User Manual

GMC-I Messtechnik GmbH 37
Setting Measuring Parameters for IPE
Measuring 
Parameter
Meaning
Measurement Type,
Suitable for 
DUT Connection via
Direct Direct measuring method Test socket, AT16DI/AT32DI (di-
rect or diff.)
Differential Differential current 
measurement
Test socket
Alternative Equivalent leakage current
me
thod
Test socket, VL2E, AT3 adapter 
(AT3-I I I E, AT 3-I IS, AT3-I IS32), 
AT16DI/AT32DI
AT3 adapter
SECUTEST PRO or feature I01: 
measurement with AT3 adapter
AT3-I I I E, AT3-I IS, AT3-I IS32
Clamp
SECUTEST PRO or feature I01:
Measurement of protective con-
ductor current via current clamp
sensor
with voltage output, and
conversion to and display as cur-
rent values.
Permanent connection
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 ty
pe „Alternative“ 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 only
110 V, 115 V, 
220 V, 230 V, 240 V
Selection of a line voltage for synthetic test voltage
Frequency – for alternative measurement type only
48 Hz ... 400 Hz Selection of a line frequency for synthetic test voltage
Clamp factor – only for clamp measurement type
1 mV : 1 mA Transformer ratio of the current clamp sensor WZ12C. 
For setting the current clamp factor at the W
Z12C clamp and the
SECUTEST PRO (see table above).
10 mV : 1 mA
100 mV:1 mA Transformer ratio of the current clamp sensor SECUTEST CLIP. 
For setting the current clamp factor at the SECUTEST PRO.
1 V : 1 A
Test Sequence for Direct Measuring Method
➭ Prior to all leakage current measurements, please make sure
that the measurement parameters „Ref. voltage L-PE“ and
„Testingfreq. Alt“ have been correctly set in the SETUP, see
section 6.2.
➭ Set the rotary switch to the I
PE
position.
➭ Se
lect the Direct measurement type: 
– By setting the parameters 
or 
– Directly by pressing the key shown at the right
➭ Connect the DUT’s mains plug (protection class I) to the test
instrument’s test socket.
➭ Make sure that the device under test is switched off.
➭ Start the test: press the START/STOP key.
➭ Switch the device under test on.
➭ The measur
ement must be performed with mains plug
polarity in both directions. by pressing the NL/LN key.
➭ Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ Switch the device under test on.
➭ Contac
t all accessible conductive parts, one after the other,
with test probe P1, which are not connected to the housing,
as well as any output sockets for safety extra-low voltage if in-
cluded.
➭
The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time th
is key is pressed, the currently displayed
measured value is saved to the buffer.
➭ T
urn off the device under test.
➭ S
top the test: press the START/STOP key. 
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and pr
ompts you to save the measured values to an ID
number.
➭ Read
the measured values and compare them with the table
of permissible limit values.
➭ P
ress the ESC key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.
Test Sequence with AT3-I I I E Adapter
Attention!
!
Please observe the operating instructions for the AT3-
I I I E regarding correct connection of th
e test adapter and
the device under test, as well as peculiarities involved in
the test sequence.