User guide

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Over temperature protection Detects overheating of the internal resistor
(used for loop and RCD tests) and of the
current control MOS FET (used for RCD
tests) displaying a warning symbol ( ) and
automatically halting further measurements.
Phase angle selector The test can be selected from either the
positive (0
™
) or from the negative (180
™
) half-
cycle of voltage. This will prevent tripping of
some polarised RCDs when loop testing and
may give a more accurate reading when
testing RCDs.
Auto data hold Holds the displayed reading for a time after
the test is complete.
Auto power off Automatically switches the instrument off after
a period of approximately 1 minutes.
V-NE Monitoring Circuit Automatically aborts measurement when the
N-E voltage rises to 50V or greater on RCD
ranges.
Optional Accessory OMA DIEC distribution board or lighting circuit
test lead for LOOP ／ RCD testing.