User Manual

28 GMC-I Messtechnik GmbH
Protection Class I Devices 
Special Case: Line Voltage at Test Socket (for testing PRCDs) 
– Measurement type PE(TS) - P1 (active) 
– DUT mains plug to test socket 
– Test probe P1 to P1 terminals
Schematic Diagram
Protective conductor resistance is measured between the earth-
ing contacts at the mains plug and the earthing contac
t con-
nected to the housing by contacting th
e housing with test probe
P1.
Wiring Diagram
Protection Class I Devices 
Special case: permanently installed DUTs 
– M
easurement type PE(mains) - P1 
– Test probe P1 to P1 terminals
Schematic Diagram
In the case of permanently installed DUTs, protective conductor resis-
tance is measured between the m
ains power earthing contact
and the earthing contact connected to the housing by contacting
the housing with test probe P1.
Wiring Diagram
Measurement via current clamp sensor 
at permanently installed DUT 
– M
easurement type PE(mains) - P1 clamp 
– Test probe P1 to P1 terminals 
– Clamp to COM-V (only withSECUTEST PRO or feautureI01 with
optional WZ
12C current clamp sensor)
Schematic Diagram
Measurement of test current by closing the current clamp sensor
around mains PE and contacting the housing with test probe P1
for permanently installed protection class I devices under test
Wiring Diagram
Set Measuring Range at Current Clamp Sensor and Parameter at
th
e SECUTEST PRO or
SECULIFE ST BASE
This measurement type can only be selected if test current is set
to 10 A AC.
SECUTEST PRO Current Clamp Sensor SECUTEST PRO
Transformer Ratio
Pa
rameter
Transformer Ra-
tio
( Switch*)
Measuring
Range
Display Range
with Clamp
1 mV : 1 mA
WZ12C
1 mV / mA 1 mA... 15 A 0 mA ... 300 A
100 mV:1 mA
SECUTEST CLIP
100 mV/mA 0.1...25 mA 0 mA ... 300 A
* only with WZ12C
2-Pole Measurement at Permanently Installed DUTs 
(only with SECUTEST PRO or feature H01) 
– M
easurement type P1 - P2 
– Test probe P1 to P1 terminals
– Test probe P2 to P2 terminals
Schematic Diagram
PE at the mains connection is contacted with the second test
probe instead of via the test instrument’s mains plug.