Measuring Resistance On Electric Motors; Battery Strap Measurements - AEMC 6255 User Manual

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8.2. Measuring Resistance on Electric Motors

For this test, Kelvin probes should be used (Figure 8-2). Make contact with each
segment on the motor commutator. Allow approximately two seconds for the
display to stabilize.

8.3. Battery Strap Measurements

Proper battery strap resistance measurements will help ensure proper voltage
output. The resistance on battery strap connections should be measured using
the Kelvin probes (see Figure 8-3). Measurements must be made with the
system power turned off.
The average resistance of all the intercell connections should be determined by
totaling the individual resistances and dividing by the number of connectors.
Each individual cell resistance should not exceed the average by more than 10%.
See the manufacturer's specifications for typical resistance values.
Micro-Ohmmeter Model 6255
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Figure 8-2
Figure 8-3
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