BENNING MA 4 measuring adapter
6
6.1. Testing of three-phase devices with func-
tional test
For
appliance testing
with the differential cur-
rent measuring method, the measuring adapter
must be connected to the mains via the CEE 32
connector.
6.1.1. R
PE
– Protective Conductor Resistance
Before testing
Before starting the test, determine the internal
R
PE
resistance of the measuring adapter (see chapter 7).
Disconnect the test sample from the mains supply!
Switch the rotary switch (7) of the
measuring
adapter
to position "
L1-L2-L3
".
The rotary switch (8) of the
measuring adapter
must be set to the position for
appliance testing
.
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the
measuring adapter
.
Start the R
PE
measurement on your appliance tester.
Use the test probe to scan all accessible conductive
parts of the test sample that are connected to the protec-
tive conductor.
As a result, you will obtain the measured R
PE
value of the test
sample.
Connection diagram
Circuit diagram
6.1.2. R
Insu
1 (LN-PE)
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the
measuring adapter
.
Start the R
Insu
measurement on your appliance tester.
The insulating resistance is measured between the bridged
LN conductor and the PE of the shock-proof socket.
As a result, you will obtain the measured R
Insu
value of the test
sample.
Connection diagram
Circuit diagram
7
8
