ATC-900 Operation And Maintenance Manual

Instructional Booklet
Effective: March 2021 Page 45
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900

Appendix C: Operational Flowcharts

• Open Delayed Transition (Contactor, MCCB, Power)
• Open In-Phase Transition (Contactor, Power)
• Closed Transition (Contactor, Power)
• The use of TDND, TDNR, TDED, and TDER timers.
Note: These flowcharts refer to "breaker" or "contactor."
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