Eaton ATC-600 - Appendix E: Operational Flowcharts

IB ATS-1005 For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2010 Page 33
Instructions for Installation, Operation and Maintenance of the
Eaton ATC-600 Automatic Transfer Switch Controller
Appendix E: Operational Flowcharts
• Utility - Generator Transfer Switch
• Dual Utility Transfer Switch
• In-phase Transition Implementation
Source 1 is available
Is Source 2
available?
Close Source 2 breaker
(Momentarily energize K4)
N
Utility - Generator Transfer Sw itch
Close Source 1 breaker
(Momentarily energize K3)
Source 1 becomes unavailable
(or Engine Test, Plant Exerciser, Go To Emergency)
TDES timer times out
Send “Engine Start” signal
(Energize Gen Start relay)
TDNE timer times out
Open Source 1 breaker
(Energize K2)
Y
Source 2 i s powering the load
TDEN timer times out
Open Source 2 breaker
(Energize K1)
Close Source 1 breaker
(Momentarily energize K3)
N
Is Source 1
available yet?
Y
Source 1 i s powering the load
TDN timer t imes out
(if Option 32A is enabled)
TDN timer t imes out
(if Option 32A is enabled)
Source 1 i s powering the load
TDEC timer times out
Remove “Engine Start” signal
(De-energize Gen Start relay)
Send Pretransfer signal. TPRE times out.
(if Pretransfer enabled)
Send Pretransfer signal. TPRE times out.
(if Pretransfer enabled)