
48
GMC-I Messtechnik GmbH
Test Sequence for Direct and Differential Current Methods
➭
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
T
position.
➭
Select measurement type
Direct
P1
or
Differential P1
:
– By setting the parameters
or
– Directly via the
Measurement Type
key
➭
In the case of measurement type
Direct P1
, the
Single Fault
param-
eter (
SFC
key) must be additionally set.
➭
In the case of measurement type
Direct P1
or
Permanent Connection
P1
, the
Test Condition
parameter must be additionally set.
➭
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.
➭
Connect the DUT’s mains plug (protection class II) to the test in-
strument’s test socket.
Attention!
!
Testing is conducted in the presence of line voltage.
➭
In the case of measurement type
Direct
and test condition
APP >
PE
: Connect the applied parts.
➭
Start the test:
press the
START
/STOP
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,
which are not connected to the housing with test probe P1.
➭
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 for Alternative 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
T
position.
➭
Select measurement type
Alternative
P1
or
Alternative P1–P2
(feature H01
)
:
– By setting the parameters
or
– Directly via the
Measurement Type
key
➭
Connect the DUT’s mains plug (protection class II) to the test
instrument’s test socket.
➭
Start the test:
press the
START
/STOP
key.
➭
Contact all accessible conductive parts, one after the
other, which are not connected to the housing with
test probe P1.
➭
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.
➭
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.
Maximum Permissible Limit Values for Leakage Current in mA
Key
I
T
Touch current (leakage current from welding current)
See section 14.8 for further limit values.
Test Standard
I
C
VDE 0701-0702:2008
0.5
DIN EN 60974-4
VDE 0544-4:2009-06
10 mA
Содержание SECULIFE ST PRO
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