16 9
2.3 Environmental Specification
TEMPERATURE
Operating: 0°C to 35°C
Storage: -10°C to 50°C
3 OPERATION
3.1 Start Up
Connect the appliance tester to a suitable supply. The tester will start up in self
test mode. This will run for approximately 3 seconds during which the display will
show ‘self test’ and the software version. All push-button keys are disabled. Do
not interrupt the supply during the self test mode as the tester requires this period
to recognise the mains voltage being supplied. To do this will not damage the
tester but may corrupt stored test results.
At the end of the self test the display will show the - READY - screen showing the
last entry date and the mains supply which is connected to the PAT. See Fig. 2.
Fig. 2
3.2 Set Up Mode
Any time the instrument is in the ready mode the following setting up operations
can be carried out on the instrument prior to starting tests.
When the ‘Set up’ key is pressed a set up menu is displayed allowing class,
continuity, test records and date to be set or modified as required.
Fig. 3
tested, this will either be Class I or Class II and the pass test limit. If the displayed
type does not match the appliance to be tested then press the CLASS key to
change displayed type.
Press the PROCEED key to move onto the next display. If the appliance type is
Class II then this will be a prompt to fit the wander earth. This should be carefully
connected to any exposed metal on the appliance.
Press the PROCEED key to move onto the next display which will be a warning of
high voltage. Class I tests will skip the wander earth prompt as there is already an
earth return in the appliance lead.
Press and hold the PROCEED key. The display will show the measured value
then revert to the ready mode three seconds after the key has been released.
NOTE: It is important to test the earth continuity in a Class I appliance prior to this
test otherwise this test may not be valid.
d) Run
Full mains supply is applied to the appliance. The measured running power and
earth leakage current are displayed.
Press the RUN key. The display will momentarily show the run power limit then go
on to show a warning to remove the wander earth if it is fitted.
Press and hold the PROCEED key. After a short delay the display will show the
power used by the appliance. After the key has been released the display will
change to show the earth leakage current for three seconds then revert to the
ready mode.
If at any time the measured earth leakage or the run current exceeds the preset
limit the test will automatically be stopped.
e) Flash
Flash voltage is applied:
i) Between the mains lead phase/neutral and the earth for a Class I instrument
(test voltage 1.5kV).
OR
ii) Between the mains lead phase/neutral and the flash probe for Class II
instruments (test voltage 3kV). This test severely stresses the insulation of the
appliance under test and should not be carried out on a routine maintenance
SET UP:- CLASS:
“CONT” “ALL” “DATE”
READY DATE 15/02/02
USING 230V MAINS
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