4
PDL 310
Operation overview continued
The PDL 310 is a multifunction tester testing for no trip loop, no-trip PFC (Prospective
Fault Current), mains voltage (L-N), correct socket wiring, and polarity.
Correct socket wiring and correct polarity
At the Socket Test stage the PDL 310 also accurately measures and displays the mains
voltage in the LCD (Liquid Crystal Display).
A reminder of the correct voltage range 207-253V AC (Harmonised Standard BS 7697
HD 42S1) is given above the display.
If the Voltage Range is outside of this standard, stop testing - your customer should notify
their electricity supply company of the problem.
If the three socket LED’s are GREEN (correct) and the correct voltage is displayed you
can proceed to Polarity Test.
The reasons for Polarity Test are covered in detail on the previous page of this User Guide.
To carry out the test apply firm (thumb) pressure to the Polarity Test Pad, note this pad
does not depress. The three Socket Test LED’s should remain GREEN - everything is
correctly wired including Polarity (live and earth/neutral are in the right place).
If the LED’s change to RED when you operate the Touch Pad - it is possible a very
dangerous condition is present and the relevant electricity supply company should be
informed immediately of this indication.
If everything in this section is a good test result you can proceed to the next sequence
of testing (see page 7).