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High Current Test (Ze)
The high current should only be conducted with the distribution board test lead set
Kewtech ACCO63 configured in 2 wire mode. Do not use this function with the Kewtech
KAMP12 or the distribution board test lead set in 3-wire configuration.
Rotate the function selector to the Hi-I position.
Connect the test lead probes to the circuit under test and press the test button.
The result will be shown in the primary display and the mains voltage will be shown in the
secondary display.
Press the PFC PSC / Loop button
to show the PFC / PSC in the
primary display depending on
being connected L-E or L-N and
the impedance in the secondary
display area.
Note: The reading described here as PFC / PSC will be the prospective fault current for
the circuit being immediately tested. This is known as PSC in the case of a test between
Live and Neutral or PEFC for a test between Live and Earth conductors.
BS7671 (IET wiring regulations 2018) calls for an IPF value to be recorded, this is the
higher of the PSC and PEFC as described above.
No Trip Loop Test (Zs)
Connect the brown, blue and green test leads to the corresponding output terminals on
the tester.
The brown test lead can be substituted by using the remote test probe supplied. This
allows remote activation of the KT63 PLUS from the safety of the test probe ensuring that
you are always looking at the point of contact and not the KT63 PLUS.
If testing the loop impedance at a socket, plug in the 13 amp plug and switch on the
power.
N.B. The circuit under test must be live to do loop testing.
Ω
LOOP
0.71
245
V
Vln
A
PFC
345.2
0.71
Ω
Loop
