KYORITSU 6011A - Manual (Page 26)

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4．Connect the instrument to the RCD to be tested either via a suitable socket
outlet（see fig 9）or using the OMA DIEC(Model7133) test lead set（see
fig 10）.
5．Make sure that the P-E and P-N wiring check lamps are lit and the wiring
incorrect LED is not lit. If they are not, disconnect the tester and check
the wiring for a possible fault.
6．If the lamps are correctly lit, press the test button to apply half the rated
tripping current for 2000 ms, when the RCD should not trip. The PN and PE
LEDs should remain on indicating the RCD has not tripped.
7．Press the phase selector switch to indicate 180
™
in the display and repeat
the test.
8．In the event of the RCD tripping, the trip time will be displayed, but the RCD
maybe faulty.
9．Set the function switch to X1 for the“trip”test, which measures the time
taken for the RCD to trip with the set residual current.
10．Press the phase selector switch to indicate 0
™
on the display.
11．Make sure that the P-E and P-N wiring check lamps are lit. If they are not,
disconnect the tester and check the wiring for a possible fault.
12．If the lamps are lit, press the test button to apply full rated tripping current
and the RCD should trip, the tripping time being shown on the display. If
the RCD has tripped the PN and PE LEDs should be off. Check this is so.
13．Press the phase selector switch to indicate 180
™
in the display and repeat
the test.
14．MAKE SURE TO KEEP CLEAR OF EARTHED METAL DURING THE
OPERATION OF THESE TESTS.
15．The unit calculates the contact voltage with the impedance measured, and
if the calculated contact voltage exceeds 50V, the unit indicates the
warning on the LCD and stops the measurement. If the value is less than
50V, the unit proceeds with the measurement of a RCD.
8.6 Testing RCDs used to provide supplementary protection. (X5 TRIP TEST)
RCDs rated at 30 mA or less are sometimes used to provide extra protection
against electric shock. Such RCDs require a special test procedure as follows:-
1．Set the function switch to X5 for the“fast”trip test.
2．Press the phase selector switch to indicate 0
™
in the display.
3．Connect the test instrument to the RCD to be tested.
4．Make sure that the P-E and P-N wiring check lamps are lit. If they are not,
disconnect the tester and check the wiring for a possible fault.
5．If the lamps are lit, press the test button to apply a test current of 150mA
where the RCD should trip within 40ms, the tripping time being shown on the