Capstone Turbine Corporation
Model C65 Hybrid UPS User’s Manual
Page
28 of 66
400027 Rev A (July 2010)
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incurring any obligation either with respect to equipment previously sold or in the process of construction.
The Hybrid UPS systems will then remain in the desired mode until commanded
otherwise, or until a loss of utility voltage forces the system into Emergency Mode. Note
that the UPS Controller will typically be integrated with a building management system or
other external control system for automatically switching between modes and adjusting
power demand levels. If utility power is lost, forcing the Hybrid UPS systems into
Emergency Mode, the commanded mode will be retained in memory and the system will
attempt to return to that mode when utility power is restored.
Taking a Hybrid UPS Unit out of Service
CAUTION
Taking a unit out of service will reduce the capability of the entire Hybrid
UPS system which may cause an overload condition that results in loss
of all power to the critical loads. Make sure there is sufficient capacity
from the remaining Hybrid UPS units to supply the critical load before
taking a unit out of service.
A single Hybrid UPS system can be isolated from the rest of the MultiPac for maintenance
or for any other reason. This can be done in several ways:
•
UPS Controller Touch Screen Display – If the touch screen display panel is dark,
touch it anywhere to activate it. When the screen becomes active, enter the
Maintenance screen using password, and press the MultiPac Disable button for the
desired Hybrid UPS unit.
•
UPS Controller BMS Interface – the UPS Controller is able to communicate with a
building management system or other external control equipment, and receive a
remote command to disable a Hybrid UPS unit. Refer to specific instructions
provided by the building management system integrator.
Operating an Individual Hybrid UPS System
CAUTION
Operating an individual Hybrid UPS unit in parallel with the outputs of
other Hybrid UPS systems in a MultiPac will result in load fault
conditions that may automatically shut down some or all Hybrid UPS
systems and drop the critical load. Securely isolate the output of an
individual Hybrid UPS unit before attempting to operate it.
An individual Hybrid UPS unit can be operated independently of the rest of a MultiPac for
service reasons. However care must be taken to avoid impacting proper operating of the
remaining MultiPac system. This requires that temporary control connections be made at
the Grid Interlock and Stand Alone Interlock terminals in the JUCB, and should only be
done by an Authorized Service Provider. Since output of the individual Hybrid UPS unit will
no longer be synchronized with the rest of the Hybrid UPS system MultiPac, its load output
connections must also be isolated from the rest of the Hybrid UPS systems’ outputs.
NOTE
Operating an individual Hybrid UPS unit that is not enabled as part of the
MultiPac should only be done with the assistance of a Capstone
Authorized Service Provider.
