The Ls function must be used to measure the series capacitance of a battery. Instrument set up is the
same as for Rs measurements (Figure 2-14). A negative reading will be shown, and the following
equation must be used to convert the “-Ls” reading to “+Cs” values:
Where: f = frequency in hertz
Cs = series capacitance in farads
Ls = series inductance in henrys
Care must be taken so the measurement current level of the 252’s internal source does not exceed
the rating of the battery being tested. See Table 1-1 for range test currents.
2.3.10 Component Sorting
Model 252, when used with Tegam, Inc. Model 1412B Limits Comparator, sorts components according
to percent deviation and dissipation factor, simultaneously. Component sorting can be manual or
automatic; Model 1412B provides four contact closures for operating automatic component
handling equipment.
2-28
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