User Manual

40 GMC-I Messtechnik GmbH
Alternative Measuring Method (equivalent leakage current) 
– Alte
rnative measurement type P1 
– DUT mains plug to test socket 
– Test probe P1 to P1 terminals
Schematic Diagram
After activating test voltage, leakage current is measured between
short-circuited mains conductors L and N (DUT mains plug) and
accessible conductive parts (probe contact). The RMS, the AC or
the DC component of the current is measured.
Wiring Diagram
Direct Measuring Method for Permanently Installed DUTs 
– P
ermanent connection measurement type P1 
– Test probe P1 to P1 terminals
Schematic Diagram
The DUT is operated with line voltage from a permanent installa-
tion. Leakage current is measured
between the protective con-
ductor at the mains and the output sock
ets for safety extra-low
voltage at the DUT, one after the other, with the help of the test
probe. Furthermore, accessible, conductive parts which are not
connected to the housing must also be contacted.
Wiring Diagram
Alternative measuring method with 2-pole measurement (P1–P2) 
– Alternative
measurement type P1 - P2 
– Test probe P1 to P1 terminals
– Test probe P2 to P2 terminals
Schematic Diagram
Touch current is measured between external conductive parts
which can be contacted with test probe P2 and are not connected
to the housing, and the housing with test probe P1.
Wiring Diagram
Setting Measuring Parameters for IB
Measuring 
Parameter
Meaning
Measurement
Type,
Suitable for 
DUT Connection via
Direct P1 Direct Measuring Method Test socket, AT3 adapter 
(AT3-I I I E, AT 3-I IS, AT3-I IS32),
A
T16DI/AT32DI
Differential P1 Differential current 
measurement
Test socket
Alternative P1 Equivalent leakage current
method
Test socket, AT3 adapter 
(AT3-I I I E, AT 3-I IS, AT3-I IS32),
A
T16DI/AT32DI, VL2E
Permanent 
connection P1
Permanently installed DUT Permanent connection
Alternative 
P1–P2
Equivalent leakage current
method with SECUTEST PRO or
featur
e H01
No connection, PC3:
2-pole measurement between
test pr
obes 1 and 2 
(see section 6.6
)
Polarity – for direct and differential measurement types only
L/N or N/L Selection of polarity for mains voltage to the test socket
The measuring parameters of measuring type „Altern
ative“ U(setpoint) and fre-
quency(setpoint) are no longer included as fr
om firmware version 1.7.0. These
parameters apply to individual measurements as well as test sequences and
have to be entered in the SETUP, see section 6.2
U(set) – for alternative measurement type P1 only
110 V, 115 V, 
220 V, 230 V, 240 V
Selection of a line voltage for synthetic test voltage
Frequency (set) – for alternative measurement type P1 only
48 Hz ... 400 Hz Selection of a line frequency for synthetic test voltage