30 GMC-I Messtechnik GmbH
Test Sequence with Connection to the Test Socket
➭ Set the rotary switch to the R
PE
position.
➭ Select measurement type or connection type, and test cur-
rent. After pressing the Ip key, you have direct access to the
test current parameters: each time this key is pressed, the
setpoint value shown in the measuring window is switched to
the next value.
➭ Connect the DUT to the test socket.
➭ Start the test: press the START/STOP key.
➭ Contact all conductive parts which are connected to
the protective conductor with test probe P1.
During measurement, the connector cable must only be moved to
the extent to which it’s accessible during repair, modification or
testing.
If a change in resistance occurs during the manual test step of the
continuity test, it must be assumed that the protective conductor
is damaged, or that one of the connector contacts is no longer in
flawless condition.
➭ The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time this key is pressed, the currently displayed
measured value is saved to buffer memory.
➭ End the test: press the START/STOP key.
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and prompts you to save the measured values to an ID
number.
➭ Read the measured values and compare them with the
table of permissible limit values.
➭ Press the ESC key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.
Special Case: Testing Extension Cords
➭
Set the measurement type parameter to “PE(TS) – P1”.
➭ Connect the EL1 adapter to the P1 sockets at the test instru-
ment.
➭ Connect the plug at the end of the extension cord to the test
socket.
➭ Connect the coupling socket at the end of the extension cord
to the plug at the EL1 adapter.
➭ Same test sequence as described above.
Further options for testing extension cords are included in the
descriptions of single measurements in the EL1 switch position
and under automatic test sequences in switch position A8.
Special case: Permanently Installed Test Object
➭ Contact all conductive housing parts with test probe with test
probe P1.
Special Case: Testing Protective Conductor Resistance at PRCDs
(as of firmware V1.4.0)
For PRCDs whose protective conductor resistance cannot be
measured when switched off, the SECUTEST BASE(10) offers the
“active: PE(TS) - P1” measurement type, with which the PRCD
can be switched on in order to ascertain protective conductor
resistance.
➭ Set the measurement type parameter to “active”. PE(TS)
–
P1”.
➭ Connect the EL1 adapter (or a standard test probe as an al-
ternative) to the P1 sockets at the test instrument.
➭ Connect the PRCD to be tested to the test socket via its plug.
➭ Connect the EL1 adapter to the outlet on the PRCD (alterna-
tive: connect the test probe to the protective conductor of the
PRCD’s outlet, e.g. by means of an alligator clip).
➭ Start the measurement.
➭ Switch line voltage to the test socket. Then switch the PRCD
on.
➭ Otherwise, the test sequence is the same as described
above.
With the +200 mA=, -200 mA= and ±200 mA= measure-
ment types, test current rises very slowly in order to pre-
vent triggering of residual current monitoring at the
PRCD. And thus with this measurement type, it may take
longer than usual until a valid measured value is dis-
played. For this reason, the protective conductor should
not be contacted manually with the test probe, in order to
prevent a sudden rise in test current resulting in inadver-
tent tripping of the PRCD.
Maximum Permissible Limit Values for Protective Conductor
Resistance for Connector Cables with Cross-Sections of up to
1.5 sq. mm and Lengths of up to 5 m
1
Total protective conductor resistance: max. 1 Ω
Test Standard
Test
Current
Open-Cir-
cuit Voltage
R
SL
Housing –
Device Plug
R
SL
Housing –
Mains Plug
Mains
Cable
VDE 0701-
0702:2008
DIN EN 60974-4
VDE 0544-
4:2017-05
> 200 mA
4 V < U
L
<
24 V
0.3 Ω
+ 0.1 Ω
1
for each ad-
ditional 7.5
m
IEC 62353
(VDE 0751-1)
> 200 mA
0.2 Ω 0.3 Ω 0.1 Ω
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