Benning 044162, Operating Manual

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BENNING MA 4 measuring adapter
18
6.3.5. Function table
Rotary
switch
position
L1-N L2-N L3-N Result
L1, L2,
L3
L1, L2, L3 pass
LN shorted or N inter-
rupted
L1 interrupted
L2 interrupted
L3 interrupted
L1
L1 pass
L1-N shorted
or
L1 or N interrupted
L1-L2 shorted
L1-L3 shorted
L2
L2 pass
L2-N shorted
or
L2 or N interrupted
L1-L2 shorted
L2-L3 shorted
L3
L3 pass
L3-N shorted
or
L3 or N interrupted
L1-L3 shorted
L2-L3 shorted
Remarks concerning the function table
LED status = switched on
LED status = switched off
6.4. Testing of PRCDs and mobile power distrib-
utors (RCDs)
A portable residual current protection device (PRCD) provides
protection against hazardous body currents in the downstream
circuit in case of direct contact. The rated value for the tripping
fault current depends on the appliance tester used and on the
residual current protection device (RCD) used.
The following PRCDs/RCDs can be tested:

PRCD S

PRCD S+

PRCD K

PRCD AC

PRCD A

PRCD F

PRCD B

PRCD B+

PRCD 2-pin

PRCD 3-pin

Mobile power distributors (RCD) (types A, B)
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.
The shock-proof plug of the measuring adapter must
be connected to the test socket of the ST 755 / 760.
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!
PRCD/RCD tests may only be carried out without
load, as otherwise the appliance tester will be de-
stroyed.
Symbol:
The rotary switch (7) of the measuring adapter can
be used in any position for PRCD measurement.
The rotary switch (8) of the measuring adapter
must be set to the position for appliance testing!
The rotary switch (8) of the measuring adapter must
not be changed during the test.
8 7