User's Manual

MG500-EU-EN v1.0 7/13
7
Operation
Poweringthemeter
PresstheONbuttontoturntheuniton.Pressthe OFFbuttontoturntheunitoff.Ifthemeter
doesnotswitchONpleasecheckthatfresh‘C’1.5Valkalinebatteriesareinstalledinthebattery
compartmentlocatedatthebottomoftheinstrument.

InsulationResistanceTestingProcedure

Warning:Thecircuitundertestmustbecompletelyde‐energizedandisolatedbeforemaking
testconnections.

1. After turning the unit on, make sure that the Replace Battery messageis not displayed.If
theReplaceBatterymessageisdisplayedreplacethebatteriesbeforeproceeding.
2. The test voltage defaults to
2500V on power up. Select the desired test voltage using the
Voltage Adjust buttons (±500V) that step through the available test voltages in 500V
incrementsorbypressingoneofthepresettestvoltagebuttons(10kV,5kV,2.5kV,1Kv).
3. ThedisplayshowstheConnectLeadspromptalongwiththeselected
testvoltagevalue.
ConnecttheGreentestleadtotheGreentestsocketonthemeterandthentotheGround
sideoftheinsulatorundertest.
Connectthe Red lead to the Red testsocketon the meter and the Blue guard cable to the
blue socket on the
meter.Connect the service end of the Red cable to other side of the
insulatorundertest.
IfaLeakageGuardleadisrequiretocollect surfaceleakage,connectthe separateBluetest
lead into the Blue guard lead from the Red test lead which is plugged into the Blue test

socketonthemeterandthencliptheserviceendofthecabletothesurfaceoftheinsulator
undertest.
4. MomentarilyPresstheTESTSTART/STOPbuttontostarttesting.
ForDARorPItesting–refertotheseparatetestprocedurebelow.
5. The Insulation resistance test will
complete in 10 seconds.The test voltage percentage
steadily counts down to zero during the test as can be seen on the display. The resistance
testresultvaluewillappearonthedisplaywhenthetesthascompleted.
6. TheHOLDiconwillappearinplaceofthebargraphwhenthe
testiscompleteandafterthe
voltagehasbeendischarged.
WARNING:DONOTREMOVETHETESTLEADSBEFORETHEHOLDDISPLAYAPPEARS.
7. Themeterautomaticallydischargesthesystemattheendofthetest.
8. Totakeanothertest,presstheTESTSTART/STOPbutton,theConnectLeadspromptshould
appearonthedisplay;theinstrumentisnowreadytorunanewtest.
9. Theinstrumentautomaticallypowersdownafter5minutesofinactivity.