Leakage - Measuring Leakage Current; Leakage Current Measurement; V% - Voltage Drop On Main Lines - T.I.S. INSTRUMENTS MFT-PRO Quick Reference Manual

4.7. LEAKAGE – MEASURING LEAKAGE CURRENT
Access the general menu by pressing the HOME key
shows the following screen:
4.7.1.

Leakage current measurement

1. Select the desired full scale (typically 1A) by pressing key F1 or touching the relevant icon.
2. Connect the optional clamp HT96U to input In1 as shown in the following figures:
Measuring indirect leakage in single-phase case
Measuring direct leakage in single-phase case
3. Measurement is carried out in real time and the measuring result is shown constantly updated.
4. Press the SAVE key or touch the relevant icon
display. Confirm saving by pressing the SAVE key again, or the relevant icon.
4.8. ΔV% – VOLTAGE DROP ON MAIN LINES
This feature allows to evaluating the percentage value of voltage drop between two points of a main line in
which a protection device is installed and comparing this value to possible limit value specified by guidelines.
For any details on measurement please refer to the user manual of the instrument
and select function
Measuring indirect leakage in three-phase case
Measuring direct leakage in three-phase case
to save the result of measurement shown on the
EN – 13
MFT-PRO
Quick reference guide
. The instrument