MPI-506 – USER MANUAL
Number of measured parameters depends on settings in the main menu.
U
B
and R
E
are measured always.
If during the U
B
/R
E
measurement, the RCD has tripped at 0.5 I
n
,
or has not tripped
in the remaining cases, or the preset safe voltage value U
L
has been exceeded –
the measurement is discontinued.
The measurements which are not possible are automatically skipped, for example
when the selected current I
Δn
and multiplication factor are beyond the meter’s
measuring capabilities.
Additional information displayed by the meter
RCD in good working order.
Meter ready for measurement
Voltage on the meter L and N terminals is out of range for
which the measurement can be made.
The L and N conductors are switched (voltage between the
PE and N conductors).
Temperature inside the meter has exceeded the allowed
limit. The measurement is blocked.
RCD did not trip or tripped too late.
After the U
B
R
E
measurement, the t
A
measurement was
not performed because the R
E
and voltage values did not
allow generating the required current value.
Incorrect or unstable power grid frequency.
Measurement error – loss of voltage after the measure-
ment or RCD tripped during the U
B
or R
E
measurement.
Safe touch voltage is exceeded.