User Manual

32 GMC-I Messtechnik GmbH
8.6.2 Leakage Current from the Application Part – IA
Direct Measuring Method
DUT Mains Plug (PC) Connected to Test Socket
Probe to P1 Terminal
Figure 1/2: The DUT (PC1) is operated with line voltage.
The measurements must be performed with mains plug polarity in
both directions. Polarity is reversed with the NL/LN key. After acti-
vating test voltage and line voltage, leakage current is measured
between the short-circuited terminals of the application parts and
PE.
Alternative Measuring Method (equiv. patient leakage current)
DUT Mains Plug (PC) Connected to Test Socket
Probe to PROBE 1 Terminal
Figure 2/2: After activating test voltage, leakage current is mea-
sured between short-circuited conductors L-N-PE (DUT mains
plug) and the short-circuited terminals of the application parts.
Setting Measuring Parameters
Direct Selection – Setting the Measurement Type
Direct selection – select polarity – for direct only (P1)
Switch
Setting
Meas.
Variant
Measuring Function
Single measurements, rotary switch level: green
Measurements at DUTs with line voltage
I
A
Direct
Alt.
I
A
Current from the application part
U
A
Tes t voltage
I
A
Measuring Parameter Meaning
Measurement type
Direct (P1) Direct measuring method (via test socket) with test probe
P1
Alternative (P1) Equivalent leakage current measuring method (via test
socket) with test probe P1
Phase angle – for direct only (P1)
0 ° or 180 ° Selectable phasing for the internal generator
relative to mains phasing
Polarity – for direct only (P1)
L/N or N/L Selection of polarity of the line voltage applied to the test
socket
U(set) – for alternative only (P1)
110 V, 115 V,
220 V, 230 V, 240 V
Selection of line voltage as test voltage
Frequency(set) – for alternative only (P1)
48 Hz to 400 Hz Selection of line frequency as test frequency
Measuring
Parameter
Meaning
Measurement type
Direct Direct measuring method (via test socket)
Alternative Equivalent leakage current measuring method
Measuring
Parameter
Meaning
Measurement type
L/N or N/L Selection of polarity of the line voltage applied to the test
socket