Internal Resistance Measurement
The electronic load is able to measure the internal DC resistance of the connected DUT.
The determination of the internal resistance is done in the way specified in several standards for batteries and accumulators, e.g. DIN EN 61951, DIN EN 61960:
At two definable points in time (t1, t2) the load measures the DUT’s terminal voltage (V1, V2), each at an associated load level (I1, I2) (see sketch in the title picture).