Atec Megger-MBITE - Manual (Page 3)

MBITE
Miniature Battery Impedance Test Equipment
flooded). A sample curve is shown in Figure 4. In order
to facilitate the long-term interpretation of impedance
values, Megger maintains a database of impedance values
of many battery types. For comparison purposes, this
information is available upon request.
An additional data evaluation method that can be used in
either a short-term or a long-term mode is in conjunction
with load test data. By taking impedance measurements
just prior to a load test and comparing them with end
voltage, a correlation between impedance and that string’s
capacity can be derived. See Figure 6.
FEATURES AND BENEFITS
■ Provides excellent data to evaluate critical systems’
back-up time
■ On-line testing requires no downtime
■ Graphical printout aids to quickly determine cell/jar
condition to make immediate decisions
■ Data is stored for on-site review
■ Requires no battery discharge to save cycle life
■ Built-in printer to leave a record at the site
■ RS-232 connector for downloading stored data to PC
■ Reduced testing time; less than 30 seconds per cell
■ Measures impedance and dc cell voltage for lead-acid
and nickel-cadmium cells
■ Directly measures intercell connection resistance to
eliminate routine retorquing
■ Up to 1000 sets of readings can be stored in an
unlimited number of tests
■ Custom Lead Sets available to meet specific needs
SPECIFICATIONS
Maximum Total Voltage at MBITE Leads
250 V dc. Larger battery systems can be sectioned
Power Requirements
120 V ac 60 Hz (240 V ac 50 Hz on –47 and –47-CE models)
Display
Backlit LCD panel with 5-in. (125 mm) viewing area
Voltage Range
0 to 2.500 V dc, 1 mV resolution
2.5 to 25.00 V dc, 10 mV resolution
Impedance Range
0 to 1.000 mΩ 1 µΩ resolution
1 to 10.00 mΩ 10 µΩ resolution
Measurement Accuracy
AC impedance: ±(5% rdng + 1 lsd)
DC voltage: ±(1% rdng + 1 lsd)
Settling Time per Reading
3 seconds maximum
Temperature
Operating: 32° F to 104° F (0° C to 40° C)
Storage: -5° F to 130° F (-20° C to 55° C)
Humidity: 20% to 90% RH, non-condensing
Clamp Range
Standard Opening: 2.0 in. (50 mm) maximum
Optional Opening: 0.5 in. (12 mm) maximum
Safety
Designed to meet IEC 1010-1 specifications
Dimensions: 7H x 11D x 17W in. (18 H x 29 D x 45 W cm)
Weight: 19.5 lbs. (8.8 kg)
Item (Qty) Cat. No.
MBITE, 110/60 246005B
MBITE, 240/50 246005B-47
MBITE, 240/50, CE-marked 246005B-47-CE
Included Accessories
Potential Probe set 33530
Potential Probe cable (8 ft.) 33806
Fused Current Source Leads (8 ft.) 33805
Clamp-on current sensor, CT, with 1⁄2 in. opening (5 ft.) 33863
Extension cable, CT (6 ft.) 33864-1
AVOLink, downloading software Instruction manual AVTM246005B
Optional Accessories
Potential Probe extension cable (8 ft.) 33806
Extension cable, CT (20 ft.) 246033
Clamp-on current sensor, CT, with 1⁄2 in. opening 246034
Factory Probes, dual-point helical hand spikes 33532
Factory Probes, AMP/Burndy Lead Set 33531
Bar Code wand with preprinted, laminated code sheet 246036
Bar Code Label printing software 246039
ORDERING INFORMATION