Features
5
Loop impedance, PSC and RCD testing functions have the following
features:
Voltage level In the LOOP/PSC/RCD modes, supply
voltage is displayed when the instrument is
connected to the supply until the test button
is pressed.
Wiring check Three LEDs indicate if the wiring of the
circuit under test is correct.
Over temperature Detects overheating of the internal
protection resistor (used for LOOP and PSC 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 selector is used in the
RCD mode to obtain the maximum trip time
of an RCD for the test selected.
DC Test Allows testing of RCDs which are sensitive to
DC fault currents.
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 10 minutes.
The Auto power off made can only be
cancelled when the Function switch is
switched to the OFF position and then back
on.
V-NE Monitoring Automatically aborts measurement when the
Circuit N-E voltage rises to 50V or greater on RCD
ranges.
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