NOTE:
When a test result is incorrect and thus the entire auto test (FAIL), eg. caused by incorrect connec-
tion of a test probe, it is possible to return to the measurement that was conducted last and repeat it.
In order to do that press when the autotest summary is displayed on screen.
If the device under test, or its power cord, is equipped with portable residual current device
(PRCD), its parameters shall also be checked. – see section 4.6 of this manual.
More messages displayed by the tester are described in section 2.1.2 of this manual.
4.5 Testing extension cords and IEC (power supply) cables
This test is performed to evaluate the technical condition of power cords and extension leads.
Many devices are provided with detachable power cords, which should be tested as the extension
cords. Extension cords may be either simple, limited to a short cable terminated with a plug or sock-
et, or more complex with the length of several tens metres, drum, cassette, sockets and also have a
residual current device or filtering units. This also applies to power cords detachable from the pow-
ered equipment.
Extension cord is a portable device exposed to damage, especially when used at construction sites or
in other severe conditions. Apart from mechanical impacts, damage may also be caused by e.g. high
external temperature or internal overheating due to high current flow. Extreme temperatures are the
major cause of deterioration. Therefore extension or power supply cord should be frequently tested.
As in the case of power tools, an important part of the test is the visual check. After the visual check
the following electrical safety tests should be performed: PE resistance and insulation resistance and
polarisation of conductors' check.
After passing visual examination check (press PASS button), when the AUTO-TEST
( icon is displayed) mode is on, the tester will automatically run subsequent
tests. The ongoing measurements can be stopped by pressing START/STOP button.
NOTE:
If the IEC testing procedure includes the measurement of PE continuity with 10A test current, the
tester has to be powered from the mains. When it's not connected the test sequence can't be initiat-
ed, mains plug icon: is flashing. In order to start the measurements, the mains power supply
must be connected.
PAT-2E and PAT-10 testers allow to run the tests from their batteries when the mains power supply is
disconnected. In order to do that, press and hold IEC button for 3 seconds. The tester will
enter the battery powered measurement mode. If the measurement procedure included some tests
requiring mains power supply (eg. I
Δ
, I
T
) they will be turned off. If the measurement of R
PE
with 10A
test current has been selected, it will be switched into 200mA test current version. Limits and test
time duration settings remain unchanged. After changing the measurement mode (selecting another
autotest or manual test), the tester will return to default settings that require mains power supply.
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