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IB00405004E-70-8664 For more information visit: www.eaton.com
Instructional Booklet
Effective: June 2007 Page 9
Instruction Manual for the Eaton RTC-50
Automatic Transfer Switch Controller
APPENDIX A: OPERATIONAL FLOWCHART
Utility is available
Is Generator
available?
N
ATS connects to Utility
(Utility Close Output closes)
TDNE timer times out
(20 sec or 50 sec)
Transfer to Generator
(Gen Close Output closes)
Y
Generator is powering the load
TDEN timer times out
(10 sec)
N
Is Utility
available yet?
Y
Utility is powering the load
Utility is powering the load
Generator shuts down
Transfer to Utility
(Utility Close Output closes)
Is Utility
available?
Y
N