GMC-I Messtechnik GmbH 37
Wiring Diagram
Alternative Measuring Method (equivalent leakage current)
– Alternative measurement type
– DUT mains plug (protection category 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-IIIE)
– AT3-Adapter Measurement type
– DUT mains plug to AT3-IIIE test adapter
– AT3-IIIE probe to COM-V terminals
– AT3-IIIE test plug to test socket
Schematic Diagram
Measurement of the DUT with 3-phase mains connection via
AT3-IIIE adapter
Wiring Diagram (AT3-IIIE 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 current
clamp sensor)
– Clamp measurement type
Schematic Diagram
Measurement of protective conductor current by closing the cur-
rent clamp sensor around mains cable PE for permanently
installed protection category 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
* Only with WZ12C
** Default value
SECUTEST PRO Clamp SECUTEST PRO
Transformation Ratio
Parameter
Transformation
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
SECUTEST CLIP
100 mV : 1 mA 0.1 ... 25 mA 0.00 mA ... 3.00 A
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