IB01602017E
For more information visit: www.eaton.com
Instructional Booklet
Effective: July 2010
Page
25
ATC-100 Contactor Based Transfer Switch
Figure 20. Utility - Generator Transfer Switch (Continued).
*
I
s
Utility
a
v
a
il
ab
le yet?
TDEN timer time
s
o
u
t
No
Ye
s
S
ync timer time
s
o
u
t
Open Gener
a
tor
S
witching Device
(Momentarily energize K1)
S
o
u
rce
s
s
ynchronized
b
efore
S
ync timer
time
s
o
u
t
No
Ye
s
a
nd Clo
s
e Utility
S
witching Device
Utility is powering the load
TDEC timer time
s
o
u
t
Remove “Gener
a
tor
S
t
a
rt”
S
ign
a
l
(De-energize the gen start relay)
Open Gener
a
tor
S
witching Device
(Momentarily energize K1)
TDN timer time
s
o
u
t
(If enabled for 3-position
contactor type ATS)
Clo
s
e Utility
S
witching Device
(Momentarily energize K1)
