MPI-525
– USER MANUAL
25
Remarks:
- Measurement of t
AI
trip time for selective RCD is not available.
Additional information displayed by the meter
U
B
>U
L
!
Touch voltage U
B
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).
3.5.2 Measurement of RCD trip 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.
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