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IB140012EN
For more information visit: www.eaton.com
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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