Sonel MPI-540 - Page 83

MPI-540 – USER MANUAL
81
Additional information displayed by the meter
Measurement in progress.
U
B
>U
L
!
The touch voltage exceeds a preset U
L
threshold value.
No U
L-N
!
Lack of neutral lead that is necessary for I
Δ
n constant and
pulsed with direct current offset
The meter is ready for measurement.
U
L-N
voltage is incorrect for making a measurement.
U
L-PE
voltage is incorrect for making a measurement.
U
N-PE
voltage is incorrect for making a measurement.
Phase connected to N terminal instead of L terminal (for
example, exchange of L and N in the mains socket).
Maximum temperature of the meter is exceeded.
Network frequency is outside the range of 45...65 Hz.
PE conductor connected incorrectly.
Measurement error.
Before measurement, voltage at test terminals exceeds
500 V.
Voltage exceeded.