
GMC-I Messtechnik GmbH
43
Setting Measuring Parameters for IPE
Note
The currently selected
single fault
and the
test condition
are
displayed on the initial page. In order to change them,
they have to be
selected and
set via the measuring
parameters menu.
Single fault exception: This can be set via the
SFC
direct
selection key.
The measurements have to be conducted under all fault condi-
tions. Selection is made in the measuring parameters menu under
Single Fault
.
Test Sequence for Direct Measuring Method
➭
Before conducting any leakage current measurements, make
sure that the “Ref. voltage L-PE” and “Alt. Test Freq.” mea-
surement parameters have been correctly set in SETUP (see
section 6.2).
➭
Set the rotary switch to the
I
PE
position.
➭
Select the
Direct
measurement type:
– By setting the parameters
or
– Directly via the
Measurement Type
key
➭
In the case of the
Direct
measuring type, the
Single Fault
(
SFC
key)
and
Test Condition
parameters also have to be set.
➭
Connect the DUT’s mains plug (protection class I) to the test
instrument’s test socket.
➭
Connect the applied parts.
➭
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 measurement 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.
➭
Contact 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 this key is pressed, the currently displayed
measured value is saved to buffer memory.
➭
Turn off the device under test.
➭
End the test:
press the
START
/STOP
key.
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and prompts you to save the measured values to an ID
number.
➭
Read the measured values and compare them with the table
of permissible limit values.
➭
Press 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-IIIE Adapter
Attention!
!
Please observe the operating instructions for the AT3-IIIE
regarding correct connection of the test adapter and the de-
vice under test, as well as peculiarities involved in the test
sequence.
Measuring
Parameter
Meaning
Measurement Type
Suitable for
DUT Connection via
Direct
Direct earth leakage current
measurement between
PE(mains) and PE(TS)
Test socket,
AT16DI/AT32DI (direct or diff.)
Differential
Earth leakage current measure-
ment in accordance with the dif-
ferential current measuring
method L/N(TS), PE(TS) is
grounded
Test socket
Alternative
Equivalent leakage current mea-
surement with equivalent source
between PE and L/N at the test
socket (L/N short-circuited)
Test socket, VL2E, AT3 adapter
(AT3-IIIE, AT3-IIS, AT3-IIS32),
AT16DI/AT32DI
AT3 adapter
Earth leakage current measurement
via residual current converter in the
AT3 adapter, measured via the V-
COM sockets.
AT3-IIIE, AT3-IIS, AT3-IIS32
Clamp
Current clamp measurement as
earth leakage current measure-
ment for permanently connected
devices (current clamp sensor
with voltage output via the V-
COM sockets with conversion to
and display as current values)
Permanent connection
TC – test conditions
None
APP > PE: Connect APP to PE –
all
APP sockets are connected to PE potential when this
option is activated.
Single fault (SFC) – only with direct measurement type
Normal state / N interrupted
Polarity
With direct and differential mea-
surement type only
L/N or N/L
Selection of polarity for mains voltage to the test socket
Clamp factor – only for clamp measurement type
1 mV : 1 mA
Transformation ratio of the
WZ12C
current clamp sensor.
For setting the current clamp factor at the
WZ12C
clamp and the
test instrument (see table above).
10 mV : 1 mA
100 mV : 1 mA
Transformation ratio of the
SECUTEST CLIP
current clamp sensor.
For setting the current clamp factor at the test instrument.
1 V : 1 A
Содержание SECULIFE ST PRO
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