Megger BITE 3, Инструкция по эксплуатации

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M
AVTMBITE 3 Rev 8 April 2014
20
Reviewing a Test
To review the readings, simply scroll up/down the screen. To return to testing,
scroll to the last readings and start taking measurements.
Retesting a Cell/Jar or a Strap
To retest a cell/jar or a strap, simply scroll to that cell/jar or strap and press the
right side of the cursor control pad. Retest the cell/jar or strap. To return to the
normal test mode, press the left side of the cursor control pad and scroll to the
last cell/jar or strap and continue testing.
Analyzing a Test (See Chapter 5)
Testing Noisy Battery Systems
The BITE 3 can be used to test noisy battery systems accurately. Set the
(optional) CT for “impedance” mode. The BITE 3 will automatically use the
noise in the battery system to take the impedance measurements. It works by
using the system noise that causes a voltage drop in the battery. It simultaneously
measures the system noise current in the battery that is causing the voltage drop.
Impedance is then calculated as it normally is.
The procedure for testing noisy systems is simple. If a noisy system is
encountered, the BITE 3 will display on the LCD a message, “Noise Detected”.
This message indicates that better results may be obtained by using the optional
CT in “Impedance” mode. Configure the CT mode in the BITE 3 for
Impedance mode. Connect the CT to the BITE 3 and to any place within the
string being tested. Then take the normal battery measurements as in Step Three
above. The BITE 3 will now use the system noise in the battery instead of
applying its own signal. It merely measures the voltage drop caused by the system
noise while simultaneously measuring that current with the CT. Impedance is
calculated accurately using the two measured parameters, voltage drop and
current.
Tests Using Optional Lead Sets
1. Do Steps One and Two above.
2. Enter temperature &

.
3. Connect the lead set to the battery.
4. Depending upon the lead set, measure the float and ripple currents as in Step
Three above, part 2 and pressing the red “test" start button.