Megger BITE 3, Инструкция по эксплуатации

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AVTMBITE 3 Rev 8 April 2014
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Interpreting Test Results
Overview
The BITE 3 interfaces with Power DB; which allows you to download data from
the unit, update sites and string information as well as update firmware in the
BITE3. Power DB maintains data from all customers, regions, sites and strings
whereas the BITE 3 manages a “subset” of these data and information. The on-
board data analysis lists instantaneous results. The BITE 3 can also list percent
change from the previous test and percent variation from the baseline. Baseline
values can be manually entered into the BITE 3.
There are three modes to interpreting data: instantaneous, short-term and long-
term trending. Instantaneous data interpretation is used when no previous data
exist. In this mode, each cell is compared to the string average. The percent
deviation should be within some relative limits as seen in the chart. As batteries
age, the percent deviation will widen but in this mode, an outlier is the concern.
Viewing (Printing) Test Results on the LCD
When the testing has been completed, using the menu buttons, go to
"Analyze/Site/String/Test Date" to select the test to be reviewed.
The screen will show the status of all cells/jars and straps. Any result outside of
configured limits will be flagged. Results within the “pass” band will appear as
normal text. Results within the “warning” band will appear as underlined text.
Results in the “fail” band will appear as bold text.
Analyze
BITE 3 Battery Analysis Report
BATTERY_LAB SMALL STRING
Date: 2/28/2002 07:48 Temperature: 70.0F
Float Current: 0.000A Ripple Current: 0.000A
B/W/F/C: .131m Ω /15%//20%/3%
# Z m Ω %v %D %C DC V R m Ω Time
1 .137 4.6 1.9 2.250 07:50
2 .132 .8 -1.8 2.250 07:50
3 .136 3.8 1.2 2.260 07:51
4 .134 2.3 .-.3 2.240 07:51
5 .137 4.6 1.9 2.250 07:51
These data can be printed using the optional printer. The printed format will be
the same as that on the LCD. Connect the printer using the supplied RS-232