BATTERY
MONITORING - CELLWATCH
Why Battery Monitoring?
The battery is weakest link of any UPS or DC Power System because
they degrade in time. The traditional method for detection of weak
cells is testing the batteries during a preventative maintenance
visit with specialized test equipment. This is a good first step
to catching problems that could put your critical load at risk.
However, batteries have proven to fail between PM visits even when
scheduled quarterly leaving the end-user with a false sense of security.
The only solution is to continuously monitor and test your batteries
with a permanently installed system that runs 24 hours a day, 365
days a year.
With the Powerware CELLWATCH Monitoring System, current and temperatures
are being measured thousands of times a day. Voltages are measured
up to 24 times a day on each cell, that can mean up to 3/4 of a
million measurements. Internal Resistance on each cell is measured
every 12 or 24 hours, ensuring no event slips between the testing
cracks. No other system can measure your batteries' important parameters,
daily. Powerware CELLWATCH provides immediate warnings of deterioration
and imminent failure of batteries, identifies any individual battery
that exhibits problems, and reduces the possibility of damage to
the entire battery string.
Why CELLWATCH?
The best way to test a battery is to use it. But we don't expect
you to be in your battery room the day the power fails in your data
center. That's why CELLWATCH does the job for you. CELLWATCH will
automatically measure the performance of every cell on every battery
in the discharge and will determine automatically the best and worse
performing cells. You can later compare this information with other
cells on the system and make your own maintenance plans accordingly.
CELLWATCH can also reduce the frequency of your technician visits
thereby paying for itself. It would be cost prohibitive to carry
out those crucial battery tests once or twice a week. CELLWATCH
can scan all battery parameters more than once per day to ensure
nothing is missed. In addition, this monitoring system allows battery
replacement to be based on the battery’s condition, not simply
how long it’s been in use, helping to avoid premature and
unnecessary replacement.
CELLWATCH Componets
All information collected by Powerware CELLWATCH is gathered at
a battery monitoring unit (BMU), where it is analyzed on WindowsÂ-compatible
software. The battery monitoring unit is connected to a Control
Unit (CU) and Data Collection Modules (DCM) using fiber optic technology,
which increases sampling speed. Since fiber optic technology is
non-conducting, no electrical noise is gathered by the system, improving
the systemês reliability.¾ CELLWATCH offers the following features:
- Measures Voltage on each cell, either 6 or 24 times per
day. The software records data for graphical presentation
during THAT day as well as average data for historical analysis
or trending. Also compares this data continuously with high
and low alarm settings for alarm activation.
- Measures Internal Resistance on each cell, either 2 or
4 times per day. The software records data for graphical
presentation during THAT day as well as average data for
historical analysis or trending. Also compares this data
continuously with high and low alarm settings for alarm
activation.
- Measures the temperature of either the battery room ambient
or a 'pilot' cell. Records this figure for graphing as well
as comparison with high and low alarm setting for alarm
activation.
- Measures discharge current from a battery string and compares
the data with a discharge alarm limit set in software. In
the event of a discharge, rapidly records all cell voltage
data as the battery discharges for later identification
of weak cells under load.
- Supplied with dedicated computer running Windows 98/ME/2000/XP
software and CELLWATCH proprietary application for reporting,
recording and data analysis.
- The system is modular, so if your needs change, CELLWATCH
can be reconfigured or expanded.
- Low voltage DC components. Measurement components never
see greater than 48v nominal DC so battery connections are
all low voltage. Electrical isolation is achieved by plastic
fiber optic cable.
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| CELLWATCH
Software
CELLWATCH software is an application written to run on Windows
XP™ machines supplied as part of a CELLWATCH Battery
Monitoring System. It has been carefully designed to be be
both easy to use and intuitive, providing just the right amount
of information for users who are too busy to read overwhelming
reports.
Key features.
- Informative entry screen, showing all cells
on a battery or multiple batteries. "What you need
to know"
- Automatic battery testing under software
control.
- All alarm information readily visible on
entry screen.
- Capability to drill down into battery data,
easily from the entry screen via familiar Windows functions.
- Reports are all visual via graphing functions.
Reports available include:
- Today's Voltage & Ohmic Value cell data,
for any single cell.
- String data, showing the last reading for
the entire battery string.
- Cell history showing a minimum of 120 days
averaged data (if 120 days data is available) for that cell.
Other cells may be added for comparison.
- Battery history, showing history for a particular
year of service.
- Discharge data, graphing the discharge characteristics
of the entire battery under discharge following such an
event.
- Programmable alarm limits for Voltage, Ohmic
Value, Current, and Temperature.
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CELLWATCH BROCHURE
Watch
CELLWATCH Video (.EXE)
Click the screenshots below for
a larger view:
Click
here to see "live" web view
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