DSE Model 7560 ATS and Mains Controller Operators Manual
34 057-017 7560 OPERATING MANUAL ISSUE 10.2 10/02/09 AM
6.2.2 CLOSING THE BUS BREAKER
MAINS FAILED
As the mains supply has failed, there is no requirement
for synchronising. However, the 7560 will check to
ensure that the load bus is ‘dead’ before closing the
generator bus breaker onto the load.
This check is made using the internal ‘dead bus relay’
and the functionality of the Multiset Communications Link
(MSC).
Status
Continuous paralleling
Auto mode
Should the mains supply return, the module will first
initiate a return timer to ensure that it is safe to stop the
generators.
The 7560 will display:
Status
Return delay
00:05
Auto mode
NOTE: - Should the mains fail within this time, the module will continue to run the generators on
load and ignore the fluctuating “call to stop” until such a time as it remains inactive for the duration of
the stop delay timer.
MAINS AVAILABLE
If the mains supply is available when the sets are called to take load, the generator bus must first
be synchronised with the mains supply. This will occur if:
•
The sets are started by remote start (if configured).
•
The sets are started due to high mains load (if configured to start upon this event)
Once the Minimum number of sets (set using 75xx
software) have synchronised onto the bus, the 7560 will
display:
Status
Synchronise to bus
Auto mode
Once the bus has synchronised to the mains, the bus
load switching device will be closed and power will be
ramped onto the bus (generators). The 7560 will display:
Status
Ramp onto bus
10% kW 12% kVAr
Auto mode
Once the bus power / mains power level has been
reached (configured using 75xx software) the 7560 will
display:
Status
Continuous paralleling
Auto mode
