Specifications

February 2007
CA08101001E For more information visit: www.eaton.com
16-61
Transfer Switches
16
Transfer Switch Equipment
Magnum Closed Transition Soft Load Transfer Switch with ATC 5000 Controller
Magnum Closed Transition Soft Load Transfer Switches with ATC 5000 Controller (Continued)
Figure 16-22. Sequence Flow Chart — Soft Load ATS with Extended Paralleling Capabilities

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
Stop Engine
after Cool Down
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
Close the
Generator Breaker
and Soft Load
the Generator
Soft Unload the
Generator and
Open the Source 2
(Emergency)
Breaker
Stop Engine
after Cool Down
End
Breaker Logic
— Parallel
(Baseload)
Start Engine
Breaker Logic
— Parallel
(Import/Export)
Mode 1 Mode 2
OR
AUTO/TEST
TestAuto
햲
Maintain Baseload
Generator Power
Output
Stop Engine
after Cool Down
End
AUTO/TEST
TestAuto
햲
Maintain Import/
Export Generator
Power Output
Synchronize
Generator
to Utility
AUTO/TEST
TestAuto
햲
Load Stays
on Generator
Synchronize
Generator
to Utility
Synchronize
Generator
to Utility
Synchronize
Generator
to Utility
Close the Source 2
(Emergency)
Breaker and
Soft Load
the Generator
Soft Unload the
Generator and
Open the Source 2
(Emergency)
Breaker