M
AVTM246004 BITE 2/2P Rev 4 July 2011
4
BITE 2/2P Measurements
Impedance readings are calibrated to 5 percent of reading over
the specified temperature range. For ac impedance, the
receiver
screen presents data as ranges: 1.000, 10.00, and
100.0 m
Ω
. The maximum measurement is 200 m
Ω
.
Impedance precision (reproducibility) is 0.5%, and voltage
precision is 0.5%.
Test numbers start with number one (001) and increment
after each successful cell and strap reading. The operator
initiates data acquisition by pulling a trigger on the
receiver
.
The measurement range for dc voltage is from 1 to 25 V dc
with an accuracy of 1 percent of reading.
Intercell (strap) and intertier connection measurements are
made directly after the internal cell impedance measurement
when STRAP is displayed on the LCD of the
receiver
. This
feature provides resistance measurements in the same ranges
as the cell/module impedance.
Total current is monitored with each impedance measurement
to compute both cell and strap impedance and intercell (strap)
resistance. The operator selects filtering in a menu in the
receiver
as either 50 Hz or 60 Hz depending on the line
voltage.
A low current cutoff alarm is maintained at 3 A, and the
maximum current allowed is 15 A. The LCD displays
"Hi_A" to warn of an ac current over-range and "Lo_A" for
current below 3 A.
Upon Receipt of the BITE 2/2P
Check the equipment received against the packing list to
ensure that all materials are present. Notify Megger of any
shortage (tel: 610-676-8500).
The
BITE 2
instrument is shown in Figure 1-1. The BITE 2
includes the following components and accessories:
•
transmitter
with built-in
receiver
battery charger
•
receiver
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