Gossen Metrawatt GmbH 67
Test Procedure
➭ Before conducting any leakage current measurements, make
sure that the “Ref. voltage L-PE” and “Alt. Test Freq.” mea-
surement parameters have been set correctly in SETUP (see
section 13.3).
➭ 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. Press the Polarity softkey in order to change
polarity.
➭ 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 icon shown at the right appears. Each
time this key is pressed, the currently displayed mea-
sured value is saved to buffer memory.
➭ Turn off the device under test.
➭ End the test: Press the START/STOP key.
The save icon appears (floppy disk showing the num-
ber of measured values stored to buffer memory) and
prompts you to save the measured values to a test ob-
ject 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 Patient Leakage Current in
mA
Test Standard
I
P
Type B
Type
BF
Type
CF
IEC 62353 / EN 62353 / VDE 0751-1
(or IEC 60601)
Direct current 0.01 0.01 0.01
Alternating current 0.1 0.1 0.01
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