User Manual

36 GMC-I Messtechnik GmbH
Wiring Diagram
Alternative Measuring Method (equivalent leakage current) 
– Alte
rnative measurement type 
– DUT mains plug (protection classes I) to test socket
Schematic Diagram
After activating test voltage, leakage current is measured via the
DUT’s mains cable between short-circuited mains conductors L
and N and the protective conductor terminal at the DUT.
Wiring Diagram
Connection of 3-phase DUTs (only with SECUTEST PRO or feature
I01 with optional test adapter AT3-I I I E) 
– AT3-Adapter measurement type

– DUT mains plug to AT3-I I I E test adapter 
– AT3-I I I E probe to COM-V terminals 
– AT3-I I I E test plug to test socket
Schematic Diagram
Measurement of the DUT with 3-phase mains connection via 
AT3-I I I E adapter
Wiring Diagram (AT3-I I I E probe to COM-V )
Measurement of protective conductor current via current clamp
sensor with voltage output for permanently installed DUTs (only
with
SECUTEST PRO or feature I01 with optional WZ12C current
clamp sensor)
– Clamp m
easurement type
Schematic Diagram
Measurement of protective conductor current by closing the cur-
rent clamp sensor around mains PE in the power cable for per-
manently installed protection class I devices under test.
Wiring Diagram (Current Clamp Sensor to COM-V)
Set Measuring Range at Current Clamp Sensor and Parameter at
the SECUTEST PRO
SECUTEST PRO Current Clamp Sensor SECUTEST PRO
Transformer Ratio
Pa
rameter
Transformer Ratio
(Switch*)
Measuring
Range
Display Range
with Clamp
1 mV : 1 mA
WZ12C
1 mV : 1 mA 1 mA... 15 A 0 mA ... 300 A
100 mV : 1 mA **De-
fault value
SECUTEST CLIP
100 mV : 1 mA 0.1...25 mA 0.00 mA ... 3.00 A
* only with WZ12C
** Default value