BENNING MA 3 measuring adapter
4
Test procedure VDE 0701-0702
Class I; RPE
Portable test sample
Connect the CEE connector of the test sample to the
corresponding CEE socket of the
BENNING MA 3
measuring adapter.
Start the
RPE
measurement on your appliance tester.
Use the test probe to scan all accessible conductive
parts of the test sample that are connected to the pro-
tective conductor.
Read the
RPE
measuring result shown on the display of
the appliance tester.
Subtract the measured
RPE
value of the
BENNING MA 3
from the
RPE
measuring result of the
test sample.
As a result, you will obtain the measured
RPE
value of the
test sample.
Edit the measured
RPE
value in the appliance tester ac-
cording to the calculated measuring value.
The manufacturer recommends to write down
the known measured RPE values of all CEE
connections of the BENNING MA 3 for future
measurements and add them to the measuring
adapter.
Application
Class I; RPE
Portable test sample
Connection diagram
Circuit diagram
6.1.2. RInsu – Insulating resistance
Before testing
Disconnect the test sample from the mains
supply.
Switch the rotary switch of
the BENNING MA 3 to the
locking position “L1-L2-L3”.
Test procedure VDE 0701-0702
Class I; RInsu
Portable test sample
Connect the CEE connector of the test sample to the
CEE
socket
of the
BENNING MA 3
.
Start the
RInsu
measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
(depending on the
RInsu
test sample).
As a result, you will obtain the measured
RInsu
value of
the test sample.
Insulation faults
In case of an insulation fault, i. e. if the value
falls below the admissible insulation re-
sistance, you can determine the external con-
ductor at which the insulation fault occurs by
changing the position of the rotary switch.
To do this, successively turn the rotary switch to the
positions “
L1
”, “
L2
” and “
L3
” while observing the
measured values displayed on the appliance tester.
1. If the measured insulating resistance is within the
admissible limits, the selected external conductor is
not defective.
2. If the measured insulating resistance is outside the
admissible limits, the selected external conductor or
neutral conductor is defective.
3. If a fault occurs in every locking position of the ro-
tary switch, the neutral conductor is affected.
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