Capstone Turbine Corporation
Model C65 Hybrid UPS User’s Manual
400027 Rev A (July 2010)
Page
49 of 66
Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without
incurring any obligation either with respect to equipment previously sold or in the process of construction.
Under Voltage Submenu
Load Output 3/4
Under Voltage 2/8
352 Vrms
10.00 Sec
Under Voltage submenu shows the line-to-line voltage and associated delay time. If the
RMS voltage between any phases falls below this setting, the delay timer is started. If the
voltage has not recovered at the end of this delay time, the system will shut down. Voltage
is adjustable from 0 up to nominal. Initial Factory Setting is 352 volts.
The Under Voltage Delay establishes the time period allowed for any phase voltage to fall
below the Under Voltage limit. The delay is adjustable from 0.01 up to 10 seconds in 0.01
second increments. Initial Factory Setting is 10 seconds.
Over Voltage Submenu
Load Output 3/4
Over Voltage 3/8
528 Vrms
10.00 Sec
Over Voltage submenu shows the line-to-line voltage and associated delay time.
If the RMS voltage between any phases rises above this setting the delay timer is started.
If the voltage has not subsided by the end of this time span, the system will shut down.
Voltage is adjustable from 528 down to nominal in 1 volt increments. Initial Factory Setting
is 528 Volts.
Over Voltage Delay establishes the time span allowed for any phase voltage to rise above
the Over Voltage limit. The delay is adjustable from 0.01 to 10 seconds in 0.01 second
increments. Initial Factory Setting is 10 seconds.
Frequency Submenu
Load Output 3/4
Frequency 4/8
60.0 Hz
Frequency submenu establishes the nominal output frequency. This is adjustable from 45
to 65 in 1-Hz increments. Initial Factory Setting is 60 Hz. When operating in UPS Mode or
High Efficiency Mode, output frequency will automatically be adjusted to maintain
synchronism with input power from the Utility grid. This frequency setting, therefore, only
takes precedence when the system is operating in Emergency Mode.
The UPS Controller will set this frequency for all Hybrid UPS systems operating in a
MultiPac, and the user cannot change this value from this Display Panel when the system
is MultiPac enabled. Note that to change this value from the Display Panel, the Hybrid
UPS system must be MultiPac disabled and the user must be logged in with the current
password.
