Sonel MPI-520 - Measurement of RCD Disconnection Time

MPI-520 OPERATING MANUAL version 3.4
25
Remark:
- Measurement of t
AI
disconnection time for selective RCD is not available.
Additional information displayed by the meter
U
B
>U
L
!
The touch voltage exceeds a preset U
L
threshold value.
!
! placed on the right side of the result means that RCD is
out of order
No U
L-N
!
Lack of neutral lead that is necessary for I
Δn
constant and
pulsed with direct current offset
The remaining information is the same as for fault loop measurement (first 7 positions under point
3.4.1).
3.6.2 Measurement of RCD disconnection time
Set the rotary switch of function selection at t
A
position.
Press F1
I
n
push-button
and move to selection of I
n
.
Press F2
xI
n
push-button
and move to selection of I
n
.
multiplication factor
Press F3 push-button
and move to selection of cur-
rent waveform.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Move to selection of a second group of parameters by
means of and push-buttons.