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10.5
Connecting the DUT
➭
Connect the DUT to the test instrument in accordance with
the selected test sequence.
– Test socket
– Permanent connection
– Adapter
Note concerning use of the AT3-IIIE test adapter
Please note that polarity reversal with the help of the utilized test
instrument isn’t active when the AT3-IIIE adapter is used for test-
ing single-phase DUTs (socket 3 / earthing contact). In this case,
all leakage current measurements must be performed manually
with the plug in
both
directions.
Switch Settings A1 ... A9
Connection depends on the type of DUT (see the respective con-
nection type in the classification parameters tables).
VDE 0701-0702-VLTG
For testing extension cords in accordance with standards: con-
nection to the test socket via the following adapter:
–
EL1:
for single-phase extension cords
–
VL2E:
for single and 3-phase extension cords
10.6
Selecting a Test Object
➭
If no DUT has been selected in the initial display, enter its ID
number (for example using a barcode scanner) after selecting
ID
.
➭
Alternatively, activate the database view with the
MEM
key.
➭
Select the DUT for the test sequence with the scroll keys.
➭
Return to the measuring view by pressing the
ESC
key.
10.7
Checking Connection and Starting the Test Sequence
➭
Trigger the connection test and the test sequence
by pressing the START key.
The following checks are run automatically before the
test sequence is started:
•
P1 probe test (determines whether or not test probe P1 is con-
nected and fuse link P1 is intact)
Attention!
!
If the fuse at test probe P1 is defective, all subsequent
measurements using this measuring path are incorrectly
evaluated as good!
•
Insulation test (whether or not the DUT is set up in a well-insu-
lated fashion)
•
On test and short-circuit test
(prerequisite: sequence parameter for “short-circuit test L-N”
is preset to “on”.
In order to be able to detect a short-circuit at the DUT, testing
is conducted between L and N, as well as LN and PE.
Note
If you deselect important test steps under sequence param-
eters (set to off), the test sequence might not fulfill the
requirements stipulated by the standard any more.
If you have set the “
Detected classification
” parameter for the
respective test sequence to “Always accept” and the “
Auto-
detection of
” parameter to “Connection and PC” (before trig-
gering
Start
), the following additional checks will be run
before the test sequence is started:
•
Protection class detection for DUTs with protective conductor *
•
Connection test *: Checks whether the DUT is connected to
the test socket. In the case of protection class I: whether or
not the two protective conductor terminals are short-circuited.
* Applies to
M7050
with feature B00 and B09
and B10
10.8
Executing and Evaluating Test Steps
Manual Evaluation of Visual Inspection
(prerequisite: “visual inspection” sequence parameter is preset to
“on”.)
➭
Evaluate the visual inspection.
➭
If you mark even one visual inspection as not passed
with the key shown at the right, the sequence is aborted and
the test is evaluated as not passed.
➭
Resume the test sequence.
Connecting Line Voltage
Connecting line voltage to the test socket at the test instrument
and performance of a function test are only permissible if the DUT
has already passed all
safety test steps
! Depending on the DUT’s
protection class, this means that visual inspection, as well as
measurement of protective conductor resistance and insulation
resistance, must have been passed.
Do not start measurements at your test instrument unless the test
instrument and the DUT are in plain view. Do not connect line
voltage to the test socket of your test instrument before the sur-
rounding area has been secured.
Test Steps with Manual Evaluation (e.g. R
PE
)
➭
Observe instructions which appear at the display, e.g.
prompting to contact parts with test probe P1.
If the measured value appears green at the display, it lies within
the limits specified by the standard.
➭
The measured value recording symbol appears in the
softkey bar. The 0 indicates that no measured values
have thus far been saved to buffer memory.
➭
Each time this key is pressed, the measuring or evaluation
procedure is restarted.
➭
Initially the digit blinks (here a 1 without icon) until the
measured value settles in. The evaluation cycle is visu-
alized as follows: the progress bar starts at the left-
hand edge of the display and moves to the right. When
it reaches the rightmost position, evaluation has been
completed and the symbol shown at the right appears
with the current number.
➭
Depending on whether you want to delete the last
value saved to the clipboard or all values, press the
symbol with the wastebasket shown at the right an ap-
propriate number of times.
MEM
ESC
0
1
1
Summary of Contents for SECULIFE ST PRO
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