Specifications

60 Distribution Products Catalog CA08101001E—October 2010 www.eaton.com
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16.4
Tr a n s f er Switches
Magnum-Based Designs
Paralleling Test Mode
(Import/Export)
Note: This operation is carried
out when the controller’s Breaker
Logic is changed to Parallel via
ATC-5000 Input 64 and the
Import/Export operation is
selected.
To perform a paralleling test
in Import/Export mode, first
place the Test Mode selector
switch in the “Mode 2”
position, followed by placing
the System Test switch in
“Test” position, followed by
placing the Auto/Test selector
switch in the “Test” position.
After an adjustable time
delay, the generator will start.
After the nominal voltage and
frequency are reached, the
generator bus will be
synchronized to the utility
across the Source 2
(emergency) breaker.
When the two sources are
synchronized, the Source 2
(emergency) breaker is
closed, and the generator
gradually assumes load up
to the “user-programmable
import (adjustable power
setting for power supplied
from the utility) or export
(adjustable power setting
for power supplied to the
utility) power level and then
continuously varies its power
output to maintain the
selected power flow.
Returning either the Auto/
Test selector switch to
“Auto” position or the
System Test selector switch
to “Off” position will cause
the generator to gradually
unload and then the Source 2
(emergency) breaker will
open. The generator set will
continue to run for a user-
adjustable time, allowing the
generator set to run unloaded
for cool down, after which
the engine will be shut down.
Upon completion, the system
will then be ready for
automatic operation.
Sequence Flow Chart—Soft Load ATS
Note

Or switch SYSTEM TEST selector switch to OFF.
AUTO/TEST
Loss of
Normal Source
Auto Test
Start Engine
Transfer Load
to Generator —
Open Transfer
Utility Returns
Transfer Load
to Utility —
Soft Transfer
Stop Engine
after Cool Down
End
TEST MODE
Start Engine
Transfer Load
to Generator —
Soft Transfer
Transfer Load
to Utility —
Soft Transfer
End
SYSTEM TEST
Test
Off
Run
Off Start Engine
Stop Engine
AUTO/TEST
TestAuto
햲
End
Engine Continues
to Run
Breaker Logic —
Interchange
(Soft Load/Unload)
Breaker Logic —
Interchange
(Soft Load/Unload)
Start Engine
Transfer Load
to Generator —
Open Transfer
Transfer Load
to Utility —
Open Transfer
Stop Engine
after Cool Down
End
Breaker Logic —
Open Transfer
Start Engine
Transfer Load
Generator —
Closed to Transfer
Breaker Logic —
Closed Transfer
Mode 1 Mode 2
OR
AUTO/TEST
TestAuto
햲
Load Stays on
Generator
Transfer Load
to Utility —
Closed Transfer
Stop Engine
after Cool Down
End
AUTO/TEST
TestAuto
햲
Load Stays
on Generator
Synchronize
Generator
to Utility
AUTO/TEST
TestAuto
햲
Load Stays
on Generator
Synchronize
Generator
to Utility
Synchronize
Generator
to Utility
Synchronize
Generator
to Utility
Stop Engine
after Cool Down