Eaton XLR-16 User Manual
XLR-16 Module Instruction Manual
XLR-16 Instruc tion manual
Contents
INTRODUCTION .........................................................3
SAFETY ..................................................................3
THEORY OF OPERATION ..................................................3
INSTALLATION ...........................................................4
OPERATION .............................................................6
OVERVOLTAGE SIGNAL ...................................................6
TEMPERATURE MONITORING ............................................7
MAINTENANCE ..........................................................8
STORAGE ...............................................................8
DISPOSAL ...............................................................8
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XLR-16 MODULE INSTRUCTION MANUAL Technical note 10988 August 2019 www.eaton.com/supercapacitors
XLR-16 Instruc tion manual
Introduction
The XLR modules are self-contained energy storage
device comprised of six individual supercapacitor cells.
The module includes bus bar connections, integrated cell
voltage management circuitry, an overvoltage alarm and
a thermistor for measuring internal temperature of the
cells. Units may be connected in series to obtain higher
operating voltage (maximum 750 V from ground), in parallel
to provide higher current, high power or longer run time, or
a combination of series/parallel arrangements, as needed.
The module is designed to withstand rugged operating
environments with high vibrations and liquid present.
The module is designed to provide pulse power with
frequent discharges in vehicles, transportation, heavy
equipment or grid applications. The module can be cooled
with forced air when frequent, high current charges or
discharges occur.
The cell voltage management system provides the highest
reliability for optimizing product lifetime by providing cell
voltage balancing and a cell overvoltage alarm.
Safety
The XLR-16 module contains stored energy of 18 watt-hours
and can discharge up to 9700 amps if short circuited. Only
personnel trained in high power electrical systems should
work on such systems. Modules are typically connected
in series to increase the operating voltage and potential
discharge current. Before working on a system with
modules installed, the module(s) should be discharged and
the voltage on each module verified prior to conducting any
work.
WARNING
Danger High Voltage Hazard
Theory of operation
Supercapacitors function on electrostatic principles with
no chemical reactions and no moving parts. They avoid
the lifetime issues associated with chemical storage of
batteries or mechanical issues associated with fly wheels.
The XLR modules are non-toxic and designed for years of
maintenance-free operation.
Supercapacitors are intended as energy storage with a DC
discharge. The module should not be used for AC charging
or discharging. Discharges may be constant current or
constant power. Example discharges are shown in Figure
1a and 1b. The voltage of the module drops linearly under a
constant current discharge.
Figure 1a. Example voltage and current discharge curve for 7.5 kW
discharge from one module with 16 V float voltage
Never touch the power terminals as the module may be
charged and cause fatal electrical shocks. Always check
that the module is fully discharged before manipulating the
module.
For more information about the discharge procedure, please
refer to page 8.
•
Do not operate the XLR-16 above 16.2 V.
•
Do not operate unit above specified temperature rating.
•
Do not touch terminals with conductors while charged.
Serious burns, shock, or material fusing may occur.
•
Protect surrounding electrical components from incidental
contact.
•
Provide sufficient electrical isolation when working above
50 Vdc.
•
Prior to installation or removal from the equipment, it is
mandatory to fully discharge the module.
XLR-16 MODULE INSTRUCTION MANUAL Technical note 10988 August 2019 www.eaton.com/supercapacitors
Figure 1b. Example voltage and current discharge curve for 250 A
discharge from one module with 16 V float voltage
Due to the very low equivalent series resistance (ESR)
of the supercapacitors, minimal heat is generated during
operation. However, as supercapacitors can handle very
high currents, a significant heat rise can occur if the
discharges and re-charging is frequent and above 125 A
continuous current.
RMS
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