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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.

KYORITSU KEW3125A User Manual

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