Anomalous Cases Which May Occur During Mω Tests - HT MULTITEST M72 User Manual

The message "Measuring" on the display means that the instrument is
measuring or discharging eventual capacitors. During this phase never
disconnect nor touch test leads.
9. At the end of the test, before giving the result of the measurement, the instrument
automatically discharge eventual capacitors and parasite capacitances present among the
conductors involved in the measurement
10. At the end of the test, if the resistance
value is higher than 0.5MΩ (or 0.25MΩ
for 250V), the instrument emits a double
sound to signal the positive outcome of
the test. A screen similar to this is
displayed
11. At the end of the test, if the resistance
value is higher than 999MΩ, so higher
than the full scale, the instrument emits
a double sound to signal the positive
outcome of the test. A screen similar to
this is displayed. Note! An insulation
value higher than 999MΩ is an excellent
insulation value, generally much higher
than the
prescribed by Standards
12. At the end of the test, if the resistance
value is lower than 0.5MΩ (or 0.25MΩ
for 250V) the instrument emits a
prolonged sound to signal the negative
outcome of the test. A screen similar to
this is displayed
4.9.1. Anomalous cases which may occur during MΩ tests
If, during measurement, the voltage
present at terminals is higher than 10V
the instrument does not perform the test
and emits a prolonged sound to signal
the anomalous situation. The screen
beside is displayed for 5 seconds after
which the instrument displays the default
screen related to the MΩ test
minimum requirements
MULTITEST M72 - M73 - M74 - M75
CAUTION
EN - 29
Resistance value
Test voltage value
Resistance value
Test voltage value
Resistance value
Test voltage value
Input voltage value