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GMC-I Messtechnik GmbH
Setting Measuring Range at the Clamp and Parameters at the Test
Instrument
* Only with WZ12C
** Default value
Setting Measuring Parameters for IE
1
Measurement must be performed with mains polarity in both directions.
The largest value is documented
Test Sequence
➭
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
E
position.
➭
Connect the DUT in accordance with the selected measuring
method.
➭
Connect the applied parts.
➭
Select the measurement type:
– By setting the parameters
or
– Directly via the
Measurement Type
key
➭
In the case of
direct and differential current measurement
,
measurement must be performed with mains plug po-
larity in both directions. Select the respective polarity
to this end by pressing the
NL/LN
key.
➭
Start the test: press the
START
/STOP
key.
➭
After each reconnection to the mains, and as soon as
the first test is started, a mains connection test is exe-
cuted.
➭
You’re prompted to connect test probe P1.
The probe fuse is tested.
➭
In the case of the direct or differential measurement type:
Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭
Switch the device under test on.
➭
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.
Test Instrument
Clamp
Test Instrument
Parameter:
Transformation Ratio
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
Measuring Pa-
rameter
Meaning
Measurement Type
Suitable for
DUT Connection via
Direct
Direct measuring method (probe
P1, PE(TS), all APP sockets)
Test socket,
AT16DI/AT32DI (only diff. is sen-
sible)
Differential
Measurement in accordance with
differential current measuring
method L/N (TS).
Probe P1 and if applicable all
APP sockets are grounded via
1 k
Ω
.
Test socket
Alternative
Equivalent leakage current mea-
surement with equivalent source
between PE and L/N at the test
socket (L/N short-circuited) and if
applicable all APP sockets
Test socket, AT16DI/AT32DI
AT3 adapter
Feature I01: Measurement via re-
sidual current converter in the AT3
adapter, measured via the V-
COM sockets. Probe P1 and if
applicable all APP sockets are
grounded via 1 k
Ω
.
AT3-IIIE, AT3-IIS, AT3-IIS32
Clamp
Feature I01:
Measurement of device leakage
current via current clamp sensor
with voltage output (V-COM
sockets), with conversion to and
display as current values. Probe
P1 and if applicable all APP
sockets are grounded via 1 k
Ω
.
Permanent connection
Polarity
1
For direct, differential and AT3
adapter measurement types 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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