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MEGOHMMETER 6505
User Manual
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments certifies that this instrument has been calibrated using standards and instruments traceable to international standards.
We guarantee that at the time of shipping your instrument has met its published specifications.
An NIST traceable certificate may be requested at the time of purchase, or obtained by returning the instrument to our repair and calibration facility, for a nominal charge.
The recommended calibration interval for this instrument is 12 months and begins on the date of receipt by the customer.
Serial #: ________________________________
Catalog #: 2130.18
Model #: 6505
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc. d.b.a AEMC® Instruments
Table of Contents
INTRODUCTION ..................................................................................... 41.1 Symbols ....................................................................................41.2 DefinitionofMeasurementCategories .....................................51.3 ReceivingYourShipment ..........................................................51.4 OrderingInformation .................................................................6
1.4.1 Accessories ..................................................................61.4.2 ReplacementParts .......................................................6
PRODUCT FEATURES ............................................................................. 72.1 Description ................................................................................72.2 ControlFeatures .......................................................................82.3 SwitchFunctions .......................................................................92.4 ButtonFunctions .......................................................................92.5 Display ....................................................................................10
2.5.1 DigitalDisplay .............................................................102.5.2 BargraphDisplay ........................................................102.5.3 DisplaySymbols .........................................................10
SPECIFICATIONS ................................................................................. 113.1 ReferenceConditions .............................................................113.2 Voltage ....................................................................................113.3 InsulationResistance ..............................................................113.4 Capacitance ............................................................................143.5 PowerSupply ..........................................................................153.6 EnvironmentalSpecifications ..................................................153.7 MechanicalSpecifications ......................................................163.8 SafetySpecifications ..............................................................163.9 VariationsinOperatingRange ................................................16
OPERATION ......................................................................................... 174.1 SerialNumber .........................................................................174.2 SoftwareVersion .....................................................................174.3 VoltageMeasurement .............................................................17
4.4 InsulationMeasurement ........................................................184.5 PIMeasurement .....................................................................20
4.5.1 AdjustmentsofthePI ..................................................214.6 AdjustmentoftheVariableTestVoltage .................................224.7 AdjustmentoftheMaximumTestVoltage ...............................224.8 ErrorMessages ......................................................................23
MAINTENANCE ................................................................................... 245.1 RechargingtheBattery ...........................................................245.2 FuseReplacement ..................................................................255.3 Cleaning ..................................................................................255.4 Storage ...................................................................................25
4 Megohmmeter Model 6505
CHAPTER 1
INTRODUCTION
WARNINGThisinstrumentisprotectedagainstaccidentalvoltagesofnotmorethan1000VwithrespecttoearthinmeasurementCategoryIII.Theprotectionprovidedby the instrumentmaybe compromised if it isusedinawaynotspecifiedbythemanufacturer.• Makenomeasurementsonconductorslikelytobeconnectedtoalivesource.
• Complywiththeratedvoltageandmaximumcurrentandthemea-surementcategory.
• Neverexceedtheprotectionlimitsindicatedinthespecifications.• Complywiththeconditionsforuse:temperature,humidity,altitude,degreeofpollutionandplaceofuse.
• Donotuse the instrumentor itsaccessories if theyseemdam-aged.
• Useonly theaccessoriesdeliveredwith theunit,compliantwithsafetystandards(IEC61010-2-031).
• Respectthevalueandtypeofthefuse(see§5.2)toavoiddamag-ingtheinstrumentandvoidingthewarranty.
• SettheswitchtoOFFwhentheinstrumentisnotinuse.• Repairs and metrological verifications must be carried out byapproved,qualifiedpersonnel.
• Weartheappropriateprotectivegear(insulatedboots&gloves).
1.1 Symbols
Signifies that the instrument is protected by double or reinforced insulation.
CAUTION - Risk of Danger! Indicates a WARNING and that the operator must refer to the user manual for instructions before operating the instrument in all cases where this symbol is marked.
Risk of electric shock. The voltage at the parts marked with this symbol may be dangerous.
Megohmmeter Model 6505 5
Ground/Earth
Important instructions to read and understand completely
Important information to acknowledge
Battery
Fuse
USB socket
The CE marking guarantees conformity with European directives and with regulations covering EMC.
The trashcan with a line through it means that in the European Union, the product must undergo selective disposal for the recycling of electric and electronic material, in compliance with Directive WEEE 2002/96/EC.
1.2 Definition of Measurement Categories
CAT II: Formeasurements performed on circuits directly connected totheelectricaldistributionsystem.Examplesaremeasurementsonhouseholdappliancesorportabletools.
CAT III: For measurements performed in the building installation atthe distribution level such as on hardwired equipment in fixedinstallationandcircuitbreakers.
CAT IV: For measurements performed at the primary electrical supply(<1000V) such as on primary overcurrent protection devices,ripplecontrolunits,ormeters.
1.3 Receiving Your ShipmentUponreceivingyourshipment,makesurethatthecontentsareconsistentwiththeorderinginformation.Notifyyourdistributorofanymissingitems.Iftheequipmentappearstobedamaged,fileaclaimimmediatelywiththecarrierandnotifyyourdistributoratonce,givingadetaileddescriptionofanydamage.Save thedamagedpackingcontainer tosubstantiateyourclaim.
6 Megohmmeter Model 6505
1.4 Ordering InformationMegohmmeter Model 6505................................................Cat. #2130.18Includes extra large tool bag, set of 3 color-coded 6 ft leads [5000V] (red, blue, black), set of three color-coded alligator clips 600V CAT IV (red, blue, black), one blue guard terminal jumper lead, fuse 0.1A 380V, rechargeable battery pack (installed), US 115V power cord and user manual.
1.4.1 Accessories
Lead-Setof3,color-coded10ft(5kV)Safetywith 3color-codedalligatorclips(600VCATIV) ......................... Cat. #2119.76
Lead-Setof3,Color-coded10ft(5kV)SafetywithIntegralHippoClips(JUMPER LEAD INCLUDED) ........................... Cat. #2119.85
Lead-Setof3,Color-coded25ft(5kV)SafetywithIntegralHippoClips(JUMPER LEAD NOT INCLUDED) ..................... Cat. #2119.86
Lead-Setof3,Color-coded45ft(5kV)SafetywithIntegralHippoClips(JUMPER LEAD NOT INCLUDED) ..................... Cat. #2119.87
1.4.2 Replacement Parts
Setof3,color-coded6ft(5kV)safetyleads .......................... Cat. #2119.77
1ftjumperlead .................................................................... Cat. #2119.78
Fuse–Setof3,0.1A,380V,5x20,.10kA .......................... Cat. #2119.84
ExtraLargeToolBag ...........................................................Cat. #2133.73
Safetyalligator(red)600VCATIV ......................................Cat. #2140.52
Safetyalligator(black)600VCATIV ...................................Cat. #2140.53
Safetyalligator(blue)600VCATIV .....................................Cat. #2140.54
9.6VrechargeableNiMHbatterypack.................................Cat. #2960.21
PowerCord115VUSPlug ..................................................Cat. #5000.14
Order Accessories and Replacement Parts Directly OnlineCheck our Storefront at www.aemc.com/store for availability
Megohmmeter Model 6505 7
CHAPTER 2
PRODUCT FEATURES
2.1 DescriptionTheMegohmmeterModel6505isaportableinstrumenthousedinaruggedfieldcaseandoperatesoneitherbatteryorlinepower.Itperformsvoltage,insulation,andcapacitancemeasurements.Thisinstrumentcontributestothesafetyofelectricalinstallationsandequipment.FeaturesincludeautomaticcalculationandpresentationoftheDielectricAbsorption Ratio (DAR) and Polarization Index (PI). The Model 6505displays the test voltage, insulation resistance and the leakage currentduringthetest.Capacitanceofthesampleanddischargevoltagepresentatthetestleadsisdisplayedattheconclusionofthetest.TheModel6505isdesignedwiththehighestlevelofbuilt-insafetyfea-tures.Thismeterincorporatestestinhibitcapabilitieswhichwillnotallowtestvoltagestobegeneratedifalivesampleisdetected.Thetesttermi-nalsarerecessedtoensureoperatingsafety.
Features: • Testvoltagecombinationof500V,1000V,2500Vand5000V• Insulationmeasurementsfrom30kΩto10TΩ
• Adjustableandprogrammabletestvoltage(40to5100V)• AutomaticcalculationofDARandPIvalues• DirectmeasurementanddisplayofCapacitanceandLeakage
Current• Displayofresistance,testvoltageandruntime• ProgrammabletestruntimesandPIratiotimes• Automatictestinhibitioniflivesample(>25)• Automaticdischargeanddisplayofdischargevoltage• Largedual-displaywithtime,voltageandmeasurementsshown• Ruggeddualwallweatherprooffieldcase• DesignedandbuilttoIECsafetystandards• EN61010-1,1000VCATIII
8 Megohmmeter Model 6505
2.2 Control Features
( )
FF 0.1A380V - 10kA
5x20mm
110 - 230V50/60 Hz
20 VA max
CALIBRATION
MEGOHMMETERMODEL 6505
1000V CAT III2500V
GDISPLAY
START/STOP(> 2 s : D A R - P I )
1
6
7
5
32 4
OFF
MΩ -1000V
MΩ -2500V
MΩ -5000V
MΩ 50-5000V
SET V VAR
SET V LOCK
MΩ - 500V
Figure 2-1
Item Description
1 Connection terminals “+”, “G” and “-” and access to the protective fuse
2 AC power plug (direct operation on AC and battery recharge)
3 Back-lit liquid crystal display (see § 2.5)
4 Serial interface male plug (9-pin) for calibration only
5 Rotary selector switch with 8 positions (see § 2.3)
6 START/STOP button
7 Two function buttons (see § 2.4)
Megohmmeter Model 6505 9
2.3 Switch Functions
Range Function
OFF Instrument powered down
MΩ - 500V Insulation measurement at 500V, up to 2TΩMΩ - 1000V Insulation measurement at 1000V, up to 4TΩMΩ - 2500V Insulation measurement at 2500V, up to 10TΩMΩ - 5000V Insulation measurement at 5000V, up to 10TΩ
MΩ - 50-5000V Insulation measurement with variable test voltage
SET VVARSets the user definable test voltage for the variable 50-5000V position
SET VLOCKSets the user definable maximum test voltage output irrespective of the insulation measurement positions
2.4 Button Functions
Button Function
ON/OFFThis button is pressed to start then stop the measurement.A long press starts the measurement of the DAR and of the PI.
DISPLAYBefore, during or after the measurement, pressing this key displays the various measurement parameters.
This function is available only in the SET positions of the switch. Increases the flashing parameter being displayed. To move about the list of interval insulation measurements, in the R(t) function.
This function is available only in the SET positions of the switch. Decreases the flashing parameter being displayed. To move about the list of interval insulation measurements in the R(t) function.
NOTE: If theandbuttonsarehelddown, themovementbetweenparametersisincreasedtoafasterrate.
10 Megohmmeter Model 6505
2.5 Display
2.5.1 Digital Display
Main DisplayIndicatesthevalueof:• Insulationmeasurement(resistance,DARandPIorcapacitance).
Small DisplayIndicates:• Voltagemeasuredorappliedbytheinstrument.• Elapsedtimeortheoutputvoltage,duringinsulationmeasurement.
2.5.2 Bargraph Display
Indicates:• Activeduringinsulationmeasurement(0.1MΩto1TΩ).• Indicatesthebatterychargeatstart-up.
2.5.3 Display Symbols
Dangerous voltage generated; V >120V.
External voltage present, symbol is activated after pressing START, if V >25VAC ± 3V or > 35VDC.Indicates the duration of the measurement, or the time remaining in the case of a PI measurement.Indicates the battery is low and must be recharged (see § 5.1).
Megohmmeter Model 6505 11
CHAPTER 3
SPECIFICATIONS
3.1 Reference ConditionsInfluence Quantity Reference Values
Temperature 23 ± 3°CRelative humidity 45 to 55% RHSupply voltage 9 to 12VFrequency range DC and 15.3 to 65HzCapacity in parallel on resistor 0µFElectrical field nilMagnetic field < 40 A/m
3.2 Voltage
Measurement Range 1.0 to 99.9V 100 to 999V 1000 to 2500V 2501 to 5100V
Frequency Range* DC and 15 to 500Hz DC
Resolution 0.1V 1V 2V 2V
Accuracy1% of Reading
± 5cts1% of Reading ± 3cts
Input Impedance 750kΩ at 3MΩ depending on measure voltage
*Over 500Hz, the small display indicates “- - - -” and the main display gives only an assessmentof the peak value of the measured voltage.
3.3 Insulation ResistanceMethod: Voltage-currentmethodaccordingtoEN61557-2(ed.02/97)Nominal Output Voltage:500,1000,2500,5000VDC(oradjustablefrom40to5100V)
No Adjustment in Variable Mode: 10Vfrom40to1000V100Vfrom1000to5100V
Nominal Current:>1mADC
12 Megohmmeter Model 6505
Short-circuit Current: <1.6mA±5%
Load Current: 3mADCapproxwhenstartingmeasurement
Max. Acceptable Voltage: Upeak=0.4Un
TestVoltage
500V - 1000V - 2500V - 5000V
Range10 to 999kΩ
1.000 to 3.999MΩ 4.00 to 39.99MΩ 40.0 to 399.9MΩ 0.400 to 3.999GΩ
Resolution 1kΩ 10kΩ 100kΩ 1MΩ
Accuracy ±5% of Reading + 3cts
TestVoltage
500V - 1000V - 2500V - 5000V1000V - 2500V
5000V2500V5000V
Range4.00 to
39.99GΩ40.0 to
399.9GΩ0.400 to 1.999TΩ
2.000 to 3.999TΩ
4.00 to 9.99TΩ
Resolution 10MΩ 100MΩ 1GΩ 10GΩ
Accuracy ±5% of Reading + 3cts ±15% of Reading + 10cts
Accuracy in variable modeRmeasured=Un/250pA
Test voltage 40 to 160V 170 to 510V 520 to 1500V 1600 to 5100V
R measured min 10kΩ 10kΩ 10kΩ 10kΩ
R measured max160.0GΩ to 640.0GΩ
640.0GΩ to 2.040TΩ
2.080TΩ to 6.000TΩ
6.400TΩ to 10.00TΩ
Toobtaintheaccuracyinvariablevoltagemode,calculatefromtheaccuraciesofthefixedvoltagesabove.
Measurement of the test voltage after a capacitive insulation measurement
Measurement Range 25 to 5000V
Resolution 0.2% Un or 1ct
Accuracy 5% of Reading ± 3cts
Megohmmeter Model 6505 13
Calculation of terms DAR and PI
Specified Range 0.02 - 50.00
Resolution 0.01
Accuracy 5% of Reading ± 1ct
Typical change curve for test voltages according to load:
Range 500V
600
V
500
400
300
200
100
00.01 0.1 1 MΩ
Range 1000V
1200
V
1000
800
600
400
200
00.1 1 MΩ
14 Megohmmeter Model 6505
Range 2500V
3000
V
2500
2000
1500
1000
500
00.1 1 10 MΩ
Range 5000V
6000
V
5000
4000
3000
2000
1000
00.1 1 10 MΩ
3.4 CapacitanceThismeasurement ismadeattheendofeachinsulationmeasurement,whilethecircuitisbeingdischarged.
Measurement Range 0.001 to 9.999 µF 10.00 to 49.99 µF
Resolution 1 nF 10 nF
Accuracy 10% of Reading ± 1ct 10%
Megohmmeter Model 6505 15
3.5 Power Supply• 9.6VrechargeableNiMHbatterypack• LineVoltage:85to256V/50-60Hz
Minimum Battery Charge Life(perNFEN61557-2)
Test Voltage Nominal ChargeNumber of Measurements
5s on nominal charge (with 25s pause between each measurement)
500V 500kΩ 6500
1000V 1MΩ 5500
2500V 2.5MΩ 4000
5000V 5MΩ 1500
Average Battery Life:Theoperatingtimewillbe15daysor3weeks,basedupona10minutelongPImeasurement.Recharge Time:Chargingmustbedonebetween20and30°C6hoursfor100%capacity(10hoursifthebatteryiscompletelydrained)0.5hoursfor10%capacity(chargelife:2daysapproximately)
NOTE: It is possible to recharge the batteries while performing insulation measurements provided that the values measured are higher than 20MΩ. In this case, the recharging time is higher than 6 hours and depends on the frequency of the measurements.
3.6 Environmental SpecificationsOperating Range: 14°to104°F(-10°to40°C)duringrechargingofbatteries 14°to131°F(-10°to55°C)duringmeasurement10to80%RHStorage:-40to158°F(-40to70°C);10to90%RHAltitude:<2000mUseindoorsoroutdoors
16 Megohmmeter Model 6505
3.7 Mechanical SpecificationsCase Dimensions:10.63x9.84x7.09"(270x250x180mm)
Weight:9.5lbs(4.3kg)approx.Mechanical ProtectionIP53perNFEN60529(Ed.92)IK04perNFEN50102(Ed.95)
3.8 Safety SpecificationsElectricalsafetyaccordingtoEN61010-1(Ed.2for2001),EN61557(Ed.2005)
1000V CATIII PollutionDegree2
Electromagnetic Compatibility:NFEN61326-1(Ed.97)+A1,industrialenvironmentcategory
3.9 Variations in Operating Range
InfluentialQuantity
Range ofInfluence
QuantityInfluenced*
Influence
Typical Max.
BatteryVoltage
9V to 12VV
MΩ<1ct<1ct
2cts3cts
Temperature -10° to +55°CV
MΩ0.15% R/10°C0.20% R/10°C
0.3% R/10°C ± 1ct1% R/10°C ± 1ct
Humidity 20 to 80% RHV
MΩ (10kΩ to 40GΩ)MΩ (40GΩ to 10TΩ)
0.2% R0.2% R3% R
1% R ± 2cts1% R ± 5cts
15% R ± 5cts
Frequency 15 to 500Hz V 0.3% R 0.5% R ± 1ct
AC voltagesuperimposedon test voltage
0% to 20% Vn MΩ 0.1% R / % Vn0.5% R / % Vn
± 5cts
*The terms DAR, PI and the capacity and current leak measurements are included in the quantity “MΩ”.
Megohmmeter Model 6505 17
CHAPTER 4
OPERATION
Charge the instrument fully before use (see § 5.1)
4.1 Serial NumberToview theserialnumberof the instrument, keep theDISPLAYbuttonpressedandturntheswitchtotheMΩ-500Vposition.
4.2 Software VersionToviewtheinternalsoftwareversionoftheinstrument,keeptheDISPLAY buttonpressedandturntheswitchtotheMΩ-1000Vposition.
Technical documentation on Understanding Insulation Resistance Testing is available on our website at www.aemc.com/resources.
4.3 Voltage MeasurementAssoonastheswitchissettoaninsulationmeasurementposition,theinstrumentautomaticallymeasuresthepresenceofanyAC/DCvoltage.Thisvoltageismeasuredatalltimesandindicatedonthesmalldisplayunit.
TheinstrumentautomaticallydeterminesACorDC.TheACmeasurementisanRMSvalue.
Ifanexcessivelyhighexternalvoltageispresentontheterminals(>0.4Un), pressing theSTART/STOP buttonhasnoeffect andnomeasure-mentsaremade.Similarly,ifanexcessivelyhigherroneousvoltage(>0.4Un)isdetectedduringthemeasurement,themeasurement isautomati-callystopped.
18 Megohmmeter Model 6505
4.4 Insulation Measurement Dependingon themeasurements to bemade, there are threeways toconnecttheinstrument.
Inallcases,disconnectthedevicetobetestedfromthesource.Weak InsulationConnecttheredhigh-voltageleadbetweenearthandthe+terminaloftheinstrument.Connecttheblackhigh-voltageleadbetweenonephaseofthemotorandthe -terminaloftheinstrument.
M+
-
Strong InsulationForaveryhighinsulationvalue,connectthesmallbluehigh-voltageleadbetweentherearearthpick-upjackoftheblackleadandtheG terminaloftheinstrument.Thisservestoreduceanyexternalinfluenceandobtainamorestablemeasurement.
M+
-G
CableConnecttheredhigh-voltageleadbetweenthebraidandthe+terminaloftheinstrument.Connecttheblackhigh-voltageleadbetweenthecoreandthe-terminaloftheinstrument.
G
-
+
ExteriorInsulation
Braid
Insulation Core
Connectthebluehigh-voltageleadbetweentheinsulationandtheG terminaloftheinstrument.Theguardservestoeliminatetheeffectofsurfaceleakagecurrents.
Megohmmeter Model 6505 19
Oncetheconnectionshavebeenmade,choosethedesiredtestvoltageontherotaryswitch.
Whenpoweredup,theinstrumentdisplaysthefollowing:• Conditionofthebattery• Testvoltage• Voltagepresentontheobjecttobetested
• PresstheSTART/STOPbuttontostartthemeasurement.
• Duringmeasurements, the instrumentwillbeepevery10seconds toalerttheuserthatahighvoltageispresent.
• Press theSTART/STOPbuttonagain tostop themeasurement.Theinstrumentcontinuestomeasureexternalvoltagesbut the test resultremainsdisplayedonthemaindisplayunit.
To ensure your safety, the instrument will automatically discharge the circuit under test, allow for the voltage displayed to fall back below 25V before disconnecting the leads.
Press the DISPLAY button to display:
Before the measurement(2 presses)
• voltage present on the device to be tested• test voltage• surface leakage current
During the measurement(2 presses)
• test voltage• instantaneous insulation resistance value• duration of the measurement• current flowing in the resistance being measured
After the measurement(5 presses)
• voltage present on the device tested• insulation resistance value just before the
measurement was stopped• duration of the measurement• test voltage generated during the measurement• current that flowed in the resistance measured• surface leakage current• capacitance
20 Megohmmeter Model 6505
4.5 PI Measurement
MΩ -1000V MΩ -1000V
• Settheswitchtooneoftheinsulationmeasurementpositions.
• Startthemeasurementbyalongpress(>2s)ontheSTART/STOPbutton.Thelongpressisacknowledgedbyanaudiblebeep.
• Themeasurementstartsthedefaultdurationof10min.Acountdowndisplaysthetimeremaining.Themeasurementstopsautomatically.
Press the DISPLAY button to display:
Before the measurement(2 presses)
• voltage present on the device to be tested• test voltage• leakage current present
During the measurement(4 presses)
• measurement time remaining• instantaneous insulation resistance value• test voltage• current flowing in the resistance being measured• value of PI (available at the end of 10 minutes)• value of DAR (available at the end of one minute)
After the measurement(6 presses)
• test voltage generated during the measurement• PI and DAR• duration of the measurement• insulation resistance value just before the
measurement was stopped• current that flowed in the resistance measured• voltage present on the device being tested• capacitance• surface leakage current
The values of PI and DAR are calculated as follows:PI=R10min /R 1min(2values toberecordedduringameasurementlasting10min)*DAR=R1min/R 30 sec (2valuestoberecordedduringameasurementlasting1min)
*For the calculation of the PI, the times of 1 and 10 minutes can be modified by the user, ifrequired, for a particular application. See § 4.5.1.
Megohmmeter Model 6505 21
Theyareespeciallyuseful formonitoring theageingof the insulationofrevolvingmachinesorofverylongcables.
Onitemsofthistype,themeasurementisinitiallyperturbedbyspuriouscurrents (capacitive charging current, dielectric absorption current) thatgradually cancelout.Tomeasure the leakagecurrent representativeoftheinsulationaccurately,itisthereforenecessarytomakemeasurementsoflongduration.
Thequalityoftheinsulationisafunctionoftheresultsfound.
DAR PI Condition of the Insulation
< 1.25< 1
Inadequate or even dangerous< 2
< 1.6 < 4 Good> 1.6 > 4 Excellent
4.5.1 Adjustments of the PI
ItispossibletomodifythePItimestomeetspecificneeds.
Reminder:PI=R10min/R 1min
ThefirstPItimeis1min.Itcanbesettovaluesfrom30secto30minin30secsteps.
• PressandholdtheDISPLAYbuttonandturntherotaryswitchtotheSET VVAR position.HoldtheDISPLAYbuttonuntilPI_1appearsinthedisplay.
• YoucanchangethefirstPItime(PI_1)usingtheandbuttons.
• Tosavechangessimply,turntheswitch.
• ThesecondPItime(PI_2)is10min.ItcanbesettovaluesfromPI_1upto59minin1minsteps.
• PressandholdtheDISPLAYbuttonandturntherotaryswitchtotheSET V LOCK position.
• YoucanmodifythesecondPItimeusingtheandbuttons.
• Tosavechangessimply,turntheswitch.
22 Megohmmeter Model 6505
4.6 Adjustment of the Variable Test Voltage
SET V VAR SET V VAR
MΩ 50-5000V MΩ 50-5000V
Thisfunctionmakesitpossibletousetestvoltagesotherthanthe4presetvaluesof500,1000,2500and5000.
• SettheswitchtoSET VVAR.
• Thetestvoltageflashes.
• Changethetestvoltageusingtheandbuttons.
• SettheswitchtoMΩ 50-5000Vtomakethemeasurement.
• Thisvalueisretainedinanon-volatilememory.
4.7 Adjustment of the Maximum Test VoltageTheusercansetamaximumgeneratedvoltagetopreventanyaccidentalover-voltagetestsbeingconductedinerror.
SET V LOCK SET V LOCK • SettheswitchtoSET VLOCK.
• Themaximumtestvoltageflashesandcanbeadjustedusingtheandbuttons.
• Turntheswitchtoaninsulationmeasurementsettingtomakemeasurements.
• Themaximumtestvoltagevalueisretainedin anon-volatilememory.Itwillbedisplayedfora fewsecondsonselectionofanaffectedrange (e.g.ifthemaximumvoltageis750V,itwillbe appliedanddisplayedonallswitchsettings from1000Vup).
Megohmmeter Model 6505 23
4.8 Error Messages
0.1M 1M 10M 100M 1G 10G 100G 1T
V
0.1M 1M 10M 100M 1G 10G 100G 1T
V
VAC
VAC
• Theinsulationresistanceistoolow.• Checkyourconnections.The+and
-terminaloftheinstrumentmaybeshort-circuited.
• Theinsulationresistanceisoutsidethemeasurementrange.
• Checkyourconnections.Oneoftheterminalsoftheinstrumentmaybedisconnectedorthevaluemeasuredis>4TΩ.
• Thevoltagepresentontheterminalsisgreaterthan25VACor35Vpeak.
• Theinstrumentalertsyoubutdoesnotpreventmakingthemeasure-ment.
• Thevoltagepresentontheterminalsistoohighforameasurementtobemade:peakV>0.4UnThetestvoltage,Un,isindicatedbythesettingoftheswitch.
• Eliminatethevoltageandrestartthemeasurement.
• IndicatesthattheprotectivefuseoftheGterminalisdefective.
• Replacethefuseasindicatedin§ 5.2.
24 Megohmmeter Model 6505
CHAPTER 5
MAINTENANCE
Use only factory specified replacement parts.AEMC® will not be heldresponsible for anyaccident, incident, ormalfunction followinga repairdoneotherthanbyitsservicecenterorbyanapprovedrepaircenter.
5.1 Recharging the BatteryIfthe symboldisplays,thebatteryneedstoberecharged.
Connect the instrument to the 115VAC power cord via the connector(chargingstartsautomatically).
• bAtonthesmalldisplayandchrGonthemaindisplaysignifiesfastcharginginprogress.
• bAtonthesmalldisplayandchrGflashingonthemaindisplaysignifiesslowcharging.
• bAtonthesmalldisplayandFULLonthemaindisplaysignifiesthatchargingiscomplete.
If the instrument is startedupand thebattery voltage is>8V, then thenormaluseofthedeviceispermitted.
NOTE: The battery should only be changed by an authorized repair facility recognized by AEMC® Instruments.
Megohmmeter Model 6505 25
5.2 Fuse ReplacementIfFUSE -G-flashesonthedisplay,thefusemustbereplaced,takingallthenecessaryprecautionswhenopeninguptheinstrument.
Make sure that none of the terminals are connected and that the selector switch is set to OFF.
• Thefuseislocatedontheleftsideofthefaceplate,indicatedbythe symbol.
• Usingacoinoraflatheadscrewdriver,unscrewthefuseholderandremovethefuse.
• Onlyreplacewiththetypeoffusespecifiedonthelabelinsidetheunit’scover:0.1A-FastActing-380V,5x20mm,10kA
NOTE: IfafterchangingthefusethedisplaystillindicatesFUSE -G-,theinstrumentmustbereturnedtothefactoryforservicing.
5.3 Cleaning
Disconnect the instrument from any source of electricity.
Useasoftcloth lightlydampenedwithsoapywater.Rinsewithadampclothandthendrywithadrycloth.Donotusealcohol,solventsorhydrocarbons.
5.4 StorageIftheinstrumentisnotusedforanextendedperiodoftime,it isrecom-mendedtochargetheinstrumenteverytwoorthreemonths.
02/18
99-MAN100339v12
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments