Amprobe DMIII-Multitest Power-Quality-Recorder - Manual (Page 15)

AMPROBE
DMIII MULTITEST
EN-13
6. SAFETY TEST FUNCTIONS
6.1. LOW

: CONTINUITY TEST WITH 200mA TEST CURRENT
The measurement is taken according to EN 61557-2 and VDE 0413 part 4.
WARNING
Before carrying out the continuity test be sure that there is no voltage at the ends
of the conductor under test.
Turn the rotary knob to the LOW

position.
This key allows the operator to select one of the following measuring modes:
 AUTO mode (the instrument carries out two measurements with reversed
polarity and displays their average value). This mode is recommended
for the continuity test.
 RT+ mode (measurement with positive polarity and the ability to set the
duration time of the test). In this case the operator can set a measuring
time long enough to permit them to move the protective conductors while
the instrument is carrying out the test so as to detect any bad
connections.
 RT- mode (measurement with negative polarity and the ability to set the
duration time of the test). In this case the operator can set a measuring
time long enough to permit him to move the protective conductors while
the instrument is carrying out the test so as to detect any bad connection.
This key permits the operator to perform a calibration (compensation for the
resistance of the cables used for the measurement).
N.B. If the resistance is lower than 5

(including the resistance of the calibration) the
continuity test is executed by the instrument with a test current higher than 200mA.
If the resistance is higher than 5

the continuity test is executed by the instrument
with a current lower than 200mA.
We recommend that you check the calibration of the test leads before executing a
measurement according to next paragraph.