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BESANTEK
B. CHECKING RCD TEST TIME & CURRENT
Plug the TEST BOX into an unprotected supply (no RCD trip)
and plug the RCD tester into the left-hand socket marked 'RCD
TESTER' on the TEST BOX is shown as below.
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Set the 0 positive phase (if available), select the 10mA range
on the tester and the 1OmN150mS range on the TEST BOX.
Press the RESET button on the TEST BOX first. Wait for the
"READY" LED to be lit, then press "test" button on the tester.
The TEST BOX 'TRIPPED" LED will lit but "OVER CURRENT"
LED will not be lit. Record the time displayed on the tester.
Allow from 135mS to 165mS, ± 2mS.
Tripped is approximate to 3mA tolerance (10mA± 3mA).
Over current is over 13mA.
Repeat the same step on the 30mA range of RCD tester. The
record of time shall be the same with the 1 0mA range.
Allow from 135mS to 165mS, ± 2mS.
Tripped is approximate to 10mA tolerance (30mA± 10mA).
Over current is over 40mA.
Set the 180 negative phase if the tester has a 0/180 phase
angle switch and 30mA range Set the TEST BOX to
30mN150mS and press the "test" button. Record the time
displayed on the tester, which should be 1 Oms more than the
last read of 0 positive phase.
Allow from 145mS to 175mS, ± 2mS.
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