Sonel MPI-520 - Measurement of Short Circuit Loop Parameters in L-PE Circuit

MPI-520 – USER MANUAL
16
Additional information displayed by the meter
READY!
The meter is ready for measurement.
L-N!
U
L-N
voltage is incorrect for making a measurement.
L-PE!
U
L-PE
voltage is incorrect for making a measurement.
N-PE!
U
N-PE
voltage exceeds allowable value of 50V.
Phase connected to N terminal instead of L terminal (for ex-
ample, exchange of L and N in the mains socket.
Temperature exceeded.
f!
Network frequency is outside the range of 45...65 Hz.
Error during meas-
ure
A correct result can not be displayed.
Loop circuit mal-
function!
The meter should be serviced.
No U
L-N
!
Lack of U
L-N
voltage before the principal measurement.
U>500 V! and con-
tinuous audio signal
Before measurement, voltage at test terminals exceeds 500
V.
3.4.2 Measurement of short circuit loop parameters in L-PE circuit
Set the rotary switch of function se-
lection at Z
L-PE
/U
L-PE
position.
Press F1 push-button if L lead
length needs to be selected.
Select a lead length by
means of and push-
buttons and press ENTER
push-button.
Connect test leads according to one of the drawings.
NL
or
PE