| Megger / Biddle BITE 2P Battery Impedance Test Equipment
The Biddle BITE 2P (246004) Battery
Impedance Test Equipment determines
the condition of lead-acid and
nickel-cadmium cells up to 7000 Ah.
An advanced feature set has been developed
that includes Pass/Warning/ Fail
calculations based on a user entered baseline
value, advanced printing
functions and more. The case of
the Megger BITE 2P consists of both the transmitter
and a carrying case for all of
the standard accessories and some of
the optional accessories, in an all-in-one
unit.
The instrument works by applying a test
current across the battery string while
on-line, then measuring the total current
(ac ripple + test current) and the
voltage drop of each cell/jar. It then
calculates the impedance. It also
measures dc voltage and interconnection (strap)
resistance to help determine
the overall condition of the entire
battery string's electrical path from
terminal plate to terminal plate.
Applications:
A battery's internal impedance increases
with decreasing capacity due to various conditions such as age, ambient
temperature, discharge history, etc. Tthe BITE 2P measure impedance values
and dc voltage for lead-acid and nickelcadmium cells up to 7000 Ah
capacity. Impedance finds electrical path problems due to plate sulphation,
post-seal corrosion, dry-out, and poor intracell and intercell
connections. This information lets the operator determine maintenance
needs such as:
Cell replacement criteria based on
impedance trends.
-
Jumpering out a cell or two.
-
Clean and/or retorque intercell
connectors.
-
Shorten the maintenance interval, etc.
Typical installations that can be tested
using the AVO BITE 2P include:
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Electrical power generation plants.
-
Substations: utility, railroad,
industrial.
-
Telecommunications facilities: CO,
Wireline, Wireless, MTSO.
-
UPS systems.
-
Railroad: Signals and Communications,
substation
-
Aircraft power supplies.
-
Marine, military
-
and many other applications
Features:
-
On-line testing requiring no downtime.
-
Enhanced printing and memory functions.
-
Calculates impedance automatically and
stores results for on-site review.
-
Requires no battery discharge.
-
Receiver has an RS-232 connector for
downloading stored data to a personal computer.
-
Reduced test time: less than 30 seconds
for each cell.
-
Measures impedance and dc voltage
values for all lead-acid and nickel-cadmium cells up to 7000 Ah.
-
Stores more than 2000 sets of readings
in up to 300 tests.
Specifications:
Application
The BITE 2P test lead-acid and nickel-cadmium cells up to 7000
Ah.
Maximum Total Voltage at Current Source Leads
275 V dc (larger battery systems can be sectioned to accommodate this specification)
Transmitter
Supply Voltage
100 to 130 V, 50/60 Hz, 200 VA max
210 to 250 V, 50/60 Hz, 200 VA max
Source Output Current
10 A nominal, 50/60 Hz operation
Maximum Battery String Test Voltage
275 V dc at source lead terminals
(section the battery if >275 Vdc)
Display
Digital LCD meter, 0 to 15 A
BITE 2P Printer
Built-in thermal, with 4.25 in. (110
mm) printing width
Receiver
Accuracy
ac impedance ±(0.3% of rdg +1 LSD)
dc voltage ±(0.5% of rdg +1 LSD)
Precision
better than 0.5% one sigma
Voltage Range and Resolution
1 to 2.500 V dc, 1 mV resolution
2.5 to 25.00 V dc, 10 mV resolution
Impedance Range and Resolution
0 to 1.000 mW, 1mW resolution
1 to 10.00 mW, 10mW resolution
10 to 100.0 mW, 0.1mW resolution
Setting Time per Reading
3 seconds maximum
Supply
4.8 V dc, 800 mAh, quick charge nickel-cadmium battery pack
Battery Pack Life, Full Charge
5 hours continuous
Maximum Cell/Jar Test Voltage 25 V dc
between receiver and potential probe
Display
LCD, 2 x 16 characters |
