MI 3101 EurotestAT: Appendix F
Country notes
120
Circuit for measurement the resistance of PE wire
L1
L2
L3
N
PE
R
E
Ro
L
PE
N
L/L
1
N/L2
PE/L3
N/
L
2
L
/L
1
PE
3
/L
Distribution
board
Step 1
Step 2
Outlets and consumers
Figure F.1: Two step procedure for PE wiring resistance measurement – connection of
plug commander and universal test cable
Auto sequence recommendation
For measurement of the PE resistance the following shall be applied:
-
Two auto sequences with at least one function can be prepared (see
4.3
).
-
The first auto sequence (
sequence A
) intended for measurement at distribution
board level shall contain function
LOOP Re
.
-
The second auto sequence (
sequence B
) intended for measurement of wall sockets
and consumers shall contain
CONTINUITY
function
with sub-function
LOOP Re
.
PE wire resistance measurement procedure
Select the
AUTOSEQUENCE
mode.
Select auto sequence
A
.
Connect
test leads to the tested distribution board and the instrument (see
figure
F.1
).
Press the
TEST
key.
After the measurement is finished, select auto sequence
B
.
Connect
test leads to the tested wall socket or consumer and the instrument (see
figure F.1
).
Select test
parameters
(optional).
Connect
test cable to the instrument.
Press the
TEST
key.
After the measurement is finished,
store
the result (optional).
