kewtechcorp.com
21
kewtechcorp.com
RCD test procedure
Select the type and rating of the RCD to be tested with the rotary function selector switch and
RCD type button.
Connect the 4mm plugs of the chosen test lead to the corresponding L, N & E terminals of
the KT63DL and connect the other end to the socket or circuit terminals under test.
If using the distribution board test lead set ACC063 observe the correct polarity by
connecting the Brown probe to the Live conductor, Blue to Neutral and Green to Earth.
Touch the touch-pad area next to the test button. There should be no change in the indication
given. If the Voltage/Polarity LED flashes Red and a warning tone is emitted when the touch-
pad is touched a potentially dangerous polarity reversal exists see page 7 for example. Do
not proceed. If in any doubt advise the customer to contact the electricity supply company
immediately.
User selected test
The recommended order of tests is firstly at ½x the rated current followed by a test at the
rated current and finally, for 30mA RCD’s only, 5x the rated current.
The default test parameters of x½ for the current multiplier and 0° for the phase polarity will
be automatically selected for the first test. These will be displayed on the LCD along with the
Line-Neutral voltage.
Press the test button and a test will be conducted at these settings. If successful and the
RCD has failed to trip a single beep will sound and the main display will be similar to figure 5.
Displaying result of 1st ½x test
(Figure.5)
Changed polarity ready for 2
nd
test
(Figure 6)
