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Test Leads
Where testing is to be conducted at a point on the circuit other than a socket outlet the distribution
board test lead set Kewtech ACC063 is used in 3-wire mode as described in the previous chapter.
The probes can be fitted with either prod tips or crocodile clips as required.
Mains Supply Wiring and Voltage Test
When first connected to a mains supply the KT63 PLUS will automatically conduct a safety test to
ensure that the Live, Neutral/Earth conductors are correctly connected and that the supply voltage
is in the acceptable range of 207-253V.
If all is well the VOLTAGE/POLARITY warning LED will light Green and the supply voltage will be
displayed in the primary display area.
In the event of a problem with either the mains voltage supply or reversed connections the
VOLTAGE/POLARITY warning LED will light Red, a warning tone will be sounded and testing will be
inhibited.
RCD Test Procedure
Select the type of RCD by pressing the RCD type button and the rating of the RCD to be tested with
the rotary function selector switch.
Connect the 4mm connectors of the chosen test lead to the corresponding L, N & E terminals of
the KT63 PLUS and connect the other end to the socket or circuit terminals under test.
If using the distribution board test lead set Kewtech ACC063 observe the correct polarity by
connecting the Brown probe to the Live conductor, Blue to Neutral and Green to Earth.
User Selected Test
The recommended order of tests is firstly at ½x the rated current
followed by a test at the rated current (x1) and finally, for 30mA RCD’s
only, 5x the rated current.
The default test parameters of x½ x1 x5 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 Live-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 this example
x1
V
VLN
242
x1
MS
PASS
40.0
