Figure 5.3.1 Instrument ready for operation
Connect the desired test leads to the UUT. Please
refer to Figure 5.3.2 or Figure 5.3.3 for connec-
tion.
Figure 5.3.2 Connection mains internal resistance,
test with shockproof plug
Figure 5.3.3 Connection mains internal resistance,
test with test leads
Figure 5.3.4 Display for phase position L to L/L1 and
N to N/L2
Figure 5.3.5 Display for phase position N to L/L1 and
L to N/L2
If the test instrument shows the pin assign-
ment in compliance with Figure 5.4.5, i.e. the
'turn mains plug’ symbol (5) is flashing, the
test cannot be started. When starting the test,
an acoustic signal is audible. The shockproof
plug must be turned or L and N have to be ex-
changed for the test leads connected.
To carry out the socket test touch the contact
electrode 'PE' (21).
If the test instrument indicates the symbols
(14), 'socket error' (4), and 'PE error' (16), or
'contact voltage' (15), in compliance with fig-
ure 5.3.6, the protective conductor (PE) is open
or a voltage is present! This error is fatal and
must immediately be eliminated!
Figure 5.3.6: PE error display
16
Testing the Mains Internal Resistance
PTDB90510001.qxd 02.03.2006 12:23 Uhr Seite 60
