MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
3.1 Checking the correctness of PE (protective earth) connections
When the meter is connected as in the drawing, touch the contact electrode and wait for
about 1 second. If voltage is detected on the PE conductor, the device:
will display text (installation error, the PE conductor connected to the phase conduc-
tor) and
will generate a continuous audio signal
This option is available for all measuring functions that apply to residual current devices (RCD) and
fault loop except Z
L-N
measurement.
WARNING
When phase voltage is detected on PE lead, measurements must be immediate-
ly stopped and a fault in the installation must be removed.
Make sure to stand on non-insulated ground when measuring. Insulated ground
may cause an incorrect test result.
If the voltage on the PE conductor exceeds the acceptable limit value (ap-
prox. 50 V), the meter will signal the fact.
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