Test Procedure, Commissioning - Dehn PM 20 Bedienungsanleitung

10. Test procedure, commissioning

If the PM 20 tester is switched off:
- Establish a connection to the test adapter, insert the device under test and close the cover.
- Directly connect the device under test to the test voltage output (3 and 4).
Please observe the safety and application notes!
Switch on the PM 20 tester,
which is supplied by an
external voltage source,
switch 1 of the device.
At first, the version of the device
PM 20 v1 is displayed for a
short period of time before the
readness indicator V appears
Set the required test programme at the adapter (polarity selector
switch, test selector switch and test step selector switch)
Measurement is started by briefly pressing the Test button.
>>> The test voltage rises with 1000 V/s, value of the test
voltage is displayed.
>>> The integrated sparkover detection completes testing automatically and the result is
displayed:
> 1100 V
The measuring range is
exceeded
Check test set-up and/or
selector switch and
repeat measurement if
or use it as result
Continue with next test step.
Is a test adapter used ?
Switch off PM 20 tester!
Further tests are possible! If no test
adapter is used, the PM 20 tester has
to be switched off for exchanging the
Figure 6 Test procedure
by pressing
Display
If low
check the power supply, battery
or power supply device.
depending on the test scheme and evaluation table.
d.c. sparkover voltage
e.g. 230 V
measurement result determined for the
protective device/protection module to
necessary
be tested by means of the reference
values stated in the valuation table.
YES NO
device under test!
Switch on
the network-independent
PM 20 tester by pressing
switch 1 of the
device.
BATT is displayed,
GA 230 V VR 404
1 mA reference
voltage e.g. 404 V
OK/NOT OK (evaluation of the
Are all individual measurements carried out
according to the test scheme?
NO
Are all individual measurements carried out
according to the test scheme?
NO
Protective device/
protection module is
damaged and has to be
replaced
ATTENTION!
Replace battery or
operate battery by means
of external voltage
supply
or check its output
voltage/performance. See
"Safety and application
notes", page 3.
Testing is not possible
any more, switch off
tester and disconnect
all lines!
V
x x xV
low BATT
Check power
supply!
YES
YES
Protective device/
protection module is ok
and can be used in the
system!
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