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23
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8.4
Uc Testing
1．Power on the instrument and set the function switch to "Uc".
2．Set the IΔN to the rated residual operating current of the RCD under test.
4． Connect the instrument to the RCD to be tested either via a suitable
socket outlet (see Fig 11) or using the Model 7133B (OMA DIEC) test lead
set (see Fig 12).
5． Make sure that the P-E and P-N wiring check LEDs 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 LEDs are correctly lit, press the test button.
8.5
Operation of KEW 6010B RCD testing
The RCD range of KEW 6010B has been improved comparing with our Model
6010A. Therefore, may differ a little bit from Model 6010A.
● Distortion factor of test current
Difference: operating time of some RCD
● Comparison Uc value with UL value
Difference: time to compare the Uc value with the UL value more correctly,
after pressing the test button at RCD ranges. (Max. 3 sec.)
8.6
RCD testing
WARNING
DO NOT PROCEED WITH TESTING UNLESS THE P-E AND P-N
LEDs ARE LIT TO CONFIRM THAT THE WIRING IS CORRECTLY
CONNECTED. Should these two LEDs not be lit, investigate the
wiring connections of the installation and rectify any faults before
proceeding with the test. If the
LED is lit do not proceed.
8.6.1 "NO TRIP " and "TRIP " test
1． Power on the instrument and set the function switch to "X1/2" for the "no
trip" test, which ensures that the RCD is operating within its specification
and is not too sensitive.
2．Set the IΔN to the rated residual operating current of the RCD under test.
(The initial value is 30mA)
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