User Manual

GMC-I Messtechnik GmbH 41
Direct Selection – Setting Polarity 
– for Direct and Differential Only
Measuring 
Parameter
Meaning
Measurement Type,
L/N or N/L Selection of polarity for mains voltage to the test socket
Prerequisites for Touch Current Measurement
• Visual inspection has been passed.
• For protection class I devices: 
protective conductor resistance testing has been passed.
• Insulation resistance testing has been passed.
Test Sequence for Direct and Differential Current Methods
➭ Prior to all leakage current measurements, please make sure
that the measurement parameters „Ref. voltage L-PE“ and
„Testingfreq. Alt“ have been correctly set in the SETUP, see
section 6.2.
➭ S
et the rotary switch to the I
B
position.
➭ Sel
ect the Direct P1 or Differential P1 measurement type: 
– by setting the parameters 
or 
– via the MA ke
y
➭ In the case of direct and differential current measurement,
measurement must be performed with mains plug po-
larity in both directions. Select the r
espective polarity
to this end by pressing the NL/LN key.
➭ Connect the DUT’s mains plug (protection class II) to the test in-
strument’s test socket.
Attention!
!
Testing is conducted in the presence of line voltage.
➭ Start the test: press the START/STOP key. 

➭ Ack
nowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ Contact all accessible conductive parts, one after the
other, which are not connected to the housing with test probe
P1.
➭
The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time th
is key is pressed, the currently displayed
measured value is saved to the buffer.
➭ S
top 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.
Test Sequence for Alternative Measuring Method
➭ Prior to all leakage current measurements, please make sure
that the measurement parameters „Ref. voltage L-PE“ and
„Testingfreq. Alt“ have been correctly set in the SETUP, see
section 6.2.
➭ Set the rotary switch to the I
B
position.
➭ Se
lect the Alternative P1 
or Alternative P1–P2 (fe
ature H01) measurement type: 
– by setting the parameters 
or 
– directly by pressing the ke
y shown at the right
➭ Connect the DUT’s mains plug (protection class II) to the test
instrument’s test socket.
➭ S
tart the test: press the START/STOP key.
➭ Contact all accessible conductive parts, one after the
other, which are not connected to the housing with
test probe P1.
➭
The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time th
is key is pressed, the currently displayed
measured value is saved to the buffer.
➭ S
top the test: press the START/STOP key. 
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and pr
ompts you to save the measured values to an ID
number.
➭ Read the measur
ed values and compare them with the
table of permissible limit values.
➭ P
ress the ESC key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.
Maximum Permissible Limit Values for Leakage Current in mA
Test Standard I
C
VDE 0701-0702:2008 0.5
DIN EN 60974-4
VDE 0544-4:2009-06
10 mA
Key
I
B
Touch current (leakage current from welding current)