IB ATS-C103
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2012
Page
35
Instructions for Installation, Operation and Maintenance of the
Eaton ATC-800 Closed/Open Transition Transfer Switch Controller
Source 1 is available
Is Source 2
available?
Close Source 2 breaker
(Momentarily energize K4)
N
Dual Utility Transfer Switch
Close Source 1 breaker
(Momentarily energize K3)
Source 1 becomes unavailable
(or Go To Emergency)
TDNE timer times out
Open Source 1 breaker
(Energize K2)
Y
Source 2 is powering the load
Close Source 1 breaker
(Momentarily energize K3)
Source 1 is powering the load
TDN timer times out
(if Option 32A is enabled)
TDN timer times out
(if Option 32A is enabled)
Source 1 is powering the load
N
Is Source 1
available yet?
TDEN timer times out
Y
Open Source 2 breaker
(Energize K1)
Send Pretransfer signal. TPRE times out.
(if Pretransfer enabled)
Send Pretransfer signal. TPRE times out.
(if Pretransfer enabled)
