6-1Voltagemeasurement(Mainsdisconnectioncheck)
(1)ConnecttheEarthprobetotheearthofthecircuitundertestand
Lineprobetotheotherside.Ifthecircuitisnotearthed,connect
Earthprobetoanyappropriateconductor.
(2)TakethereadingontheLCDwithoutpressingtheTestbuttonor
Remotecontrolswitch.Themark"〜" isdisplayedwhen
measuringACvoltage.Themark"− (minus)" isdisplayedwhen
theLINEprobeisconnectedtothenegativesideoftheconductor
undertesttomeasureDCvoltage. "Lo"is displayed on the LCD
whenthemeasuredvoltageisunder20V.
DANGER
¡
Testleadandfusemustbeinspectedpriortomeasurement
accordingtoClause5-2indicatedinthismanualinordertoavoid
possibleelectricalshockhazard.Voltagecannotbemeasuredifa
breakispresentonthefuse.
¡
Never makemeasurementonacircuitinwhichtheelectrical
potentialexceedsAC/DC600V in ordertoavoidpossible shock
hazard.(Referto"3.Specification,ACvoltagemeasurement.")
¡
Whentestinginstallationthathasalargecurrentcapacity,suchas
apowerline,besuretomakemeasurementonthesecondaryside
ofacircuitbreakerinordertoavoidpersonalinjury.
¡
Donot press the TestbuttonorRemotecontrolswitchduring
voltagemeasurement.
¡
Nevershortliveconductorswiththetipofaprobetoavoid
personalinjury.
¡
DonotmakemeasurementwiththeBatterycoverremoved.
6-2Insulationresistancemeasurement
Beforeperforming any insulationtest, checkthe maximum voltage
thatmaybeappliedtothecircuitundertest.
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6.Measurement