48 GMC-I Messtechnik GmbH
Direct measuring method
– Measurement type permanent connection P1
– Permanent Connection
– Probe to P1 Terminal
Schematic Diagram
Patient leakage current is measured between the patient termi-
nals and PE at the mains connection.
Wiring Diagram
Setting Measuring Parameters for IP
Test Sequence
➭ Before conducting any leakage current measurements, make
sure that the “Ref. voltage L-PE” and “Testingfreq. Alt” mea-
surement parameters have been correctly set in SETUP (see
section 6.2).
➭ Set the rotary switch to the I
P
position.
➭ Connect the DUT to the test socket.
➭ Select the measurement type:
– By setting the parameters
or
– Directly via the Measurement Type key
➭ In the case of direct measurement P1, measurement
must be performed with mains plug polarity in both di-
rections. Select the respective polarity to this end by
pressing the NL/LN key.
➭ Start the test: press the START/STOP key.
➭ After each reconnection to the mains, and as soon as
the first test is started, a mains connection test is exe-
cuted.
➭ In the case of measurement type direct P1:
Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ Switch the device under test on.
➭ Contact the short-circuited inputs for the applied parts with
test probe P1.
➭ 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.
➭ Turn off the device under test.
➭ 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.
Maximum Permissible Limit Values for Leakage Current in mA
Measuring
Parameter
Meaning
Measurement Type
Suitable for
DUT Connection via
Direct P1 Direct measuring method (via
test socket) with test probe P1
Test socket
Permanently
connected P1
Permanently installed DUT Permanent connection
Polarity – for direct P1 only
L/N or N/L Selection of polarity for mains voltage to the test socket
Test Standard
I
P
Type B
Type
BF
Type
CF
IEC 62353
(VDE 0751-1)
Direct current 0.01 0.01 0.01
Alternating current 0.1 0.1 0.01
EN 60601
Direct current 0.01 0.01 0.01
Alternating current 0.1 0.1 0.01
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