BENNING MA 4 measuring adapter
15
6.3. Testing of extension cables
Symbol:
6.3.1. R
PE
– Protective conductor resistance
For these tests, the MA 4 must be connected to the
mains using the CEE 32 connector.
The ST 755 / 760 must be connected to the shock-
proof socket of the measuring adapter.
Before testing
Before starting the test, determine the internal R
PE
resistance of the measuring adapter (see chapter 7).
The maximum testing current for R
PE
measurement
is
10 A
!
The rotary switch (7) of the
measuring adapter
can
be used in any position for R
PE
measurement.
The rotary switch (8) of the
measuring adapter
must be set to the position for
cable testing
.
6.3.2. R
PE
(e. g. CEE 5-pin, 32 A)
Test procedure (VDE 0701-0702)
Cable test
Connect both cable connections to the corresponding
CEE sockets of the
measuring adapter
.
Connect the test probe of your appliance tester to the
PE socket (see pos. 1, chapter 4) of the
measuring
adapter
.
Start the R
PE
measurement on your appliance tester.
Read the R
PE
measuring result shown on the display of
the appliance tester.
Subtract the measured R
PE
value of the
measuring adapter
from the R
PE
measuring result of
the test sample.
As a result, you will obtain the measured R
PE
value of the test
sample.
Edit the measured R
PE
value in the appliance tester ac-
cording to the calculated measuring value.
Application
Cable test
Connection diagram
Detailed view
Circuit diagram
8
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