Martindale ET4000 / ET4500 Measurements
52
I
SC
is calculated as described in chapter 5.6.1 Line impedance and prospective
short circuit current.
If the measured voltage is outside the ranges described in the table above the
ΔU result will not be calculated.
Large fluctuations of mains voltage can influence the measurement results (the
noise sign is displayed in the message field). In this case it is recommended
that the measurements are repeated a few times to check if the readings are
stable.
The specified accuracy of the tested parameters is valid only if the mains voltage
is stable during the measurement.
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