HT instruments MACROTEST G3 - Manual (Page 58)

MACROTESTG3 - COMBIG3
EN - 57
6.6. LEAKAGE: LEAKAGE CURRENT MEASUREMENT
Using an external clamp, this function allows measuring the leakage current (by means of
the optional accessory HT96U).
Fig. 24: Indirect measurement of leakage current in three-phase systems
Fig. 25: Direct measurement of leakage current in three-phase systems
1.
Touch the icon. The screen to the side appears on
the display.
Touch the icon in the lower left corner to set the full
scale of the clamp used. The following screen appears
on the display:
2.
Touch the icon to zero the value in the In field and
use the virtual keyboard to set the full-scale value of the
clamp used ((values of 1A, 100A, 1000A for the HT96U
clamp).
Confirm the choice by going back to the previous
screen. With FS = 1A, the instrument automatically
carries out the measurement in mA.
3. Insert the external clamp into instrument input In1.
4. For indirect measurements of leakage current, connect the external clamp according to
Fig. 24. For direct measurements of leakage current, connect the clamp according to
Fig. 25 and disconnect possible additional earth connections that could influence the test
results.