User Manual

GMC-I Messtechnik GmbH 45
8.7.4 Leakage Current from the Applied Part – IA
I
A
Single measurements, rotary switch level: green
Switch Position
Measure-
ment Type,
With Mains 
to Test
Socket
Measure-
ment Type,
Without
Mains 
to Test
Socket
Measuring Functions
I
A
Direct P1 I
A
Current from applied part
U
A
Test voltage
Alternative P1
Perm. con. P1
Direct Measuring Method 
– Dir
ect measurement type P1 
– DUT mains plug (PC1) connected to test socket 
– Probe to P1 Terminal
Schematic Diagram
The device under test (PC1) is operated with mains power. 
The measurements must be performed with mains plug polarity in
both
directions. Polarity is reversed with the NL/LN key. After acti-
vating t
est voltage and line voltage, leakage current from the appli-
cation part is measured between the short-circuited terminals of
the applied
parts and PE (DUT mains plug).
Wiring Diagram
Alternative Measuring Method 
(equivalent patient leakage current) 
– Alternative M
easurement Type P1 
– DUT mains plug (PC1) connected to test socket 
– Probe to P1 Terminal
Schematic Diagram
After activating test voltage, leakage current from the application
part is measured between short-circuited conductors L-N-PE
(DUT mains plug) and the short-circuited terminals of the applied
parts.
Wiring Diagram
Direct Measuring Method 
– P
ermanent connection measurement type P1 
– Permanent connection 
– Probe to P1 terminal
Schematic Diagram
Leakage current from the application part is measured between
the short-circuited terminals of the application parts and PE at the
mains connection.
Wiring Diagram