Manual

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7
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4. Features
The KEW4140 LOOP/PFC/PSC tester performs three function in
one instrument.
1Loopimpedancetester
2 Voltage tester
3Phaserotationtester
TheKEW4140havethefollowingfeatures:
ATT (Anti Trip Technology) ATT enables a measurement without
tripping the RCDs with the rated
residual current of 30mA or more.
Wiringcheck Three Wiring symbols indicate if
the wiring of the circuit under test is
correct.
Over temperature protection Detects overheating of the internal
resistor displaying a warning symbol
(
) and automatically halting further
measurements.
Auto power off Automatically switches the instrument
off after a period of approximately 10
minutes.
The Auto power off mode can only be
cancelled by switching the instrument
on again.
BackLight Powered off automatically when 2
min pass after the last operation.
SUBDisplay PFC,PSCandL-NLOOPresistance
values are also measured at LOOP
L-PE test and displayed on the Sub
Display.