KYORITSU KEW3125A - Measurement - Insulation Resistance; Insulation Resistance Measurement Procedure

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6-2 Insulation resistance measurement
#DANGER
●Useameasuringapparatus,suchashighvoltagedetector,
andconfirmthatthereisnoelectricalchargeinthecircuit
undertest.
●Wearapairofinsulatedglovesforhighvoltage.
●
IftheRangeswitchisattheinsulationresistancerangeand
the Test button is being pressed down, high voltages are
generatedandappliedtothetestleadsandthecircuitunder
testcontinuously.Donottouchthecircuitorthetestleads.
●The Battery cover must be closed and screwed before
startingameasurement.
●Nevermakemeasurementwhenthunderrumbling.
●ConnecttheEarthCord(black)totheearthterminalofthe
circuitundertest.
●When any modes other thanVOLTis selected, live
circuitwarningsymbolappearsontheLCDandtheaudible
warningactivatesifavoltageof30Vorhigherismeasured.

KEW3125A/3025Adontstartatest,eventheTestbutton
ispresseddown,ifthemeasuringvoltageis160Vorhigher.
Beforestartingatest,ensurethattheequipmentundertest
is disconnected from the mains supply and not energized
in order to avoid possible electrical hazards. These
instrumentsmaystartatestforenergizedelectricalcircuits
ifthemeasuringvoltageislessthan160V.
●Keep your fingers and hands behind the protective
fingerguardduringmeasurement.
This instrument measures insulation resistances and check
whether the insulations of electrical equipments or circuits are
in good condition or not. So, please check the voltage that
can be applied to the equipment under test before making a
measurement.
Note)
●Theinsulationresistancevaluesoftheequipmentsundertest
maynotbestable,andthereadingsmaybeunstable.
●Bleep sound may be heard during an insulation resistance
measurement,butitisnotmalfunction.
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