VR2250
Page 41 of 131
6.4.4. Measurement procedure and results of "P-PE" mode
1. Select
P-PE
mode by means of the
F1
key.
2. Connect the Red, Green and Black connectors of the three-terminal mains cable or
of the split cables to the corresponding input terminals of the instrument
B1
,
B3
,
B4
.
P
B2
B3
B4
B1
I1
Instrument connection for P-PE test in a 230V
single-phase System
B2
B3
B4
B1
I1
1
3
N
Instrument connection for P-PE in a 400V three-
phase system
B2
B3
B4
B1
I1
1
3
Instrument connection for P-PE in a 400V three-phase system without Neutral conductor
3. Connect the mains plug into a 230V 50Hz socket or the crocodiles to the
conductors of the three-phase system (see previous pictures).
4. The key
F4
permits to select one of the following
limit values for the contact
voltage
(which can be shown cyclically when pressing the key):
50V
(default).
25V.
5. Press the
START
key
once
to execute a test injecting a current in phase with
positive half wave of the voltage.
Press the
START
key
twice
to execute a test injecting a current in phase with
negative half wave of the voltage.
CAUTION
The P-PE measurement in a 230V System makes a test current of 6A approx.
This may cause the tripping of magnetic protection switch with nominal value
lower than 10A and
will cause the tripping of RCD device
. If necessary
perform the test upstream of the switch or RCD.
START
STOP
I
I
Black
Black
Red
Red
Green
Black
Red
Green
Green