BENNING MA 3 measuring adapter
3
5. Connecting the BENNING MA 3
The BENNING MA 3 measuring adapter is
equipped with a PTC thermistor as short-circuit
protection.
As the PTC thermistor limits the maximum cur-
rent, it is not possible to carry out functional
tests according to VDE 0701-0702 with the
BENNING MA 3 measuring adapter.
Use the BENNING MA 3 measuring adapter
only for the intended tests described in this
manual.
The manufacturers’ specifications or normative
restrictions with regard to all tests involved must
be adhered to.
To do this, thoroughly read the notes stated in
the corresponding standard, in the manufactur-
ers’ specifications of the test sample and in the
operating manual of the appliance tester.
Before you can start testing, you have to connect the
BENNING MA 3
measuring adapter to your appliance
tester.
To do this, proceed as follows:
Make sure that the appliance tester you are using is
ready for operation.
Connect the shock-proof plug of the
BENNING MA 3
measuring adapter to the test socket of your appli-
ance tester.
Connecting the BENNING MA 3
Connecting the BENNING MA 3 to the appliance tester
Connection diagram
6. Testing with the BENNING MA 3
6.1. Testing of three-phase devices
It is possible to test single-phase devices in the
same way.
6.1.1. RPE – Protective conductor resistance
Before testing
Disconnect the test sample from the mains
supply!
The maximum testing current for RPE meas-
urement is 10 A!
The rotary switch of the
BENNING MA 3 can be
used for RPE measure-
ment in any locking posi-
tion.
Before starting the test, determine the internal
RPE
re-
sistance of the measuring adapter.
Internal RPE resistance of the measuring adapter
RPE – BENNING MA 3
Start the
RPE
measurement on your appliance
tester.
Contact the test probe of the appliance tester with
the PE contact
(pos. 10, chapter 4 “Operating elements”)
of the corresponding CEE
socket
(see figure below “
RPE-BENNING MA 3
”).
Write down the measured
RPE
value.
Follow the test procedure
Class I, RPE
for “
porta-
ble test samples
”.
RPE – BENNING MA 3 (e. g. CEE 5-pin, 32 A)
Setup for measuring the internal RPE resistance of the MA 3
Connection diagram
Detailed view
Содержание 044159
Страница 2: ......
