Capstone Turbine Corporation
Model C65 Hybrid UPS User’s Manual
400027 Rev A (July 2010)
Page
47 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.
Fast Over Voltage Submenu
Utility Input 2/4
FastOver Vlts 4/7
576 Vrms
0.16 Sec
Fast Over Voltage submenu shows the line-to-line voltage and associated delay time. The
system will cease power import from or export to the grid within 1 msec if any phase RMS
voltage exceeds the Fast Over Volts setting for the set time delay. If the grid voltage re-
stabilizes within 1 second of the initial over voltage, then the system will resume its grid
power connection; otherwise, the system will enter Emergency Mode. The Fast Over
Voltage at which this sequence will be triggered is adjustable here from the Over Voltage
up to 634 volts. The delay time is adjustable from .03 to 1.00 second in .01 second
increments. Initial Factory Settings are 576 V line-to-line and .16 second delay.
Under Frequency Submenu
Utility Input 2/4
Under Frequency 5/7
59.3 Hz
0.16 Sec
Under Frequency submenu shows the system under frequency and associated delay time.
If the grid frequency falls below this under frequency setpoint for the set delay time, the
system will enter Emergency Mode. The frequency is adjustable from 45 Hz up to the
Over Frequency setting, in 0.1 Hz increments. Initial Factory Setting is 59.3 Hz.
The Under Frequency Delay is the number of seconds allowed for the Under Frequency
condition before the system enters Emergency Mode. This is adjustable from 0.01 to 10
seconds in 0.01 second increments. Initial Factory Setting is .16 second.
Over Frequency Submenu
Utility Input 2/4
Over Frequency 6/7
60.5 Hz
0.16 Sec
Over Frequency submenu shows the system over frequency and associated delay time. If
the grid frequency exceeds this over frequency setpoint for the set delay time, the system
will enter Emergency Mode. The frequency is adjustable from the Under Frequency setting
to 65, in 0.1 Hz increments. Initial Factory Setting is 60.5 Hz.
The Over Frequency Delay is the number of seconds allowed for the Over Frequency
condition before the system shuts down. This is adjustable from 0 to 10 in 0.01 second
increments. Initial Factory Setting is 0.16 second.
