Sonel MPI-506 - Page 30

MPI-506 – USER MANUAL
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 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
Defective RCD.
RCD in good working order.
Switch on the RCD.
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.