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Automatic Test
For the most commonly encountered 30mA RCD the test process is
even simpler. Just turn the rotary selector to the ‘30mA AUTO’ setting
and the KT63 PLUS will conduct all six required tests at a single touch
of a button. Then when the RCD under test “trips” reset the RCD and
continue to do so until the test procedure is complete then return to
your KT63 PLUS where all results will be displayed on one screen.
Pass or Fail Result
In addition to displaying the time taken for the RCD to trip the KT63 PLUS will also indicate whether
it has passed or failed the test requirement of BS7671 (IET wiring regulations 2018).
The main display shows that the fault current was supplied for
over 2000 milliseconds (2 seconds) without tripping the RCD. The
secondary display confirms that this passes the requirements of
BS7671 (IET wiring regulations 2018).
In the event of the RCD failing the test and tripping within 2 seconds at
half the rated current the main display will show the trip time and the
secondary display will show ‘FAIL’. A short 2 tone alert will also sound.
After displaying the result for a few seconds the tester will switch to the 180° phase polarity
setting in readiness for the next test.
When both tests have been conducted at the x½ setting press the multiplier button to change the
test current to the x1 setting.
Press the test button to conduct a test at the x1 setting a 0°. The result will be shown as a pass if
RCD trips within 300ms. After displaying the result for a few seconds the tester will switch to the
180° phase polarity setting in readiness for the second test at the x1 current setting.
If the 30mA setting has been selected the x5 current option will be available by using the multiplier
button. This option is not available or required for other ratings.
Ω
VLN:245V
30mA x 1/2
>2000ms
PASS
30mA x 1/2
>2000ms
PASS
30mA x 1
40.0ms
PASS
30mA x 1
50.0ms
PASS
30mA x 5
10.0ms
PASS
30mA x 5
20.8ms
PASS
x 1/2
PASS
2000
>
ms
Ω
x 1/2
FAIL
300.0
ms
