koban KRT-01-4P Manual De Instrucciones página 42

KRT-01-4P
DIGITAL EARTH RESISTANCE TESTER
(2) Rotary to function switch to "EARTH VOLTAGE"
position and press to test. Make certain that earth
voltage is less than 10V.
(3) First rotary the function switch to "200 " position
and press to test, read earth resistance. If the
display shows "1"(MSD), switch to "2000
position and read earth resistance.
(4) The reading obtained (Rx) is an approximate earth
resistance value. There is no need for external
shorting as P and C terminals are shorted by using
the test leads specified for the Simplified
measurement.
(5) Rx = Re – re
Rx = True Earth Resistance
Re = Indicated Value
Resistance of Earth Electrode
(6) Since measuring current is as low as 2 mA, the
earth leakage breaker (ELCB) does not trip even if
the earth side of the commercial power supply with
8
re = Earth
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