HT FULLTEST3, User Manual, Page: 30 / 100

FULLTEST3
EN - 28
6.1.1. Test leads calibration
In order to avoid that the test leads do not influence the test results, the resistance of
the leads must be calibrated (zeroed) before take measurement.
CAUTION
x
The calibration must be done separately for each test current
(200mA & 25A)
x
The calibration must be repeated when test leads are changed
(replaced, shortened or extended)
x
Max resistance that can be calibrated is 5
:
x
Existing calibration can be annulled if test leads are opened
when calibration is carried out
x
Calibration is not needed in R
PE-4WIRE
function
3. Press the CAL touch-screen key (8), the message “SHORTCIRCUIT TEST
LEADS AND PRESS START TO CALIBRATE” will appear
4. Connect test leads according to the figure below, make sure two crocodiles are
connected as close as possible to each other to a piece of unisolated wire (see
Fig. 26)
Fig. 26 : Test leads calibration
5. Press the START button. The measurement will be done and value without
calibration will be displayed for a moment, then the value will be set to zero (0.00).
Test leads are thus calibrated, measurements can follow
6. The following specific information may be shown on the display during calibration
Message Description
SHORTCIRCUIT TEST
LEADS AND PRESS
START TO CALIBRATE
Calibration has been started ( CAL touch-screen
key has been pressed).
Shortcircuit test leads and press the START
button!
OPEN TEST LEADS,
CALIBRATION ANNULED
Test leads are opened after pressing the
START button.
Press YES key … existing calibration will be
annulled! Press NO key … existing calibration
will stay untouched!
RPE > 5
:
CALIBRATION FAILED
Connected resistance is higher than 5
:
and
lower than measurement range, calibration can
not be carried out. Existing calibration will stay
untouched.
Reduce external resistance and
repeat the calibration!