5070 - aemc instruments · megohmmeter model 5070 7 chapter 2 product features the model 5070...

MEGOHMMETER 5070

E N G L I S H 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. For recalibration, please use our calibration services. Refer to our repair and calibration section at www.aemc.com.

Serial #: ________________________________

Catalog #: 2130.30

Model #: 5070

Please fill in the appropriate date as indicated:

Date Received: _________________________________

Date Calibration Due: _______________________

Chauvin Arnoux®, Inc.d.b.a AEMC® Instrumentswww.aemc.com

Megohmmeter Model 5070 1

Table of Contents

1. INTRODUCTION ................................................................................. 41.1 International Electrical Symbols ...........................................................5

1.2 DefinitionofMeasurementCategories .................................................5

1.3 ReceivingYourShipment .....................................................................5

1.4 OrderingInformation ............................................................................61.4.1 AccessoriesandReplacementParts ......................................6

1.5 AccessoryInformation..........................................................................61.5.1 DataView®Software ................................................................6

2. PRODUCT FEATURES ......................................................................... 72.1 ControlFeatures ..................................................................................8

2.2 DisplayFeatures ................................................................................10

3. SPECIFICATIONS ............................................................................. 113.1 ReferenceConditions.........................................................................11

3.2 Voltage ...............................................................................................11

3.3 InsulationResistance .........................................................................11

3.4 PowerSupply .....................................................................................16

3.5 EnvironmentalSpecifications .............................................................17

3.6 MechanicalSpecifications ..................................................................17

3.7 SafetySpecifications ..........................................................................17

3.8 VariationsinOperatingRange ...........................................................18

4. SPECIAL FUNCTIONS ....................................................................... 194.1 SET-UPFunction ...............................................................................19

4.1.1 DefaultConfigurations ..........................................................194.1.2 InstrumentConfigurationParameters ...................................204.1.3 SET-UPMenu .......................................................................27

4.2 MODE/PRINTButton .......................................................................284.2.1 PrimaryFunction-MODE .....................................................284.2.2 SecondaryFunction-PRINT ................................................32

2 Megohmmeter Model 5070

4.3 DISPLAY/GRAPHButton .................................................................334.3.1 PrimaryFunction-DISPLAY .................................................334.3.2 SecondaryFunction-GRAPH ..............................................46

4.4 Left/TEMPButton .............................................................................464.4.1 PrimaryFunction-Left .........................................................464.4.2 SecondaryFunction-TEMP .................................................46

4.5 Down/SMOOTHButton ....................................................................484.5.1 PrimaryFunction-Down ......................................................484.5.2 SecondaryFunction-SMOOTH ...........................................48

4.6 Up/ALARMButton ............................................................................494.6.1 PrimaryFunction-Up ...........................................................494.6.2 SecondaryFunction-ALARM...............................................49

4.7 Right/BacklightButton ......................................................................494.7.1 PrimaryFunction-Right .......................................................494.7.2 SecondaryFunction-Backlight ............................................49

4.8 MEM/MRButton ...................................................................504.8.1 PrimaryFunction-MEM(Save) ............................................504.8.2 SecondFunction-MR(Recall) .............................................51

4.9 ClearingtheMemory ..........................................................................52

4.10 CalculationofΔTfromStoredData ....................................................53

4.11 MaximumOutputVoltage ...................................................................54

4.12 ListofErrorCodes .............................................................................54

5. MEASUREMENT FUNCTIONS ........................................................... 555.1 AC/DCVoltage ...................................................................................55

5.2 InsulationMeasurement .....................................................................55

5.3 CapacitanceMeasurement ................................................................58

5.4 ResidualCurrentMeasurement .........................................................58

6. OPERATION ..................................................................................... 596.1 PerformingMeasurements .................................................................59

6.2 StepFunctionMode ...........................................................................60

6.3 OperationExamples...........................................................................62


6.4 PrintingMeasuredValues(MODE/PRINTButton) ....................64

6.5 InstantaneousPrintingofMeasurements(PrintResult) ................64

6.6 PrintingDatainMemory(PrintMemory) ....................................67

7. DATAVIEW® SOFTWARE ................................................................... 717.1 InstallingDataView® ...........................................................................71

7.2 MegohmmeterControlPanel .............................................................73

8. MAINTENANCE ................................................................................ 748.1 RechargingtheBattery ......................................................................74

8.2 FuseReplacement .............................................................................75

8.3 Cleaning .............................................................................................75

8.4 Storage...............................................................................................75

APPENDIX A: UTILIZING THE GUARD TERMINAL .................................. 76

APPENDIX B: SERIAL CABLE REQUIREMENTS ..................................... 78

APPENDIX C: V DISTURBANCE/V OUTPUT FEATURE ............................ 79RepairandCalibration.................................................................................80

TechnicalandSalesAssistance ..................................................................80

LimitedWarranty .........................................................................................81

WarrantyRepairs ........................................................................................81


CHAPTER 1

INTRODUCTION

WARNING

Thesesafetywarningsareprovidedtoensurethesafetyofpersonnelandproperoperationoftheinstrument.

• Donotattempttoperformanytestswiththeseinstrumentsuntilyouhavereadtheinstructionmanual.

• Safetyistheresponsibilityoftheoperator!

• Tests are to be carried out only on non-energized circuits!Checkforlivecircuitsbeforemakingresistancemeasurements(SafetyCheck).

• High voltage is present, as is the sample connected to it.Anyoneperformingorassistingintestingmustfollowallsafetyprecautions topreventelectrical shock to themselvesand toothers.

• Usepersonalprotectiveequipmentwhereappropriate.

• Whentestingsampleswithacapacitivecomponent,makesurethey have been properly discharged and are safe to touch.Dielectric insulation samples should be short-circuited for atleastfivetimestheamountoftimetheywereenergized.

• Megohmmetersshouldneverbeusedinanexplosiveenviron-ment.

• Onlyusetheleadsthataresuppliedwiththemegohmmeter.Iftheyaredefectiveorworn,replacebeforetesting.

• This instrumentcanbeusedon installationsratedfor1000VCATIIIor2500VCATI.


1.1 International Electrical Symbols

This symbol signifies that the instrument is protected by double or reinforced insulation.This symbol on the instrument indicates a WARNING and that the operator must refer to the user manual for instructions before operating the instrument. In this manual, the symbol preceding instructions indicates that if the instructions are not followed, bodily injury, installation/sample and product damage may result.Risk of electric shock. The voltage at the parts marked with this symbol may be dangerous.

In conformity with WEEE 2002/96/EC

1.2 Definition of Measurement CategoriesCAT IV: Formeasurementsperformedattheprimaryelectricalsupply(<1000V)

suchasonprimaryovercurrentprotectiondevices,ripplecontrolunits,or meters.

CAT III: Formeasurementsperformedinthebuildinginstallationatthedistributionlevel such as on hardwired equipment in fixed installation and circuitbreakers.

CAT II: For measurements performed on circuits directly connected to theelectricaldistributionsystem.Examplesaremeasurementsonhouseholdappliancesorportabletools.

1.3 Receiving Your Shipment• Matchthecontentswiththeorderinginformation.• Notifyyourdistributorofanymissingitems.• If the equipment appears to be damaged, file a claim immediately with the

carrierandnotifyyourdistributoratonce.

NOTE: Charge the instrument fully before use.


1.4 Ordering InformationMegohmmeter Model 5070.............................................................Cat. #2130.30Includes extra large tool bag, set of three 10 ft (5kV) leads (red/black/blue) with integral hippo clips (5000V), one guard terminal jumper lead, RS-232 DB9 F/F 6 ft null modem cable, RS-232 to USB adapter, US 115V power cord, rechargeable battery pack, and a USB stick with DataView® software and user manual.

1.4.1 Accessories and Replacement Parts

Cable,PCRS-232,DB9F/F6ftNullModemCable ........................ Cat. #2119.45

Setof3,color-coded10ftsafetyleads(5000V),3color-coded alligatorclips(600VCATIV) ............................................................. Cat. #2119.76

Lead–Replacement1ftjumperlead............................................... Cat. #2119.78

Fuse,setof3,0.1A,380V,5x20,.10kA ......................................... Cat. #2119.84

ReplacementLead–Setof3,Color-coded10ft(5kV)Safetywith IntegralHippoClips(JUMPER LEAD INCLUDED) .................................... Cat. #2119.85

Lead–Setof3,Color-coded25ft(5kV)Safetywith IntegralHippoClips(JUMPER LEAD NOT INCLUDED) ............................. Cat. #2119.86

Lead–Setof3,Color-coded45ft(5kV)Safetywith IntegralHippoClips(JUMPER LEAD NOT INCLUDED) ............................. Cat. #2119.87

ExtraLargeClassicToolBag ...........................................................Cat. #2133.73

Inverter–12VDC to 120VAC200WattforVehicleuse ......................Cat. #2135.43

Battery–Rechargeable9.6V ...........................................................Cat. #2960.21

US115VPowerCord .......................................................................Cat. #5000.14

Adapter–RS-232toUSB2.0 ..........................................................Cat. #5000.60

1.5 Accessory Information

1.5.1 DataView® SoftwareDataView®softwaremakesitpossibleto:

• Retrievedatafrommemoryandplotgraphsofthechangesininsulationasafunctionofthetimeoverwhichthetestvoltageisapplied,R(t).

• Printoutprotocolsofpersonalizedtests,dependingontheuser’sneeds.• Createtextfilesforuseonspreadsheets.• SetupandcontroltheinstrumententirelybytheRS-232.


CHAPTER 2

PRODUCT FEATURES

TheModel5070megohmmeterisatop-of-the-linemeasuringinstrument,portable,inaruggedhousingwithagraphicdisplay.Itiscapableofoperatingfrominternalbatteryorlinepower.

Main Functions:• Automatic detection and measurement of voltage/frequency/input cur-

rent• Quantitativeandqualitativeinsulationmeasurement

− Measurement at 500/1000/2500/5000VDC or other test voltagebetween 40 and 5100VDC(adjustablevoltage)

− Measurementinvoltagestepmode(theappliedvoltageincreasesinsteps)

− AutomaticcalculationofDAR/PIandDD(dielectricdischargeindex)qualityratios

− Automaticcalculationofmeasurementresultreferredtoareferencetemperature

• Automaticcapacitancemeasurement• Automaticmeasurementofresidualcurrent

Thismegohmmeterhelpsensurethesafetyofelectrical installationsandequip-ment. Theoperation iscontrolledbyamicroprocessor fordataacquisition,pro-cessing,anddisplayofmeasurementsandthestorageandprintingofresults.

Advantages:

• Digitalfilteringofinsulationmeasurements• Automaticvoltagemeasurement• Automatic detection of external AC or DC voltages on the terminals,

beforeorduringinsulationmeasurements,disablingorstoppingthemea-surementswhenmeasurementaccuracyisnolongerguaranteed

• Thresholdprogrammingtotriggeraudiblealarms• Timerformeasurementtimechecks• Fuseprotectionoftheinstrumentwithdetectionanddisplayofdefective

fuses• Operatorsafetybyautomaticdischargeofresidualhighvoltageonthe

equipmenttested


• Automaticshutdownoftheinstrumenttosavebatterypower• Batterychargeindication• Largebacklitgraphicdisplaythatisveryeasytoread• Memory(128KB),realtimeclock,andserialinterface• ControlandprogrammingoftheinstrumentfromaPC (usingDataView®software)• Directprintingwithaserialprinter(optionalaccessory-Cat.#2140.21)

2.1 Control Features

1

7

2

8

6

43 5

1. Safetyterminals:“+”,“G”and“-”

2. Protectivefuseaccess

3. ACpowerplug(directoperationonACandbatteryrecharge)

4. Back-litliquidcrystaldisplay

5. RS-232serialinterfacemaleplug(9-pin)• ForconnectiontoaPCorprinter

6. Rotaryselectorswitchwith8positions:• OFF-Instrumentisoff


• MΩ - 500V-Insulationmeasurement(to2TΩ)• MΩ - 1000V-Insulationmeasurement(to4TΩ)• MΩ - 2500V-Insulationmeasurement(to10TΩ)• MΩ - 5000V-Insulationmeasurement(to10TΩ)• MΩ 50V - 5000V-Insulationmeasurementwithselectabletestvoltage

(from40V to 5100V: 10V steps from40V to 1000Vand100V steps1000Vto5000V)

• Step Voltage -Insulationmeasurementwithvoltagestepfunction(upto5stepscanbeconfigured)

• SET-UP-Userprogrammingofthemegohmmeterconfiguration

7. START/STOPbutton(startsandstopsmeasurements)

8. Eightbuttons,eachwithaprimaryandsecondary function.Thesecondaryfunctionsarehighlightedinyellowitalicsbeloweachbutton:

• 2nd (yellow button)-Selectsthesecondfunctiononeachbutton.

• -Selectsafunctionorincrementstheparameteronwhichthecursorispositioned.Pressingandholdingthekeyincreasestherateofchangeoftheparameter.

ALARM - ActivatesordeactivatesthealarmsprogrammedinSET-UP.

• -Selectsafunctionordecrementstheparameteronwhichthecursorispositioned.Pressingandholdingthekeyincreasestherateofchangeoftheparameter.

SMOOTH-Stops/startssmoothingofdisplayedvaluesduringtesting.

• -Selectsaparametertobemodifiedtotheleft. TEMP - activates temperature correction of themeasurement to the

referencetemperatureprogrammedinSET-UP.

• -Selectsaparametertobemodifiedtotheright.

-TurnsthedisplaybacklightONorOFF.

• MEM-Savesmeasuredvalues. MR - Recalls saved data.

• MODE-Beforestartingatest,themodefunctionallowsselectionofruntime,samplerate,DARPIandratiotimes.

PRINT-directprintingoftestresult(s)onaserialorparallelprinter.

• DISPLAY - Browses through the various screens accessible before,duringandafterthemeasurement.

• GRAPH-Aftera“timedrun”,theGraphmodedisplaysinsulationresis-tanceversustimeinagraphformat.


2.2 Display Features

REMOTE IndicatesthattheinstrumentiscontrolledremotelyviatheRS-232interface.Inthismode,allofthekeysandtherotaryswitchareinac-tive,exceptfortheOFFposition.

COM Flasheswhendataistransmittedtotheserialinterface.Oncontinu-ouslyifthereisaproblemintransmission.

2nd Indicatesthatthesecondaryfunctionofakeywillbeused.

Indicatesthatthe“programmedtimetest”modewasselectedbeforethemeasurementwasstarted.

DAR Indicatesthatthe“automaticcalculationofDielectricAbsorptionRatio”modewasselectedbeforethemeasurementwasstarted.

PI Indicatesthatthe“automaticcalculationofPolarizationIndex”modewasselectedbeforethemeasurementwasstarted.

DD Indicatesthatthe“automaticcalculationof“DielectricDischargeIndex”modewasselectedbeforethemeasurementwasstarted.

SMOOTH Smoothstheinsulationmeasurementreadingsonthedisplayforbetter visibility.

ALARM Indicatesthatthealarmisactivated.AnaudiblealarmwillsoundifthevaluemeasuredisabovethelimitdefinedintheSET-UPmode.

Indicatesthebatterychargecondition.

Voltagegenerateddangerous,V>120VDC.

Externalvoltagepresent-thissymbolisactivatedwhentheStartbuttonispressedifV>25VRMS.


CHAPTER 3

SPECIFICATIONS

3.1 Reference ConditionsInfluence Quantity Reference Values

Temperature 23°C ±3°K

Relative Humidity 45 to 55%

Supply Voltage 9 to 12V

Frequency Range DC and 15.3 to 65Hz

Capacitance in parallel with the input resistance 0µF

Electric Field nil

Magnetic Field <40A/m

3.2 VoltageMeasurement Range 1.0 to 99.9V 100 to 999V 1000 to 2500V 2502 to 4000V

Frequency Range* DC and 15Hz to 500Hz DC Only

Resolution 0.1V 1V 2V 2V

Accuracy 1% of Reading ± 5cts 1% of Reading ± 3ct

Input Impedance 750kΩ at 3MΩ depending on measure voltage

*Over 500Hz, the small display indicates “- - - -” and the main display gives only an assess-ment of the peak value of the measured voltage.

Measurement Category:1000VCATIIIor2500VCATI(transients≤2.5kV)

3.3 Insulation ResistanceMethod: Voltage-currentmethodaccordingtoEN61557-2(ed.02/97)

Nominal Output Voltage: 500,1000,2500,5000VDC (orselectablefrom40Vto5100V)

Adjustments Available in Variable Mode: 10Vfrom40Vto1000V 100Vfrom1000Vto5100V

Open-circuit Voltage: ≤1.1xVn±2V(Vn±2%invariablemode)

Max. Overload of Voltage Vn: (1.05+dISt)Vn+50V withdlSt=3%,10%or20%

NOTE: Vn = Test Voltage


Nominal Current:>1mADC

Short-circuit Current: <1.6mA±5%

Load Current: 3mADCapproxwhenstartingmeasurement

Maximum Acceptable AC Voltage:Vpeak-(1.05+dISt)VnwithdlSt=3%,10%or20%

NOTE: dlStistheratioofVDisturbance/VOutputandisselectablein SET-UPmode

Measurement Ranges:500V:30kΩ to 1.999TΩ 2500V:100kΩ to 9.99TΩ1000V:100kΩ to 3.999TΩ 5000V:300kΩ to 9.99TΩ

Variable: 40Vto5100V(seegraphbelow)

12Rmax (TΩ)

Variable Voltage (V)

Resistance Range in Voltage Mode

1086420

0 1000 2000 3000 4000 5000

300Rmin (kΩ)

250200150100500

Resolution and Accuracy Chart (seecurves-pages14and15)

TestVoltage

500V500V - 1000V

2500V500V - 1000V - 2500V - 5000V

Range30 to99kΩ

100 to299kΩ

300 to999kΩ

1MΩ to3.999MΩ

4.00 to 39.99MΩ

40.0 to 399.9MΩ

Resolution 1kΩ 10kΩ 100kΩAccuracy ±5% of Reading + 3cts

TestVoltage

500V - 1000V - 2500V - 5000V1000V - 2500V

5000V2500V5000V

Range400MΩ to 3.999GΩ

4.00 to 39.99GΩ

40.0 to 399.9GΩ

400GΩ to 1.999TΩ 2.000 to 3.999TΩ 4.00 to

10.00TΩResolution 1MΩ 10MΩ 100MΩ 1GΩ 10GΩAccuracy ±5% of Reading + 3cts ±15% of Reading + 10cts


DC Voltage Measurement (duringinsulationtest):

Range Resolution Accuracy

40.0 to 99.9V 0.1V

1% of Reading ± 1ct100 to 1500V 1V

1501 to 5100V 2V

DC Voltage Measurement (afterinsulationtest):


25 to 5100V 0.2% Vn 5% of Reading ± 3cts

Typical build-up time for the measurement according to components tested (Vdist = 0.03Vn).Thesevaluesincludetheinfluencescausedbythechargeofthecapacitivecom-ponent,bytheautomaticrangesystemandtothetestvoltagecontrol.

Test Voltage LoadNon Capacitive (unsmoothed

measurement)

With capacitance of 1µF (smoothed

measurement)

500V1MΩ 3s 4s

100GΩ 8s 40s

1000V1MΩ 3s 4s

100GΩ 8s 80s

2500V3MΩ 3s 4s

100GΩ 8s 90s

5000V5MΩ 4s 16s

100GΩ 8s 120s

Typical discharge time for a capacitive component to reach 25VDC.

Initial Voltage 500V 1000V 2500V 5000V

Discharge time (C in µF) C x 3s C x 4s C x 4s C x 7s


Typical changes in test voltages as a function of the load:

0

100

200

300

400

500

600

Outp

ut voltage (

V)

0.01 0.1 1

Resistance (MΩ)

500V Range

0

200

400

600

800

1000

1200

Outp

ut voltage (

V)

0.01 1

Resistance (MΩ)

1000V Range


0

500

1000

1500

2000

2500

3000

Outp

ut voltage (

V)

0.1 101

Resistance (MΩ)

2500V Range

0

1000

2000

3000

4000

5000

6000

Outp

ut voltage (

V)

0.1 101

Resistance (MΩ)

5000V Range


Capacity Measurement (afterdischargeoftestedcomponent):


0.005 to 9.999µF 1nF10% of Reading ± 1ct

10.00 to 49.99µF 10nF

Leakage Current Measurement


0.000 to 0.250nA1pA

15% of Reading ± 10cts

0.251 to 9.999nA 10% of Reading

10.00 to 99.99nA 10pA

5% of Reading

100.0 to 999.9nA 100pA

1.000 to 9.999µA 1nA

10.00 to 99.99µA 10nA

100.0 to 999.9µA 100nA

1000 to 3000µA 1µA 10% of Reading Calculation of Terms DAR and PI


0.02 to 50.00 0.01 5% of Reading ± 1ct

Calculation of Term DD


0.02 to 50.00 0.01 10% of Reading ± 1ct

3.4 Power Supply• RechargeablebatteryNiMh(8x1.2V/3.5Ah)• Recharge: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:6hoursfor100%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.

3.5 Environmental SpecificationsOperating Range: 14°to104°F(-10°to40°C)duringrechargingofbatteries 14°to131°F(-10°to55°C)duringmeasurement10to80%RHStorage:-40°to158°F(-40°to70°C);10to90%RH Altitude:<2000m

3.6 Mechanical SpecificationsCase Dimensions (LxWxH):10.63x9.84x7.09"(270x250x180mm)Weight:9.5lbs(4.3kg)approx

3.7 Safety SpecificationsElectricalsafetyaccordingtoEN61010, EN61557

Doubleinsulation:1000V CATIII2500V CATIPollutionDegree2

Electromagnetic Compatibility:NFEN61326-1(Ed.97)+A1,industrialenvironmentcategory

Mechanical Protection:IP53perNFEN60529(Ed.92)IK04perNFEN50102(Ed.95)


3.8 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°C

0.20% R0.3% R ± 1ct1% R ± 1ct

Humidity 10 to 80% RHV

MΩ (10kΩ to 40GΩ)MΩ (40GΩ to 10TΩ)

0.2% R0.2% R3% R

1% R ± 2cts 1% R ± 5cts15% R ± 5cts

Frequency 15 to 500Hz V 0.3% R 0.5% R ± 1ct

AC voltagesuperimposed on

test voltage0% to 20% Vn MΩ 0.1% R / % Vn 0.1% R / % Vn ± 5cts

*The terms DAR, PI, DD and the capacity and current leak measurements are included in the quantity “MΩ”.


CHAPTER 4

SPECIAL FUNCTIONS

4.1 SET-UP FunctionThisfunction,locatedatthetoprotaryswitchposition(Blue“SET-UP”position),isusedtochangetheconfigurationoftheinstrument.

4.1.1 Default ConfigurationsThedefaultconfigurationsareasfollows:

SET-UPInstr.Nr. 9600004 SW Version 1.2

Display contrastAlarm SettingsAdjustable Voltage 1Adjustable Voltage 2Adjustable Voltage 3Timed Run (h:m)Sample Time (m:s)DAR (s/s)PI (m/m)Set Step Function 1Set Step Function 2Set Step Function 3Temperature UnitDefault probe temperatureRc reference temperature∆T for R/2Calculate ∆T from MemoryMaximum Output VoltageSet Default ParameterClear MemoryV Disturbance / V OutputBuzzerPower DownBaud RateUnitsDate (d.m.y)Time (h:m)

80

50V100V250V0:100:10

30/601.0/10

Celsius23°C40°C10°C

5100V

3%onoff

9600 / RS232Europe

04.02.200415:47


4.1.2 Instrument Configuration Parameters

DISPLAY CONTRASTThis functionallowsyoutochangethe lightnessanddarknessof thedisplaytobestsuittheenvironment.

Range

0 to 255*

*The display is no longer legible above 130

Toadjustthecontrast,pressthebuttontomovetheblinkingcursortothedis-playcontrastvalue.Thedefaultvalueis80.Usetheandbuttonstolightenordarkenthedisplay.Thehigherthenumberthelighterthedisplaywillbe.Whenfinishedpressthebuttontomovethecursorbacktotheparameterselectionposition.

ALARM SETTINGSThisfunctionallowsyoutoselectalowinsulationresistancevaluethatwillcauseanalarmsymboltoappearonthedisplayandwillcausethebuzzertoemitacon-tinuoustonewhenthemeasuredinsulationresistancefallsbelowthisvalue.

Voltage Range

500V 30kΩ to 2TΩ1000V 100kΩ to 4TΩ2500V

300kΩto 10TΩ5000V

Adj. Voltage 1

10kΩ to 10TΩAdj. Voltage 2

Adj. Voltage 3

To adjust the alarm settings, press the button until the blinking cursor is tothe left of alarm settings.To adjust the alarm value press thebutton. Fromthescreendisplayed,youcanadjustlowlimitresistancevaluesfor500V,1000V,2500V,5000Vorthethreeadjustablevoltagepositions.

Tochangethelowlimitforanyofthesevoltagepositions,usetheandbut-tonstoselectthevoltage,thenpressthebuttontohighlighttheresistancevalueforthatvoltage.Next,usetheandbuttonstoincreaseordecreasethevalueattheblinkingcursorposition.

Oncethedesiredresistancevaluehasbeenprogrammed,pressthebuttontomovethecursoragaintothevoltageselectionpartofthescreen.Youmaynowselectthedifferentvoltageandadjustitsvalueasjustdescribed.

Toexitthealarmsettingfunction,presstheDISPLAYbutton.ThiswillbringyoubacktothetopoftheSET-UPmenu.


ADJUSTABLE VOLTAGE 1, 2, 3ThisfunctiondefinesaspecificvoltagethatwillbeusedforInsulationResistanceMeasurementwhentherotaryswitchisintheadjustablevoltageposition.Thevaluesforthissettingcanbeanywherefrom40to5100Voltsadjustablein10or 100 Volt increments.

Voltage RangeAdj. Voltage 1 40 to 5100V

(in steps of 10V from 40 to 1000V)(in steps of 100V from 1000 to 5100V)

Adj. Voltage 2Adj. Voltage 3

Therearethreeadjustablesettingspossible.

TochangethevalueforAdjustableVoltage1,2or3,usethebutton.ToselecttheAdjustableVoltageparametertoprogram,pressthebuttontohighlightthevoltagetobeusedforthatselection,thenusetheandbuttonstoincrementordecrementthevalue.

Whenthedesiredvoltage isonscreen,press thebutton tomovethecursorbacktotheparameterselectionposition.

TIMED RUN (h : m)Thisfunctionletsyousetatimefrom1minuteto49hoursand59minutestorunaninsulationresistancetest.TheModel5070willautomaticallyendthetestattheendofthetimedrun.

Range00 to 49 : 01 to 59

Tochangethelengthoftimethatatestwillrun,pressthebuttontomovetheblinkingcursortothehourinTIMED-RUN.Usetheandbuttonstoincrementordecrementthehours.Next,pressthetoselecttheminutevalue.Usetheandbuttonstoincrementordecrementtheminutes.

When finished, press the button tomove the cursor back to the parameterselectionposition.


SAMPLE TIME (m : s)Data froma timed run testcanbestored in theModel5070atan interval youselect.Thisstorageintervalcanbeasfastasonceevery5secondstoasslowasonceevery10minutes.

Range00 to 59 : 05 to 59

DAR (s : s)TheDielectricAbsorptionRatioisaratioofinsulationresistancemeasuredattwopredetermined times.The readingat thefirst timemark is thendivided into thereadingatthesecondtimemarktocalculatetheratio.Thetypicaltimesusedforthistestare30secondsand60seconds.Thesearethefactorydefaultsettings.Youcanadjustthetimeshereinthesetupmodefrom10to90secondsforthefirstreadingandfrom15to180secondsforthesecondreading,bothin5secondincrements.

NOTE: The Model 5070 will not allow the time for the second reading to be set lower that the set time for the first reading.

Range10 to 90 : 15 to 180

PI (m : m)ThePolarization Index isa ratioof insulationresistancemeasuredat tworede-terminedtimes.Thereadingatthefirsttimemarkisthendividedintothereadingatthesecondtimemarktocalculatetheratio.Thetypicaltimesusedforthistestare1minuteand10minutes.Thesearethefactorydefaultsettings.Theinsula-tionmaterialsusedtodayrequirelesstimetodeterminethisratio.Therefore,youcanadjustthetimeshereinthesetupmodetosuityourneedsfrom0.5minutesto30minutesforthefirstreadingandfrom1minuteto90minutesforthesecondreading.

NOTE: The Model 5070 will not allow the time for the second reading to be set lower that the set time for the first reading.

Range0.5 to 30 : 1 to 90


SET STEP FUNCTION 1, 2, 3Stepvoltagetestingcanbeavaluabletoolindeterminingdefectiveinsulationorusedtodryoutcablesthathavebeenpenetratedbymoisture.Withthisfunction,youcanprogramthreedifferentprofileseachcontainingupto5voltagestepsanddwelltimesfrom1minuteto9hoursand59minutesperstep.

StepFunction

Default Value Range

Voltage Duration (h:m) Voltage Duration (h:m)

Step Function 1Step 1Step 2Step 3Step 4Step 5

50V100V150V200V250V

sample time

h : m00:0100:0100:0100:0100:01

00:01 (m:s)

40 to 5100V(in 10V, then 100V steps)

h : m00 to 09 : 01 to 5900 to 09 : 01 to 5900 to 09 : 01 to 5900 to 09 : 01 to 5900 to 09 : 01 to 59

00 to 59 : 00 to 59*


100V300V500V700V900V

sample time

h : m00:0100:0100:0100:0100:01

00:01 (m:s)



00 to 59 : 00 to 59*


1000V2000V3000V4000V5000V

sample time

h : m00:0100:0100:0100:0100:01

00:01 (m:s)



00 to 59 : 00 to 59*

*The minimum sample time is related to the total duration of the test (Total Run Time). It is equal to : Sample Time (seconds) = (h+1)*5 where h= total run time in hours.

TEMPERATURE UNITThisfunctiontogglesthedisplaybetweenFahrenheitandCelsiusscalesfortem-peraturedisplay.

Range°C or °F


DEFAULT PROBE TEMPERATUREWith this function, you can programa default value for the temperature of thedeviceundertest.Thiswillbeusedwhentemperaturecorrectionisappliedifnovalueisprogrammedrightafterthetestisconducted.

Range-15°C to +75°C

Rc REFERENCE TEMPERATUREReferencetemperaturetowhichthemeasurementresultmustbereferred.


ΔT for R/2Insulationresistancechangeswithtemperature.Thetypicalruleofthumbisthatforevery10°Cincreaseintemperaturetheleakagecurrentdoublesandtheresis-tancehalves.Somematerialshaveadifferent rateofchange.This feature letsyouprogramthetemperaturechange(ΔT)atwhichtheresistancehalvesfortheequipmentyouwillbetesting.Thisvaluewillbeusedwhencorrectingresultstoareferencetemperature.


CALCULATE ΔT FROM MEMORYTheModel5070hastheabilitytocalculateΔTfromthreepreviouslystoredtestsre-sultsatdifferenttemperaturesfromonematerialintheeventthatnoΔT is selected forthepresenttest.

MAXIMUM OUTPUT VOLTAGETheModel5070providestheabilitytolimitthemaximumtestvoltagetoavalueyouspecifyfrom40to5100volts.Whenprogrammed,theinstrumentwillnotgen-erateahighervoltagetoconductthetesteveniftheswitchpositionindicatesahighervoltage.Forexample,ifyousetthemaximumvoltageto1250voltsandyouplacetherotaryswitchinthe5000voltpositionandstartatest,theModel5070willonlyoutput1250volts.

Range40 to 5100V


SET DEFAULT PARAMETERThisfunctionallowsyoutoresetalltheuserprogrammablefunctionsbacktothefactorydefaults.

CLEAR MEMORYTheclearmemoryfunctionallowsyoutoselectivelyerase individual testsoralltests from the internalmemoryof the instrument.Awarningwill appear first toensurethatyoudon’tdothisbyaccident.

V DISTURBANCE / V OUTPUT (see Appendix C)Thisratiodefinesthemaximumallowabledisturbancevoltagedependingontheselectedmeasurementvoltage.IftheVDisturbanceexceedsthevalueoftheratio,theinstrumentstopsthetestinprocess.Ifthevoltageexceedingtheratioispres-entatthedeviceundertestbeforethetestisstarted,atestwillnotbeallowedtostart.Threeprogrammablevaluesare:3%,10%and20%of themeasurementvoltage.Thedefaultis3%.

Example: If a test is to be performed at 1000V and the V Disturbance / V Output is set at 10%, the presence of 100 volts (1000V * 10% = 100) before the test starts will inhibit the test.

Range3%, 10% or 20%

BUZZERTheModel5070isequippedwithabuzzerthatwillemitanaudibletonewhenakeyispressed,atregularintervalsduringatimedtest,orwillbeoncontinuouslyduringanalarmtrip.Thisfunctionletsyoutogglethebuzzeronoroff.

RangeON or OFF

POWER DOWNTheModel5070hasapowersavefeaturewhichturnstheunit’sdisplayoffafter5minutesofnoactivity,ifatimedtestisnotinprogress.Thisfunctionletsyoutogglethisfeatureonoroff.

RangeON or OFF


BAUD RATEThis function letsyouprogram in thecommunicationspeedbetween theModel5070andyourcomputer.Italsoletsyouselectaparallelcommunicationmodefordirectprinting.PressthedownarrowbuttonuntiltheblinkingcursoristotheleftofBaudRate.Toadjust thebaud rate,press the rightarrowbutton tohighlight thecurrentsetting.Next,presstheupordownarrowbuttonstoselectthedesiredbaudrate.Yourchoicesare300,600,1200,2400,4800,9600orparallel.Presstherightarrowbuttonafteryouhaveselectedthebaudratetocompletetheprocess.

Range300 to 9600 / RS-232 or – / Parallel

UNITSTheModel5070candisplay thedate ineitherUS (m.d.y)orEuropean (d.m.y)fashion.Thischoicecanbetoggledhere.PressthedownarrowbuttonuntiltheblinkingcursoristotheleftofUnits.Toselectthedesiredformat,presstherightarrowbuttontohighlightthecurrentsetting.Next,presstheupordownarrowbuttonstoselecteitherUSAorEurope.Presstherightarrowbuttonafteryouhaveselectedthedesiredunitstocompletetheprocess.

RangeEurope or USA

DATETheday,monthandyearvaluecanbesetwiththisfunction.PressthedownarrowbuttonuntiltheblinkingcursoristotheleftofDate.ToadjusttheDate,presstherightarrowbuttontohighlightthecurrentsetting.Thecursorwillmovetothefirstvariable(dayforEuropeanformatormonthforUSformat).Next,presstheupordownarrowbuttonstoselectthedesiredvalue.Presstherightarrowbuttontohighlightthenextdatefield(monthforEuropeanformatordayforUSformat).Next,presstheupordownarrowbuttonstoselectthedesiredvalue.Presstherightarrowbuttononcemoretohighlightthelastdatefield,whichisyear.Presstheupordownarrowbuttonstoselectthedesiredyear.Finally,presstherightarrowbuttonafteryouhaveselectedthedatesetuptocompletetheprocess.

Europe USAdd.mm.yyyy mm.dd.yyyy


TIME (h:m)Timecanbesethere.A24-hourclockisusedintheModel5070.Therefore3:30pmwouldbeprogrammedinas15:30.PressthedownarrowbuttonuntiltheblinkingcursoristotheleftofTime.ToadjusttheTime,presstherightarrowbuttontohighlightthecurrentsetting.Thecursorwillmovetothehourselection.Next,presstheupordownarrowbut-tonstoselectthedesiredhourfrom0to24.Presstherightarrowbuttonagaintohighlightminutes.Next,presstheupordownarrowbuttonstoselectthedesiredminutesfrom0to59.Finally,presstherightarrowbuttonafteryouhaveselectedthetimesetuptocompletetheprocess.

4.1.3 SET-UP MenuTurningtherotaryswitchtoSET-UPgivesyouaccesstothemenuofallprogram-mablefunctions.Selectthefunctiontobemodifiedusingtheandbuttons.Movetheblinkingcursortothevaluetobemodifiedusingtheandbuttons.Adjustthevalueattheblinkingcursorusingtheandbuttons.Movebacktotheselect functionpositionbypressing theandbuttonsuntil theblinkingcursorisagaintotheleftofthefunction.PressingtheDISPLAYbuttonwhilemodifyingaparameterwillbringyoubacktothetopoftheSET-UPmenu.WhenyoufirstentertheSET-UPmodeadisplaysimilartothiswillappear:


Display contrastAlarm SettingsAdjustable Voltage 1Adjustable Voltage 2Adjustable Voltage 3Timed Run (h:m)Sample Time (m:s)DAR (s/s)

80

50V100V250V0:100:10

30/60

• ThetoplineonthisscreenindicatesthatyouareinSET-UPmode.• LinetwoindicatestheModel5070’sInstrumentNumberandSoftwareVersion.• Theselectioncursorwillbeblinkingandpositionedtothe leftof the“Display

Contrast”parameter.

Toadjustthe“DisplayContrast”parameter,pressthebuttontomovetheblink-ingcursor todisplaycontrastvalue.Thedefaultvalue is80.Usetheandbuttons to lighten or darken the display.The higher the number the lighter thedisplaywillbe.Whenfinished,pressthebuttontomovethecursorbacktotheparameterselectionposition.Thearrowbuttonscanbeusedtomodifyanyparameter.


4.2 MODE / PRINT Button

4.2.1 Primary Function - MODETheprimaryfunctionofthisbuttonisusedbeforethemeasurementtakesplacetodefinethemeasurementconditions.

NOTE: This button is inactive in the Step Voltage and SET-UP positions.

• PresstheMODEbuttononcetoaccessthelistofpossiblemeasurementmodes.Selectthemodeusingtheandbuttons.

• Tovalidatethemodeselected,presstheMODEbuttonagain.

The measurement mode choices are as follows:

MANUAL STOP

Thisistheconventionalquantitativeinsulationmeasurementmode.

The measurement is started by press-ingSTART/STOPbuttonandstoppedbypressingSTART/STOPbuttonagain.

In this mode, the user determines theduration of the test, which will be indi-catedbytheelapsedtimeindicator.

MANUAL STOP + DD The measurement is started by press-ingSTART/STOPbuttonandstoppedbypressingSTART/STOPagain.

1minute after the endof themeasure-ment,theinstrumentcalculatesanddis-playstheDielectricDischarge(DD)ratio.Thetimeremainingduringthisminuteisdisplayed.

TIMED RUNThismodeisusedtoperformameasure-ment foradurationdefined inadvance,with a predetermined number of mea-surement samples. The measurementisstartedbypressingtheSTART/STOP button and stops automatically afterthe time programmed by the user hasoccurred.

MODETotal Run Time

Manual StopManual Stop + DD Duration Sample (h:m) (m:s)Timed Run 02:30 01:40Timed Run + DDDAR (s/s) 30/60PI (m/m) 1/10

MODETotal Run Time


MODETotal Run Time 02:30:00



Thisduration(Duration)andthetimeintervalbetweensamples(Sample)mustbespecifiedwhentheTimedRunmodeisselected.

To set the Duration and Sample rate from the MODE screen proceed as follows:

• UsetheorbuttonstohighlightTimedRun.• PressthebuttontomovethecursortoDuration,thehourvaluewillbe

highlighted.• Usetheorbuttonstoselectthedesiredhoursfrom0to49.• Next,pressthebuttontohighlightminutes.• Usetheorbuttonstoselectthedesiredminutesfrom0to59.

The minimum selectable duration is 1 minute and the maximum is 49 hours and 59 minutes.

• Press thebutton until theminute value in the sample rate is high-lighted,thenusetheorbuttonstoadjusttheminutevaluebetween0 and 5.

• Next,pressthebuttonuntilthesecondsvalueishighlighted.• Usetheorbuttonstoselectthedesiredsecondsfrom1to59.

The shortest possible sample rate is 5 seconds and the longest sample rate is 5:00 minutes.

WhenfinishedwithDurationandSampleselections,press theorbuttonsagainuntiltheblinkingcursorisatTimedRun.

You are now ready to begin a Timed Run Test for the selected Test Voltage.

• PresstheYellowSTART/STOPbuttontobeginthetest.Thedisplaywillbrieflyshow“OK”followedbytheactivetestscreen.

• Whenthemeasurement isstarted, the timercountsdownshowing thetimeremaininginthemeasurement.

• WhentheRemainingTimeiszero,themeasurementisstopped.

Duringthetimedruntest,theintermediatesamplesareautomaticallystored.Theyareusedtoplotacurveof insulationresistancevstime.Thiscurvecanbedis-playedafterthemeasurementiscompletedbypressingtheYellow2ndbuttonandtheGRAPHbutton,aslongasnonewmeasurementhasbeenstarted.

Thesamplesand the curveareautomatically storedwith the final valueof theresistance,ifitisstored.

During the measurement, if the position of the rotary switch is changed, or the START/STOP button is pressed, the measurement is stopped.


TIMED RUN +DDThismode is identical to theTimedRunexceptthat1minuteaftertheendofthemeasurement, the instrument calculatesand displays the Dielectric Discharge(DD).Themeasurementdurationisthere-forethedurationoftimedrun+1minute.The insulation resistance vs time curvecanbedisplayedafterthemeasurementbypressingtheYellow2ndbuttonandtheGRAPHbutton,aslongasnonewmea-surementhasbeenstarted(see§4.3.2foratypicalgraph).

DARThe DAR measurement is started bypressing the START/STOP button andstops automatically when the DAR ratiohasbeencalculated,e.g.after1minute,the time taken to measure the secondinsulationresistancevalueneededforthecalculation(theratiotimescanbemodifiedintheSET-UPmode).Thedefaultis30/60meaning thefirst readingwillbe taken in30secondsandthesecondreadingwillbetakenin60secondsfromtheStart.

PIThePImeasurementisstartedbypress-ing theSTART/STOP button and stopsautomaticallywhenthePIratiohasbeencalculated,e.g.after10minutes,thetimetaken tomeasure thesecond insulationresistancevalueneededforthecalcula-tion(theratiotimescanbeprogrammedintheSET-UPmode).

NOTE: In this mode, the DAR ratio will also be calculated automatically if the times needed to calculate it are less than the second time needed to calculate the PI ratio.


Manual StopManual Stop + DD Duration Sample (h:m) (m:s)Timed Run 02:30 01:40Timed Run + DDDAR (s/s) 30/60PI (m/m) 1.0/10






NOTE

1. What is the DD (Dielectric Discharge index)?Inthecaseofmultilayerinsulation,ifoneofthelayersisdefectivebuttheresis-tanceofalltheothersishigh,neitherthequantitativeinsulationmeasurementnorthecalculationofthePIandDARqualityratioswillrevealtheproblem.Thismakesitimportanttoperformadielectricdischargetest,fromwhichtheDDRatiocanbecalculated.Thistestmeasuresthedielectricabsorptionofheteroge-neousormultilayerinsulationanddisregardsparallel-surfaceleakagecurrents.Itinvolvesapplyingatestvoltageforlongenoughtoelectrically“charge”theinsu-lationtobemeasured(typically,avoltageof500Visappliedfor30minutes).Attheendofthemeasurement,theinstrumentcausesarapiddischarge,duringwhichthecapacitanceoftheinsulationismeasured;1minutelater,theresidualcurrentcirculatingintheinsulationismeasured.

TheDDRatioisthencalculatedasfollows:DD = current measured after

1 minute (mA) / [test voltage (V) x measured capacitance (F)]

Theinsulationqualityrating,asafunctionofthevaluefound,isasfollows:

Value of DD Quality of InsulationDD > 7 Very Poor

DD between 7 and 4 PoorDD between 4 and 2 Doubtful

DD < 2 Good

Thedielectricdischargetestisespeciallywell-suitedtoinsulationmeasurementsonrotatingmachines,and ingeneral, to insulationmeasurementsonheteroge-neousormultilayerinsulationscontainingorganicmaterials.

2. What are the DAR (Dielectric Absorption Ratio) and the PI (Polarization Indexes)?

It isbeneficialtocalculateinsulationqualityratios,inadditiontothequantitativeinsulationresistancevalue,becausetheycanbeusedtoeliminatetheinfluenceofcertainparameterslikelytoinvalidatethe“absolute”insulationmeasurement.

Themostimportantoftheseparametersare:• Temperatureandrelativehumiditywithwhichinsulationresistancevariesto

aquasi-exponentiallaw.• Theleakagecurrents(capacitivechargingcurrent,dielectricabsorptioncur-

rent)arecreatedbytheapplicationofthetestvoltage.Eventhoughtheygraduallyfalloff,theyaffectthemeasurementatthestartforalengthoftimethatdependsonwhethertheinsulationisingoodconditionordegraded.

Theseratioscompletethe“absolute”insulationvalue,andreliablyreflectwhethertheinsulationlayersareingoodorpoorcondition.


Inaddition,changesintheseratiosovertimecanbeobservedandusedforpre-ventativemaintenance(e.g.tomonitortheagingoftheinsulationofapopulationofrotatingmachines).

TheDARandPIratiosarecalculatedasfollows:

PI = R 10 min / R 1 min(2valuestobenotedduringa10minutemeasurementareattheendof1minuteand10minutes)

DAR = R 1 min / R 30 sec(2valuestobenotedduringa1minutemeasurementareattheendof30secondsandattheendof1minute)

Notethatthetimesof1and10minutesforthecalculationofPIand30&60sec-ondsforthecalculationofDARarethosecurrentlyconsideredstandardsandpro-grammedasdefaultsintheinstrument.TheycanbemodifiedinSET-UPmodetoadapttoapossiblechangeinastandardortotheneedsofaspecificapplication.

Interpretationoftheresults:

DAR PI Condition of Insulation

< 1.25< 1 Poor or

even Dangerous< 2

< 1.6 < 4 Good

> 1.6 > 4 Excellent

4.2.2 Secondary Function - PRINTThesecondaryfunctionofthisbuttongivesaccesstotheprintmenubelow.There are two or three choices in the print mode depending on when it isaccessed:

• Ifyouaccesstheprintmoderightafterthecompletionofatest,youwillsee“Printresult”asthefirstchoice.

• Ifyouaccesstheprintmodewithoutrunningatest,“Printmemory”willbeyourfirstchoice.

Print result:ImmediateprintingofameasurementfollowingameasurementorafteraccesstotheMR(MemoryRecall)mode.

Print memory:Printingofstoreddata.

Baud rate / Port:DisplayofbaudrateselectedintheSET-UPmenu.

PRINTPrint resultPrint memoryBaud rate / Port 9600 / RS232


4.3 DISPLAY / GRAPH Button

4.3.1 Primary Function - DISPLAYTheprimaryfunctionofthisbuttonisusedtobrowsethroughthevariousscreensofinformationavailablebefore,duringorafterthemeasurement.Thescreensvarydependingonthemodeselectedbeforethemeasurementisstarted.This section, startingon the followingpage, shows typical screens that canbedisplayedforeachtestmode.


MANUAL STOP mode

BEFORE the measurement:

FIXED VOLTAGE

500 V

Input voltageFrequencyInput currentDate: 09.28.2003

0.1V AC0.0Hz

24.6pATime: 22:39

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

Information Displayed: Information after pressing DISPLAY:

Test typeDC test voltage

AC/DC input voltageFrequency

Residual input currentDate and Time


Residual input currentVoltage bargraph

DURING the measurement:

10 100 1 10 100 1 10 100 1 10

507V

kΩ MΩ GΩ TΩ

24.6pAElapsed time 00:00:43

234.5M

507V 24.6pAElapsed time 00:00:43

234.5M

DAR (30/60)PI (1/10)Capacitance


Measured resistanceDC test voltageResidual current

Measurement durationInsulation resistance bargraph

Measured resistanceDC test voltageResidual current

Measurement durationDAR, PI, Capacitance


AFTER the measurement:


234.5M


2.641.05

320nF

FIXED VOLTAGE

500 V


0.1V AC0.0Hz

24.6pATime: 22:49

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

Information Displayed:

Measured resistanceDC test voltageLeakage current

Measurement durationDAR, PI, Capacitance values

After 1st Press on DISPLAY:

Test type and test voltageAC/DC input voltage

FrequencyLeakage current

Date, time

After 2nd Press on Display:


Leakage currentVoltage bargraph


MANUAL STOP + DD mode


FIXED VOLTAGE

500 V


DD

0.1V AC0.0Hz

24.6pATime: 09:39

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

DD


Test TypeDC test voltage


Residual currentDate, time




10 100 1 10 100 1 10 100 1 10

507V

kΩ MΩ GΩ TΩ


234.5M

DD


234.5M

DAR (30/60)PI (1/10)CapacitanceDD currentDD

DD

pA



Measurement durationInsulation resistance bargraph



Residual current (calculation of DD)DD




234.5M


2.241.55

220nF11.55pA

DD

FIXED VOLTAGE

500 V


DD

0.1V AC0.0Hz

24.6pATime: 10:09

Information Displayed: After 1st Press on DISPLAY:




Test TypeDC test voltage


Leakage currentDate, time

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

DD


234.5M


2.241.55

320nF24.6pA

2.55

DD




After 1 Minute:

Measured resistanceDC test voltageLeakage currentTotal test time

DAR, PI, CapacitanceDD test current

DD


TIMED RUN mode


ADJUSTABLE VOLTAGE 2

2300 VTest Run Time 00:10:00


0.1V AC0.0 Hz

20.6pATime: 09:39

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pAAC



Programmed duration of the testAC/DC input voltage

FrequencyResidual current

Date, time


Residual currentVoltage bargraph


10 100 1 10 100 1 10 100 1 10

2307V

kΩ MΩ GΩ TΩ

24.6pARemaining time 00:09:43

234.5M

2307V 24.6pARemaining time 00:09:43

234.5M




Remaining measurement timeInsulation resistance bargraph


Remaining measurement timeDAR, PI, Capacitance




234.5M


2.641.05

320nF




0.1V AC0.0 Hz

20.6pATime: 09:49

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pAAC







FrequencyLeakage current

Date, time





TIMED RUN + DD mode





0.1V AC0.0Hz

20.6pATime: 09:39

DD

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

DD


Test type and DC test voltageProgrammed duration of the test


Residual currentDate, time




10 100 1 10 100 1 10 100 1 10

2307V

kΩ MΩ GΩ TΩ


234.5M

DD


234.5M


pA

DD



Remaining measurement timeInsulation resistance bargraph


Remaining measurement timeDAR, PI, Capacitance





234.5M


2.241.55

320nF11.55pA

DD


2300 V


0.1V AC0.0 Hz

24.6pATime: 10:05

DD

Information Displayed: After 1st Press on DISPLAY:






Leakage currentDate, time

0.1 V

V

0.0Hz

0 250 500 750100 1000

24.6pAAC

DD


234.5M


2.241.55

320nF11.55pA

2.55

DD




After 1 Minute:

Measured resistanceDC test voltageLeakage currentTotal test time

DAR, PI, CapacitanceDD test current

DD


DAR mode


FIXED VOLTAGE



0.1V DC0.0Hz

20.6pATime: 20:02

DAR

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pADC

DAR




FrequencyResidual currentDate and Time




10 100 1 10 100 1 10 100 1 10

5007V

kΩ MΩ GΩ TΩ


234.5M

DAR


234.5M


DAR



Remaining measurement timeInsulation bargraph


Remaining measurement timeDAR, PI, Capacitance in process




234.5M


2.64

320nF

DAR

FIXED VOLTAGE



0.1V DC0.0 Hz

20.6pATime: 20:03

DAR

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pADC

DAR

*NOTE: Because the test will stop after the DAR calculation, PI will not be calculated if the time values for this test are longer than those set for DAR.



Measurement durationDAR, PI*, Capacitance




FrequencyLeakage currentDate and time





PI mode


FIXED VOLTAGE



0.1V DC0.0Hz

20.6pATime: 20:02

PI

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pADC

PI




FrequencyResidual currentDate and Time




10 100 1 10 100 1 10 100 1 10

5007V

kΩ MΩ GΩ TΩ


234.5M

PI


234.5M


PI



Remaining measurement timeInsulation bargraph


Remaining measurement timeDAR, PI, Capacitance in process




234.5M


2.74

320nF

PI

FIXED VOLTAGE



0.1V DC0.0 Hz

20.6pATime: 10:03

PI

0.1 V

V

0.0Hz

0 250 500 750100 1000

20.6pADC

PI



Measurement durationDAR, PI*, Capacitance




FrequencyLeakage currentDate and time





4.3.2 Secondary Function - GRAPH

AttheendofaprogrammedTimeTest(TimedRunorTimedRun+DD)press-ingthe2nd + GRAPHbuttonswillbringupadisplayoftheInsulationResistanceversustimecurve.

The resolution of this presentation isdependenton thesample timeselectedbeforethetestorduringset-up.

The and buttons can be used tomove the vertical cursor along the timeaxistodisplaytheInsulationResistanceandelapsedtesttimeatthecursorposi-tion.

PressingtheDISPLAYbuttonreturnstotheDigitalPresentationofResults.

4.4 / TEMP Button

4.4.1 Primary Function - Selectstheparametertobemodifiedtotheleftormovesthecursoronagraphscreentotheleft.

4.4.2 Secondary Function - TEMP

At thecompletionofa test,press the2nd + TEMPbuttons.Thisbringsup theTemperatureCorrectiondisplay.

ThisfunctionprovidestheabilitytodisplayandstoretemperaturecorrectedInsula-tionResistancereadings.Therefore,testscomparedtohistoricaldatacanallbereferencedtoacommontemperatureforbetterqualitativeanalysis.

NOTE:• TheTEMPfunctioncanbeactivatedonlyafterameasurementhasbeen

completedeitherbeforeorafteritisstored.• If the result of yourmeasurement is outside of the instrument’s range

(thedisplayshowsthe<or>symbolnexttothereading),theTempera-tureCorrectionfunctioncannotbeapplied.

• TemperaturecorrectionisnotavailableonStepVoltagetests.

GRAPH

5078V

30002500200015001000500

0 0:30 1:00 1:30 2:00 2:30 3:00

MΩ00:02:30328.5MΩ


Procedure:

• You havemade ameasurement and not yet stored it.Check that theresultiswithintheInstrument’smeasurementrange.

• EntertheTEMPmodebypressingthe2nd + TEMPbuttons.

• Entertheestimatedtemperature(ProbeTemperature)atwhichyoumadethemeasurement(bydefault,theinstrumentoffersthevaluesetinSET-UP).

• With the blinking cursor next to“ProbeTemperature”,pressthebutton to activate probe tempera-ture.Use theorbuttons toincreaseordecreasethetempera-ture.

• Presstheorbuttonstomovethe cursor back to the selectionposition.

• Next, make sure “ResistanceCorrection”isturned“on”toperformthecalculation(thedefaultvalueinSET-UPis“off”).

• Pressthebuttontoselect“Resis-tance Correction”. Press the buttontohighlight“off”,thenpresstheorbuttonstoselect“on”.

• Thecalculationisperformedimme-diately and the result is displayedas Rc along with the ReferenceTemperature.

• Thisindicateswhatthemeasurementresultwouldhavebeenattherefer-encetemperature.

• TheReferenceTemperature(RcReferenceTemperature)andthecoef-ficientΔTindicatedandusedforthecalculationarethosedefinedinSET-UP.

Note: Tostorethiscalculation,pressthe2nd + TEMPbuttonsagain(OKisthendisplayed)beforestoringeverything.

NOTE:• Duringtheprocedure,pressingtheDISPLAYbuttonorturningtherotary

switchcancelsthecalculationinprogress.• IfthecoefficientΔTusedforthecalculationisnotknown,theinstrument

cancalculateitinadvanceusingatleast3storedmeasurementsmadeatdifferenttemperatures(see§4.10).

TEMPERATUREProbe TemperatureResistance CorrectionRcReference Temperature∆T for R/2

23.7°Con

28.5°C23.0°C

R measuredRc at 28.5°C

273.7MΩ328.5MΩ

TEMPERATUREProbe TemperatureResistance CorrectionRcReference Temperature∆T for R/2

23.7°Con

28.5°C23.0°C

R measuredRc at 28.5°C

273.7MΩ328.5MΩ


The calculation is performed as follows:Theinsulationresistancevarieswiththemeasurementtemperature.Thisdepen-dencecanbeapproximatedbytheexpression:

Rc=KT*RTwhere: Rc: CorrectedInsulationResistancetothereferencetemperatureRc ReferenceTemperature

RT: MeasuredInsulationResistanceatProbeTemperature

KT: CoefficientTdefinedasfollows: KT =(1/2) ((RcTemperatureReference-T)/ΔT) T: ProbeTemperature ΔT: TemperaturechangeforwhichtheInsulationResistanceis divided by 2 Rc Temperature Reference: TemperaturetowhichtheInsulation Resistancemeasurementisadjusted

Example: A motor winding is tested at 1000V in a 68°F environment. At the end of the timed test, the Insulation Resistance Value is 991 megohms. All the historical data is at 104°F. The corrected Insulation Resistance value corrected to 104°F for this motor is calculated by the Model 5070 to be 284.4 megohms using the formula above when temperature correction is activated.

4.5 / SMOOTH Button

4.5.1 Primary Function -Decreasesthevalueoftheflashingparameterdisplayedorselectsthenextpara-meter down.

4.5.2 Secondary Function - SMOOTHTheSMOOTHfunction(activatedbypressingthe2nd + SMOOTHbuttons)acti-vates/deactivatesaninsulationmeasurementdigitalfilter.Only the display is affected (which is smoothed), not themeasurements. Thisfunctionisusefuliftheinsulationvaluesdisplayedareveryunstable.

Thefilteriscalculatedasfollows:RSMOOTH=RSMOOTH+(R–RSMOOTH)/N

SinceNissetto20,thetimeconstantofthisfilterisapproximately20seconds.Therefore,displayedresultsarepresentedmoresmoothly.


4.6 / ALARM Button

4.6.1 Primary Function -Increasesthevalueoftheflashingparameterdisplayedorselectsthenextparam-eterup.

4.6.2 Secondary Function - ALARMToactivatetheALARMfunctionbeforeorduringatest,pressthe2nd + ALARM buttons.ThewordALARMwillappearatthetoprightsideofthedisplay.Iftheinsulationresistancedropsbelowthesetvalueatanytimeduringthetest,theALARMsymbolwillflashandthebuzzerwillbecontinuouslyon(ifactivated),aslongasthealarmconditionexists.Thealarmfunctioncanbedeactivatedatanytimebypressingthe2nd + ALARM buttonsagain.

4.7 / Button

4.7.1 Primary Function -Selectstheparametertobemodifiedtotherightormovesthecursoronagraphscreentotheright.

4.7.2 Secondary Function -

Toactivatethedisplaybacklight,pressthe2nd + buttons.

Todeactivate,pressthe2nd + buttonsagain.


4.8 MEM / MR Button

4.8.1 Primary Function - MEM (Save)Results can be recorded in the instrument’s memory and stored along withaddressesdefinedbyanobjectnumber(OBJ)andatestnumber(TEST).Anobjectrepresentsa‘box’intowhichyoucanplace99tests.Anobjectcanrep-resentasinglepieceofequipment,suchasamotororpumporadepartmentoranentirefacility.Testswillrepresenttheinsulationresistancemeasurementscarriedoutontheobject.

Example: If the object is a 3-phase motor, then each test number will represent a specific insulation resistance measurement.

e.g.- Test1=PhaseAtohousing Test2=PhaseBtohousing Test3=PhaseCtohousing and so on.

When the MEM button is pressed, the following screen is displayed:• TheflashingcursoridentifiesthefirstfreeObj:Testlocation. Here - 02 : 59(theObj.numberisthat

of the last measurement stored, buttheTestnumberisincrementedby1).

• Itisalwayspossibletomodify Obj.Testusingthe,,, buttons.• If a new Obj. is selected, the test

numberissetto01automatically.• If you select amemory address that

isalreadyoccupied,thescreentotheright isdisplayedandpromptsyoutoconfirmorcanceldeletionofthecon-tentofthataddress.

• To confirm overwriting, press the button.

• To cancel, press the button tohighlightCANCEL, thenpress thebuttontoconfirm.

When the MEM key is pressed again, themeasurementresultsarerecordedatthe selectedmemory address (whetheroccupiedornot).

Allinformationfromthemeasurementwillbestoredatasinglelocationinmemory:date,time,testmodeandvoltage,insulationresistance,capacitance,residualcur-

MEMORYStore

Obj. Test Date Time Fct.02 59 12.07.2003 22:39 3800V02 58 11.29.2003 15:47 50V02 03 11.24.2003 15:04 2150V02 02 10.29.2003 21:45 975V02 01 09.30.2003 02:43 5000V01 02 09.02.2003 15:07

MEMORYStore

!WARNING!Old data set willbe overwritten !

O.K.

CANCEL


rent,and,possibly,DAR,PI,DD(ifavailable), temperaturecorrectedresistanceandtheR(t)graph.

WARNING: If a button other than MEM is pressed, or the selector switch is moved before pressing MEM a second time, the instrument exits from MEM mode without saving the results.

Memory Capacity• Totalmemoryspace:128kb• Datamanagement:8kb• Freememoryspace:120kb

An insulation measurement requires 80 bytes. Therefore, approximately 1500insulationmeasurementscanbestored.

Free Memory SpaceThisfunctionisautomaticallyactivatedwhenaresultissaved.PresstheMEMbuttononcetobringupthefirstavailableObjectandTeststoragelocation.Abargraphisdisplayedcorrespondingtotheavailablememorylocation.

• Iftheentirememoryisfree,allofthebargraphsegmentsappear.• Iftheentirememoryisfull,thearrowtotheleftofthebargraphflashes.• Assoonasthestorageiscomplete,thebargraphdisappears.

Eachsegmentofthebargraphequalsapproximately50recordings.

4.8.2 Second Function - MR (Recall)TheMRfunctionallowsyoutorecallanyofthestoreddatafrommemory,regard-lessofthepositionoftherotaryselectorswitch,exceptOFForSETUP.

When the MR button is activated, the following screen is displayed:• TheflashingcursoridentifiesthelastoccupiedObj.andTestnumber. Here - 47 : 99

• Usethe,,,buttonstoselectthedesiredObj.andTestnumber.

• AfterselectingtheObj.andTest,pressthebuttontoaccessthefirstitemofinformation relative to this measure-ment.

• Toaccessmoredata,pressDISPLAY repeatedly,orGRAPH,ifthemodeselectedbeforethestartofthemeasurementallows.

To exit the MR function,press theMRbuttononceagainor turn theselectorswitchtoanotherposition.

MEMORYRecall Obj. Test Date Time Fct.

47 99 12.15.2003 07:04 625V13 59 12.07.2003 22:39 3800V13 58 11.29.2003 15:47 50V02 03 11.24.2003 15:04 2150V02 02 10.29.2003 21:45 975V02 01 09.30.2003 02:43 5000V01 02 09.02.2003 15:07


4.9 Clearing the MemoryInSET-UP,select“Clearmemory”byusingthebuttontohighlightthisfunction.Pressthebuttontoenterthismode.

To erase the content of one or more specific OBJ : TEST numbers:• Select“SelectDataSetstoClear”bypressingthebutton.• Then, select eachmemory to be erased using the , buttons to

chooseitandthebuttontoselectit.Thebuttonwilldeselectit.• ValidatebypressingDISPLAY.Theoperationisconfirmedbypressing

thebuttonwiththeOKoptionhighlighted,orcancelledbypressingthebuttonwiththeCANCELoptionhighlighted.

Rc reference temperature∆T for R/2Calculate ∆T from MemoryMaxumum Output VoltageSet Default ParameterClear MemoryV Disturbance / V OutputBuzzer

40°C10°C

5100V

30%on


SET-UPClear memory:

Select Data Sets to ClearClear All

SET-UPClear memory: Obj. Test Date Time Fct.

47 99 15.12.2003 07:04 625V13 59 07.12.2003 22:39 3800V13 58 29.11.2003 15:47 50V02 03 24.11.2003 15:04 2150V

SET-UP

!WARNING!All selected data sets

will be cleared!

O.K.

CANCEL

To erase the entire memory:• Select“ClearAll”bypressingthebuttontohighlightitandthebutton

tochooseit.• Theoperationisconfirmedorcancelledbypressingthebuttonwhen

theappropriatechoiceishighlightedasdescribedabove.

SET-UPClear memory:

Select Data Sets to ClearClear All

SET-UP

!WARNING!All data sets

will be cleared!

O.K.

CANCEL


4.10 Calculation of ΔT from Stored DataThecoefficientΔTisusedtocalculatetheinsulationresistanceatatemperatureotherthanthemeasurementtemperature.Itisthetemperaturedifferenceatwhichtheinsulationresistanceconcernedisdividedby2.

Thiscoefficientisvariableanddependsonthetypeofinsulation.Whenitisnotknown,theinstrumentcancalculateitfromthreeormorestoredmeasurements.

NOTE: These 3 measurements must have been made on identical insu-lation but at 3 different temperatures, and the temperatures must have been recorded using the 2nd + TEMP buttons at the same time as the measurements, without applying the correction (Resistance Correction OFF).

• IntheSET-UPmode,select“CalculateΔTfromMemory”andpressthebutton.Thedisplayshowsallvaluesrecordedwithatemperature.

• Selectatleast3measurementsusingthe,,,buttons.

• ΔT is calculated and recorded automatically once 3 stored measure-mentshavebeenselected,andwillbeupdatedifmoremeasurementsare selected.

• Thelargerthenumberofmeasurements,themoreaccuratethecalcula-tionofΔT.

NOTE: This calculation is available only for resistance values < 200GΩ.

Calculate ∆T from MemoryMaxumum Output VoltageSet Default ParameterClear MemoryV Disturbance / V OutputBuzzerPower DownBaud Rate

5100V

10%onon

9600 / RS232


SET-UP ∆T Calculation for R/2 23.7°C Obj. Test Res. Volt. Temp.

47 99 228.5MΩ 5078V 23°C13 59 208.5MΩ 5078V 30°C13 58 178.5MΩ 5078V 37°C02 03 328.5MΩ 5078V 23°C02 02 328.5MΩ 5078V 23°C02 01 328.5MΩ 5078V 23°C


4.11 Maximum Output VoltageIntheSET-UPmenu,select“MaximumOutputVoltage”pressingthebuttontohighlightitandthebuttontochooseit.

Adjustthemaximumoutputvoltageusingthe,buttons.

This function prohibits the use of testvoltageshigher than theselectedmaxi-mum output voltage for the insulationmeasurement.

The instrument can then be used byless experienced personnel for specificapplicationswhere it is importantnot toexceedamaximumtestvoltage.

Example: if the maximum output voltage is set to 750V and the measurement is made in the 5000V switch position, only 750V will be generated.

4.12 List of Error CodesIfaninconsistencyisdetectedwhentheinstrumentisstarteduporinoperation,thedisplayunitindicatesanerrorcode.Theformatofthiserrorcodeisa1or2digitnumber.Thisnumberidentifiestheproblemandtheactiontobetaken.

Here are some examples of possible errors:

Codes from 0 to 9 identify fatal errors in the hardware. The instrument must be returned to AEMC® Instruments for corrective action.

Codes from 20 to 25 identify semi-fatal errors, except for codes 21 and 25. The instrument must be returned to the factory for corrective action.

Error 20 CommunicationfailedError 21 CheckofoptionsfailedError 22 CheckofcontentsfailedError 23 CheckofcalibrationvaluesfailedError 24 CheckofinstrumentidentificationnumberfailedError 25 Checkofprintfilefailed

Fornon-fatalerrors21and25,itisnotnecessarytoreturntheinstrument.SimplyusetheSET-UPmodetorestorethedefaultparameters(SetDefaultParameter).

Data Storage Error: Whenitisimpossibletostoredata,theentirememorymustbeerasedusingthe“ClearMemory”functionintheSET-UPmode(see§4.9).

Calculate ∆T from MemoryMaximum Output VoltageSet Default ParameterClear MemoryV Disturbance / V OutputBuzzerPower DownBaud Rate

5100V

10%onon

9600 / RS232



CHAPTER 5

MEASUREMENT FUNCTIONS

5.1 AC/DC Voltage• Turntherotaryselectorswitchtoanyinsulationposition(otherthanOFFor

SET-UP).

• TheinstrumentisnowautomaticallyinAC/DCvoltagemeasurementmode.

• Thevoltagebetweentheinputterminalsismeasuredatalltimesandindicatedonthedisplaynexttotheinputvoltageheading.

• Also,assoonastheswitchisturned,thefrequencyandtheresidualDCcurrentattheterminalsoftheinstrumentaremeasured.Theresidualcurrentismea-suredinordertoevaluateitseffectontheinsulationmeasurementabouttobeperformed.

NOTE: Measurement is prohibited if an external voltage above a preset value is present at the terminals before pressing START/STOP.

Similarly, if an interference voltage of a preset value is detected during measurement, the measurement is stopped and that voltage is indicated (see V Disturbance / V Output on page 25).

5.2 Insulation MeasurementWhentheswitchisturnedtoaninsulationresistancemeasurementposition,oneoffollowingappears:

Case 1Youselectaninsulationmeasurementwith a fixed/standard test voltage, inmanualmode.

SwitchPositions:500V - 2TΩ1000V - 4TΩ2500V - 10TΩ5000V - 10TΩ

FIXED VOLTAGE

2500 V


230V AC50.0 Hz24.6nA

Time: 22:39


Case 2Youselectaninsulationmeasurementwithoneoftheselectabletestvoltages.

SwitchPosition:50 to 5000V

You can choose from one of the threeselectedvoltagespredefinedinSET-UPusing the and buttons, selectingadjustable voltage 1, 2 or 3, or defineanother voltage by selecting it with the button to highlight the test voltageandadjusting itwith theandbut-tons.The new selected voltagewill notbesavedwhentheinstrumentisshutoffortherotaryswitchismovedtoanotherposition.

Case 3You select an insulation measurementwith a test voltage that varies in steps(thisisthe“StepFunction”mode).

SwitchPosition:Step Voltage

You can choose from the three storedstepvoltageschemesusing theandbuttons.

• Pressing the START/STOP button immediately begins the measurement process.

Ifthebeeperisselectedas“ON”intheSET-UPmode,anaudiblebeepisemit-tedevery10secondstoindicatethatatestisinprocess.

A number of special functions can be performed during the test. Chapter 4describesthesefunctions.

WARNING: Insulation measurements cannot be started if there is an excessively high external voltage on the “+” and “–” terminals.

TheModel5070willautomaticallyinhibittesting.


2300 V


20V AC50.0 Hz24.6nA

Time: 22:39

STEP FUNCTION 1

Test Run Time 08:38:30

Min: 2300V Max: 3900V


1V AC50.0 Hz24.6nA

Time: 22:39


• When the START button is pressed,iftheexternalvoltageoftheterminalsoftheModel5070isgreaterthatthevalueVpeakdefinedintheset-upmodeanddescribednext,theinsulationtestisnotstartedandanaudiblealarmisemitted;theinstrumentthenreturnstoautomaticvoltagemeasurementmode.

Vpeak≥dlStxVN where -Vpeakistheexternalvoltage,(peakorDC)atthe+and–terminals

oftheModel5070. -dlStisthecoefficientthatcanbeselectedinSET-UPat3%

(defaultvalue),10or20%. -VNisthetestvoltageselectedfortheinsulationmeasurement.

Example A: The test is to be conducted at 2500V, dISt is set to 3%. Therefore, before the test starts, a voltage present at the “+” and “-” terminals of 75V will cause the Model 5070 to inhibit testing. (Vpeak = (0.03 x 2500V) = 75V)

Similarly,ifduringtheinsulationtest,anexternalvoltagegreaterthantheVpeak(asdefinedbelow)isdetected,themeasurementisstoppedandthesymbol appearsnexttothevalueoftheexternalvoltagemeasured.

Vpeak≥(dlSt+1.05)xVN, where-Vpeakistheexternalvoltage,(peakorDC)atthe+and–terminals

oftheModel5070. -dlStisthecoefficientthatcanbeselectedinSET-UPat3%

(defaultvalue),10or20%. -VNisthetestvoltageselectedfortheinsulationmeasurement.

Example B: If the conditions defined in Example A were programmed and the test was started, a disturbance voltage (change of voltage) of 2700V would abort the test. (Vpeak = (0.03 + 1.05) (2500V) = 2700V)

Note:ThedlStfactorisselectedtooptimizethemeasurementbuild-uptime.

Ifthereisnoleakagevoltage,dlStcanbeadjustedtoitsminimumvaluetoobtaintheshortestpossiblemeasurementbuild-uptime.

Ifthereisalargeleakagevoltage,dlStcanbeincreasedsothatthemeasurementwillnotbeinterruptedassoonasanegativealternationoccursduringthegenera-tionofthetestvoltage;thishelpsoptimizethemeasurementbuild-uptimeinthepresenceofaleakagevoltage.

• Pressing the START/STOP button again stops the measurementIfthe“programmedtimetest”mode(TimedRunorTimedRun+DD)wasselectedasthetestmode,themeasurementisstopped(withoutpressingtheSTART/STOP button)attheendofthetesttime.


Similarly,iftheDARorPImodeisselectedasmeasurementmodebeforethetest,themeasurementisstoppedautomaticallyafterthetimeprogrammedtocalculatethemhasoccurred(timedefinedinSET-UP).Anumberofspecialfunctionscanbeusedduringthemeasurement(see§4).

5.3 Capacitance MeasurementThecapacitancemeasurement is performedautomatically during the insulationmeasurement,andisdisplayedafterthemeasurementstopsandthecircuithasbeendischarged.

5.4 Residual Current MeasurementTheresidualcurrentcirculatingintheinstallationismeasuredanddisplayedauto-maticallyuponconnectiontotheinstallation,itisallmeasuredduringandaftertheinsulationmeasurement.


CHAPTER 6

OPERATION

NOTE: Charge the instrument fully before use.

6.1 Performing MeasurementsTobeginan insulationresistance test,first insert thecablesasnecessary, thenturntherotaryswitchtotheappropriatetestvoltageposition.

Theinstrumentcanmeasureinsulationvaluesfrom10kΩ to 10TΩ,dependingonthetestvoltageselected-from40Vto5100VDC.

Thescreendisplays:

• Thebatterysymbolandbatterychargecondition

• Thetestvoltageselected• The voltage, frequency and residual

currentattheinputterminals• Thedateandtime

ConnecttheRed(+)andtheBlack(-)cablestothetestobject.ConnecttheBlueGuardjumperandcable,ifrequiredforthetest(seeAppendixA“When to use the Guard Terminal”).

Next,(unlessthestepfunctionmodeisselected)selectthemeasurementmodetobeused(ManualStop,ManualStop+DD,TimedRun,TimedRun+DD,DARorPI)bypressingtheMODEbutton(see§4.2.1)

• PresstheSTART/STOPbuttontobeginthemeasurementtest.

If the voltage present is greater than the maximum allowed value, the measurement will be prohibited.

TheDISPLAYbuttoncanbeusedtoscrollthroughtheinformationavailableduringthetest.Thisinformationdependsonthemeasurementmodeselected(see§4.2.1).Iftheinsulationvaluesdisplayedareveryunstable,adigitalfiltercanbeactivatedbypressingSMOOTHtosmooththem(see§4.5.2).

FIXED VOLTAGE

2500 V


230V AC50.0 Hz24.6nA

Time: 22:39


ThealarmmodecanbeactivatedbypressingtheALARMbutton.Anaudiblebeepwillcontinuouslysound if themeasurement result isbelow thevaluedefined inSET-UP(seepage20).

PresstheSTART/STOPbuttonagaintostopthetest.

Thelastresultremainsdisplayeduntilthenextmeasurementismadeortheswitchisturned.

Whentheinsulationmeasurementhasstopped,thedeviceundertestwillbeauto-maticallydischargedbytheModel5070.

TheDISPLAYbuttoncanbeusedtoviewthetestresultsavailableafterthetest.

Thisinformationdependsonthemeasurementmodeselected(see§4.2.1).

Ifthemeasurementmodewaseither“TimedRun”or“TimedRun+DD”,pressingtheGRAPHbuttondisplaystheinsulationmeasurementversustimecurve(see§4.3.2).

PresstheTEMPbuttontocorrectthemeasurementresulttothereferencetem-peraturedefinedinSET-UP(see§4.10).

6.2 Step Function ModeThisfunctionisbasedupontheprinciplethatidealinsulationproducesthesameresistancenomatterwhatthetestvoltageapplied.

Anynegativevariationofthisresistancemeansthattheinsulationmaybedefective.Theresistanceofdefectiveinsulationwilldecreaseasthetestvoltageincreases.

Thisphenomenon is rarelyobservedwith “low” test voltages, thereforeat least2500Vmustbeapplied.

Theusualtestconditionisavoltageincreasingin5steps,eachlastingfor1minuteminimum.

Assessmentoftheresult:

• A deviation of the resistance= f (test voltage) curve that exceeds 500ppm/Vgenerallyindicatesthepresenceofmoldorotherdeterioration.

• Alargerdeviationorasuddendropindicatesthepresenceoflocalizedphysicaldamagesuchasarcingorperforationoftheinsulation,etc.


Procedure:• IntheSET-UPmenu,select“SetStep

Function1,2or3”byscrollingdownto set Step Function 1, 2 or 3 usingthebutton.Press thebutton toenter the Set-up mode for the pro-fileselected.Thescreenon the rightshows the default profile for StepFunctionNumber3.

• Define the Step Function and thedesirednumberofmeasurementsam-ples (R(t) sample)by scrolling to thedesiredStepusingtheorbuttonsfollowedbythebuttontoaccesstheselectedsteps,voltageandtimevariables.AdjustthevoltagefortheStepbypressingtheorbuttons.Then,pressthebuttontomovetheselectioncursortothedurationsetting.Adjustthehoursandminutesforthestepinthesame fashionused toselect thevoltage.Whenfinished,press thebuttonuntilthecursorisagainintheStepColumn.Repeatthisprocessforeachofthefivesteps.

If a Step is not used, select “---” as the duration. Next, adjust the sample rate by the same procedure using theandbuttons to select and adjust the sample rate.

• OncetheStepFunctionisdefined,turntheselectorswitchtoStepVoltage(thedesiredprofile1,2or3)usingthebuttons.

• Then,startthemeasurementbypressingtheSTART/STOP button.

Duringthemeasurement,thefollowingscreenscanbeaccessedbypressingtheDISPLAYbutton:

10 100 1 10 100 1 10 100 1 10

4078V

kΩ MΩ GΩ TΩ

24.6pARemaining time 00:01:43

234.5M

4078V 24.6pARemaining time 00:01:43

234.5M

∆R∆V∆R/(R*∆V) (ppm/V)Capacitance

MΩ3000V

SET-UPRamp 3 definition: Step Voltage Duration (h:m)

1 1000V 01:00 2 2000V 01:00 3 3000V 01:00 4 4000V 01:00 5 5000V 01:00 Total duration (h:m) 05:00R(t) sample (m:s) 00:20


Attheendofthemeasurement,thefollowingareindicated:

• The difference ΔR in insulation resis-tancebetweenthefinalresistance(withthe highest test voltage) and the initialresistance(withthelowesttestvoltage)

• ThedifferenceΔVbetweenthefinalandinitialtestvoltages

• Theslopeofthecurveinppm/V• Thecapacitance

Pressing the GRAPH button displays theresistanceversusappliedtestvoltagecurve.

Usingtheandbuttons,youcanscrollthroughthevarioussamplesrecordedandforeachsee:• Theinsulationresistancevalue• Theappliedtestvoltage• Thetimeofmeasurement

6.3 Operation ExamplesConnection diagram for measurement of low resistance insulation(e.g. motor)

+

-

MRED

BLACK


234.5M

∆R∆V∆R/(R*∆V) (ppm/V)Capacitance

8.5MΩ4000V

0.28320nF

ResistanceOutput VoltageElapsed Time

30002500200015001000500

50004000300020001000

0 1:00 2:00 3:00 4:00 5:00

MΩ

328.5MΩ5078V DC

04:20


When measuring high levels of insulation(>1GΩ),itisadvisabletousethe“G”guardterminaltoeliminatetheinfluenceofsurfaceleakagecurrents.Theguardisconnectedbetweenthetwomeasurementcontactpoints,andthesurfacesuscep-tibletosurfacecurrents,(e.g.dusty,dampcableortransformerinsulation).Inthiscase,alligatorclipsarepreferabletohand-heldtestprobes.Assoonastheinsulationmeasurementisstopped,thetestcircuitisautomaticallydischargedusingtheinstrument’sinternaldischargefeature.

Connection diagram for measurement of high resistance insulationa) Exampleofamotor(reductionofcapacitiveeffects)

+

G

-

M

REDBLUE

BLACK

BLUE

JUMPER

b) Exampleofacable(reductionofsuperficialleakeffects)

G

-

+External insulator Braid

CableGuard

Insulator

RED

BLUE

BLACK

BLUE

JUMPER


6.4 Printing Measured Values (MODE / PRINT Button)Touseaserialprinter,firstchoosetheappropriatecommunicationbaudrateintheSET-UPmenu,between300...9600baud.Thenprogramtheprintertothe5070format.Therearetwoprintmodes:

• Instantaneousprintingofmeasurement(PRINT)• Printingofrecordeddata(PRINTmemory)

Pressing the PRINT button gives access to the following menu:

• Print result: Immediateprintingofameasurement followingthatmea-surementorafteraccessingvaluesintheMRmode.

• Print memory:Printingofstoreddata.

• Baud rate / Port: BaudrateadjustedintheSET-UPmenu.Thechoicesare300,600,1200,2400,4800,9600orparallel.

After selection of the print mode :

• If the transmission of data to the printer is successful, the COMsymbolflashesatthetopleftofthedisplayunit.

• If a problem occurs, theCOMsymbolremainslitsteadilyatthetopleftofthedisplayunit.

6.5 Instantaneous Printing of Measurements (Print Result)

Whenthisprintmodeisselected,the following are printed,inorder:

• Generalinformationconcerningthemeasurement

• Themeasurementresult

• IftheTEMPfunctionwasactivated,themeasurementresultreferredtothereferencetemperature

• ForaTimedRuntest,thelistofrecordedsamples

To stop printing,movethepositionoftheselectorswitchtoanyotherposition.


Dependingonthefunctionused,thefollowingformatsareobtained:

Any measurement except step function measurementsAEMC Instruments Model 5070

Instrument number: 000 001

Company:...........................

Address:...........................

...................................

Tel.:..................

Fax:...................

Email:.................

Description:.......................

OBJECT: 01 TEST: 01 (printed only in MR mode)

INSULATION RESISTANCE TEST

Date 01.31.2003

Starting time: 14h55

Running time: 00:15:30

Temperature: 23°C

Relative humidity: .... %

Test voltage: 1000 V

Insulation resistance: 385 GOhm

—————————————————-

Rc - calculated resistance 118.5 GOhm

at reference temperature 40°C

with ΔT for R/2 10°C

—————————————————-

DAR (1’/30”) 1.234

PI (10’/1’) 2.345

DD -.—-

Capacitance 110 nF

—————————————————-

Elapsed time Utest Resistance (after timed run test)—————————————————-

00:00:10 1020 V 35.94 GOhm

00:00:30 1020 V 42.0 GOhm

00:00:50 1020 V 43.5 Gohm

...etc...........................................


Date of next test: ../../.....

Remarks:...........................

...................................

Operator: ... .....................

Signature: ........................

Step function measurement

AEMC Instruments Model 5070


Company:...........................

Address:...........................

...................................

Tel.:.................

Fax:...................

Email:.................

Description:.......................

OBJECT: 01 TEST: 01 (printedonlyinMRmode)

STEP FUNCTION TEST

Date 01.31.2003



Temperature: 23°C


————————————————— Step Duration Voltage Resistance

No. h:mm def. actual

—————————————————-

1 0:10 1000 V 1020 V 2.627 GOhm

2 0:10 2000 V 2043 V 2.411 GOhm

3 0:10 3000 V 3060 V 2.347 GOhm

4 0:10 4000 V 3755 V 2.182 GOhm

5 0:10 5000 V 3237 V 2.023 GOhm

ΔR 604 GOhm

ΔV 4000 V

ΔR/(R*ΔV) (ppm/V) -57 ppm


Capacitance 110 nF

—————————————————-

Elapsed time Utest Resistance

—————————————————-

00:00:10 1020 V 2.627 GOhm

00:00:30 1020 V 2.627 GOhm

00:00:50 1020 V 2.627 Gohm

…etc.……………………………………


Remarks:..........................

...................................

Operator:. ... ...................

Signature: ........................

—————————————————-

6.6 Printing Data in Memory (Print Memory)

Whenthisprintingmodeisselected,thecontentofthememoryisdisplayed.

Storedmeasurements tobeprintedareselectedusing the , , ,but-tons.

Here, the measurements selected forprintingare:13 : 5913 : 5802 : 0302 : 02

Oncetheyhavebeenselected,dooneofthefollowing:

• To start printing,pressthePRINTkeyagain.

• To exit without printing,changetherotaryswitchposition.

• To stop printing,changetherotaryswitchposition.

Theprintingofeachgroupofdataisreducedtothemainresults.

PRINT Obj. Test Date Time Fct.

47 99 12.15.2003 07:04 625V13 59 12.07.2003 22:39 3800V13 58 11.29.2003 15:47 50V02 03 11.24.2003 15:04 2150V02 02 10.29.2003 21:45 975V02 01 09.30.2003 02:43 5000V01 02 09.02.2003 15:07


Dependingonthemeasurementperformed,thefollowingformatsareobtained.

Any measurement except step function measurementsAEMC Instruments Model 5070


Company:...........................

Address:...........................

...................................

Tel.:..................

Fax:...................

Email:.................

Description:.......................

OBJECT: 01 TEST: 01


Date 01.31.2003



Temperature: 23°C




—————————————————-

Rc - calculated resist. 118.5 GOhm



—————————————————-

DAR (1’/30”) 1.234

PI (10’/1’) 2.345

DD -.—-

Capacitance 110 nF

OBJECT: 01 TEST: 02


Date 01.31.2003




Temperature: 23°C




—————————————————-

Rc - calculated resist. 118.5 GOhm



—————————————————-

DAR (1’/30”) 1.234

PI (10’/1’) 2.345

DD -.—-

Capacitance 110 nF

…etc.……………………………………


Remarks:......................

...................................

Operator:. ... ...................

Signature: ........................

Step function measurement

AEMC Instruments Model 5070


Company:...........................

Address:...........................

...................................

Tel.:.................

Fax:...................

Email:.................

Description:.......................


OBJECT: 01 TEST: 01

STEP FUNCTION TEST

Date 01.31.2003



Temperature: 23°C


—————————————————Step Duration Voltage Resistance

N° h:mm def. actual

—————————————————-

1 0:10 1000 V 1020 V 2.627 GOhm

2 0:10 2000 V 2043 V 2.411 GOhm

3 0:10 3000 V 3060 V 2.347 GOhm

4 0:10 4000 V 3755 V 2.182 GOhm

5 0:10 5000 V 3237 V 2.023 GOhm

ΔR 604 GOhm

ΔV 4000 V

ΔR/(R*ΔV) (ppm/V) -57 ppm

Capacitance 110 nF

OBJECT: 01 TEST: 03

…etc.……………………………………


Remarks:...........................

...................................

Operator:. ... ....................

Signature: ........................


CHAPTER 7

DATAVIEW® SOFTWARE

7.1 Installing DataView®

For complete information on using the Megohmmeter with DataView, refer to the Help Menu within the Megohmmeter Control Panel in DataView.

DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALL-ING THE SOFTWARE AND DRIVERS.

1. Insert theDataView thumb drive into an availableUSB port on your com-puter. IfAutorun is enabled, anAutoPlaywindowappears on your screen.Click“Openfoldertoviewfiles”todisplaytheDataViewfolder.IfAutorunisnotenabledorallowed,useWindowsExplorertolocateandopentheUSBdrivelabeled“DataView.”

2. WhentheDataViewfolderisopen,findthefileSetup.exelocatedintherootdirectoryoftheUSBdrive,anddouble-clickittoruntheinstallationprogram.

3. TheDataViewsetupscreenappears.


In theupper left cornerof the screen, choose the languageversionof theSetupinterface.(AllSetupscreensanddialogswillimmediatelyappearintheselectedlanguage.)

Inthelowerleftcorneraretheavailableinstallationoptions.InadditiontotheDataViewsoftware,youcanselect“AdobeReader.”ThislinkstotheAdobewebsitewhereyoucandownloadthelatestversionofReader.ThisprogramisrequiredtoviewDataView.pdfdocuments.TheoptionFirmwareUpgradeslinksto thewebsitewhereyoucancheckfornewfirmwareupdatesfor theinstrument.Finally,UserManualsdisplaysalistof.pdffilescontainedintheUSBdrive thataccompaniesDataView. (DataViewalsocomeswithaHelpsystemthatisinstalledwiththeprogramfiles.)

ToinstallDataView,selectDataViewintheOptionslistandclickInstall.

4. SelectthelanguageversionofDataViewyouwanttoinstall(English,French,orSpanish) thenclickNext. (Bydefault, the languageselected instep3 ishighlighted.)

5. Youarenowpromptedtoselectthesoftwareyouwanttoinstall.EachAEMCproductfamilyhasitsownspeciallydesignedControlPanel.Ifyouareper-formingaCompleteinstall,bydefaultallavailableControlPanelsareselected(acheckmarknexttotheControlPanelindicatesitisselected).ControlPan-elstakeupdiskspaceonthecomputer;sounlessyouhaveothertypesofAEMC instruments,we recommend that youselectMegohmmeterandde-selecttherest.YoushouldalsochecktheoptionDataViewCore,whichisarequirementifyouplantocreateDataViewreports.

After you finish selecting and deselectingControl Panels and/orDataViewCore,clickNext.


6. TheSetupprogramnowinformsyouthatitisreadytoinstallDataView.Ifyouwanttoreviewanyofyourpreviousselections,clickthePreviousbuttontoreturntoearlierscreens.Otherwise,clickInstalltobegininstallation.

7. TheInstallShieldprograminstallstheselectedsoftware.Ifanearlierversionofthesoftwareisalreadyinstalledonyourcomputer,foreachselectedpro-gramtheInstallShieldprogramwill:

(a)Askyoutoconfirmtheinstallationoftheprogram.ClickNext.

(b)Displayastatusbarindicatingtheprogressoftheinstallation.

(c)Informyouwhentheprogramisinstalled.

ClickFinishtoinstallthenextselectedprogram.

Ifthesoftwareisnotinstalled(oriftheinstalledsoftwareisthesameversionastheselectedsoftware),thesoftwareisinstalledwithoutrequestingconfirmation. Whenallprogramsare installed,amessageappears informingyouof this.ClickFinishtoreturntotheSetupscreen

8. You cannowselect additionalSetupoptions to install (see step3 above).Whenfinished,clickExit.

9. TheDataViewfoldernowappearsonyourcomputerdesktop,withinwhichistheMegohmmeter iconandtheicon(s)foranyotherControlPanel(s)youhaveinstalled.

7.2 Megohmmeter Control PanelClicking the DataView icon in the DataView folder on your desktop opens thecoreDataViewprogram.ClickingtheMegohmmeterControlPaneliconopenstheMegohmmeterControlPanel.

Ingeneral,coreDataViewfeaturesareforcreating,viewing,editing,andstoringDataViewreports;whiletheControlPanelisforconnectingto,configuring,view-ingmeasurementson,anddownloadingdatafromtheinstrument.YoucanaccessallDataViewfeaturesthrougheithertheDataViewiconortheControlPanelicon.Foruserswhointeractwithmegohmmeterinstruments,werecommendprimarilyusingtheControlPanel.However,therearesituationswhereusingthecoreData-Viewiconmaybemoreconvenientforsomeusers,suchaswhenviewingmultiplearchivedreportsfromdifferentAEMCproductfamilies.

ForfurtherinformationaboutusingtheMegohmmeterControlPanel,consulttheHelpsystemthatcomeswiththeproduct.AccessthisHelpbyclickingtheoptionHelpintheControlPanel’smenubaratthetopofthescreen.


CHAPTER 8

MAINTENANCE

Useonlyfactoryspecifiedreplacementparts.AEMC®willnotbeheldresponsibleforanyaccident,incident,ormalfunctionfollowingarepairdoneotherthanbyitsservicecenterorbyanapprovedrepaircenter.

8.1 Recharging the Battery

Ifthe symbolisflashing,thebatteryneedstoberecharged.

Connect the instrument to the 120VAC power cord via the connector (chargingstartsautomaticallyeveniftheinstrumentisturnedoff).

• If the instrument is charging in the OFF position: thebatterysymbolisdisplayedandthe3barsflashthroughoutthecharging-“Chargingbat-tery”isalsoindicated.Whenthebatteryisfull,thesymbolandits3barsarelitsteadilyand“ChargingFull”isindicated.

• If the instrument is charging in a measurement position: thebatterysymbol flashes.There isno full charge indication.The “ChargingFull”indicationisdisplayedonlywhentheinstrumentisreturnedtotheOFFposition.

Iftheinstrumentisturnedonandthebatteryvoltageis>8V,thenthenormaluseofthedeviceispermitted.

The battery should be replaced by an authorized repair facility recognized by AEMC® Instruments.

WARNING: Changing the battery causes data to be lost from the memory.

PresstheMEM/MRbutton(“OFF”isdisplayed).ProceedwithatotalclearingofmemoryinSET-UP(see§4.8)sotheMEM/MRfunctionscanbeusedagain.


8.2 Fuse ReplacementIfGUARD FUSEappearsonthedisplay,thefusemustbereplaced,takingallthenecessaryprecautionswhenopeninguptheinstrument.

WARNING: Make sure that none of the terminals are connected and that the selector switch is set to the OFF position before opening up the case.

Onlyusethetypeoffuseshownonlabelinsidetheunit’scover:0.1A-FastActing-380V,5x20mm,10kA(Cat. #2119.84)

8.3 Cleaning

WARNING: Disconnect the instrument from any source of electricity.

• Useasoftclothlightlydampenedwithsoapywater.Rinsewithadampclothandthendrywithadrycloth.

• Donotgetwater inside thecase.Thismay lead toelectricalshockordamagetotheinstrument.

• Donotusealcohol,solventsorhydrocarbons.

8.4 StorageIftheinstrumentisnotusedforanextendedtimeperiod(longerthantwomonths),it is recommended thatacompletechargeanddischargeof thebattery isper-formedthreetimesbeforere-usingtheinstrument.

Completebatterydischargecanbeperformed:

• Byremovingthebatteryfromtheinstrumentandapplyinga3Amploadto it.

• Onthe5000Vpositionwiththebacklighton(consumesthemostpower)


APPENDIX A

UTILIZING THE GUARD TERMINAL

• Guardterminalsareusefulwhenmeasuringhighresistancevaluesandforsta-bilizingreadings.

• Surfaceleakageisfundamentallyalowresistancepathinparallelwiththemostimportantresistancepaththroughthebodyoftheinsulation.Theguardtermi-nalcanbeusedtostoptheeffectsofthesurfaceleakagefrominfluencingthemeasurementofresistancethroughtheinsulation.Intheexampleofacable,showninthediagrambelow,connectingtheguardterminaloftheModel5070tothesurfaceoftheinsulationwillredirectsurfaceleakagecurrentsawayfromthetruemeasuredvalueofleakagecurrentfromtheconductorthroughtheinsula-tion.

• The use of the guard terminal ismost important when there is a significantexposedsurfaceinacable.Whentestingtheinsulationattheendofacable,it isnecessarytoeliminatetheerrorfromsurfaceleakagewhichoccurs,par-ticularlyathighresistancevalues.Theguardterminalprovidesathirdterminalwithin the path of the surface leakage.Connect the instrument as shown inFigureA-1.

Conductorto

Line (-)Terminal

Insulationto

GuardTerminal

Shieldto

Earth (+)Terminal

ExposedSurface

The guard terminalis useful whenmeasuring veryhigh resistancevalues.

A B C Outer jacket

Figure A-1 - Shielded Cable

• Connecttheblack(-)testleadtotheconductoratA

• Connectthered(+)testleadtotheshieldlayerofthecableatC

• ConnecttheblueGuard(G)leadtotheinsulationlayerofthecableatB

Ifthereisnoshield,useacopperwirewoundseveraltimesaroundtheexposed


surface.(Note:Ifashieldisnotavailableandyoudonotmakeupashieldaround“B”andconnecttotheguardterminal(-),themeasurementwillbeerroneousandleadtoconfusionastothecable’scondition).Iftheguardterminalisnotconnectedat“B”,theinstrumentmeasuresthecurrent“i”flowingthroughtheinsulationandasurfaceleakagecurrent“i1”.SeeFigureA-2.

A C

B

Ry

Rz

Rx

i1

i

To EARTHTerminal

To LINETerminal

No Connection toGuard Terminal

Figure A-2 - No Guard Terminal Connected

Withtheguardterminalconnected,thesurfaceleakagei1isremovedandhasnoeffectonthereading,SeeFigureA-3.

A C

B

Ry

Rz

Rx

i1

i

To EARTHTerminal

To LINETerminal

To GuardTerminal

Figure A-3 - Guard Terminal Connected


APPENDIX B

SERIAL CABLE REQUIREMENTS

RS-232 SpecificationsTheBaudRatecanbesetto300,600,1200,2400,4800,9600,or“Parallel”(forprintingresultsonparallelprintersviatheoptionalserial-to-paralleladapter)intheSET-UPmode(see§4.1).TheDataformatis:8databits,1stopbit,noparity,Xon/Xoffprotocol.

Serial Printer ConnectionCable,PCRS-232,DB9F/F6ft(forserialprinter) .......................... Cat. #2119.46

2 23 3

5 5

9-pin female connectorto Model 5070

9-pin female connectorto serial printer

Connection to a PC or to a Parallel PrinterCable,PCRS-232,DB9F/F6ftNullModemCable ........................ Cat. #2119.45

2 2

3 3

5 5

9-pin female connectorto Model 5070

9-pin female connectorto serial printer


APPENDIX C

V DISTURBANCE/V OUTPUT FEATURE

TheVDisturbance/VOutputfeature(referredtointhetextofthismanualasdlSt)servestwopurposes.Firstitactsasasafetydeviceinhibitingtheinstrumentfromgeneratingatestvoltagewhenlivesignalsarepresent.Inthesetupmode,youcanchooseapercentageofthetestvoltagethatconstitutesaconditionthatrequiresthetesttobeinhibitedbeforeitstarts.IftheModel5070mea-suresavoltagehigherthantheVDisturbance/VOutputsettingallows,notestvoltagewillbegeneratedwhentheStartbuttonispressed.Thecalculationforthisconditionissimple.Inthesetupmode,youhaveachoicetosettheratioforVDisturbance/VOutput(statedasdlSt)to3,10or20%.Theinhibitvoltageisthencalculatedbymultiplyingthispercentagetimesthetestvoltage.Example:Testvoltageissetto500andtheVDisturbance/VOutputissetto3%there-forethevoltagepresentattheinputterminalsbeforethestartofatestthatwillinhibittestingis(500)(0.03)=15volts.Thetablebelowshowstheinhibitvoltagesforthe4fixedtestvoltagepositionsandthethreeVDisturbance/VOutputpercentages.

Before Testing

Test V Disturbance/V Output Voltage 3% 10% 20%

500 15 50 1001000 30 100 2002500 75 250 5005000 150 500 1000

Ifasuddenchangeinvoltageoccursduringthetest,theformulaforcalculatingVDisturbance/VOutputisslightlydifferent.Itis(VOutput)(1.05+dlst).Using500voltsasthetestvoltageand3%asdlSt,theinhibitvoltagethatmustoccurafteratestisstartedis(500)(1.05+.03)=540volts.Thetablebelowshowstheinhibitvoltagesforthe4fixedtestvoltagepositionsandthethreeVDisturbance/VOutputpercentagesthatmustoccurafterateststarts.

During a Test

Test V Disturbance/V Output Voltage 3% 10% 20%

500 540 575 6251000 1080 1150 12502500 2700 2875 31255000 5400 5750 6250


Repair and CalibrationTo ensure that your instrument meets factory specifications, we recommendthat itbescheduledbacktoourfactoryServiceCenteratone-year intervalsforrecalibration,orasrequiredbyotherstandardsorinternalprocedures.

For instrument repair and calibration:YoumustcontactourServiceCenterforaCustomerServiceAuthorizationNumber(CSA#). This will ensure that when your instrument arrives, it will be trackedandprocessedpromptly.Pleasewrite theCSA#on theoutsideof theshippingcontainer.Iftheinstrumentisreturnedforcalibration,weneedtoknowifyouwantastandardcalibration,oracalibration traceable toN.I.S.T. (Includescalibrationcertificateplusrecordedcalibrationdata).

Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments 15FaradayDrive Dover,NH03820USA Phone: (800)945-2362(Ext.360) (603)749-6434(Ext.360) Fax: (603)742-2346or(603)749-6309 E-mail: [email protected]

(Orcontactyourauthorizeddistributor)

Costs for repair, standard calibration, and calibration traceable to N.I.S.T. areavailable.

NOTE: You must obtain a CSA# before returning any instrument.

Technical and Sales Assistance

Ifyouareexperiencinganytechnicalproblems,orrequireanyassistancewiththeproperoperationorapplicationofyourinstrument,pleasecall,mail,faxore-mailourtechnicalsupportteam:

ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments 200FoxboroughBoulevard Foxborough,MA02035USA Phone: (800)343-1391(Ext.351) (508)698-2115(Ext.351) Fax: (508)698-2118 E-mail: [email protected] www.aemc.com

NOTE: Do not ship Instruments to our Foxborough, MA address.


Limited WarrantyTheMegohmmeterModel5070iswarrantedtotheownerforaperiodoftwoyearsfrom the date of original purchase against defects inmanufacture.This limitedwarrantyisgivenbyAEMC®Instruments,notbythedistributorfromwhomitwaspurchased.Thiswarrantyisvoidiftheunithasbeentamperedwith,abusedorifthedefectisrelatedtoservicenotperformedbyAEMC®Instruments.

Full warranty coverage and product registration is available on our website at www.aemc.com/warranty.html.

Please print the online Warranty Coverage Information for your records.

What AEMC® Instruments will do:Ifamalfunctionoccurswithinthewarrantyperiod,youmayreturntheinstrumenttousforrepair,providedwehaveyourwarrantyregistrationinformationonfileoraproofofpurchase.AEMC® Instrumentswill,at itsoption,repairorreplacethefaultymaterial.

REGISTER ONLINE AT: www.aemc.com

Warranty Repairs

What you must do to return an Instrument for Warranty Repair: First,requestaCustomerServiceAuthorizationNumber(CSA#)byphoneorbyfaxfromourServiceDepartment(seeaddressbelow),thenreturntheinstrumentalongwith thesignedCSAForm.Pleasewrite theCSA#on theoutsideof theshippingcontainer.Returntheinstrument,postageorshipmentpre-paidto:

Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments 15FaradayDrive•Dover,NH03820USA Phone: (800)945-2362(Ext.360) (603)749-6434(Ext.360) Fax: (603)742-2346or(603)749-6309 E-mail: [email protected]

Caution: To protect yourself against in-transit loss,we recommend you insureyourreturnedmaterial.

NOTE: You must obtain a CSA# before returning any instrument.

01/20

99-MAN100283v29

Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments15FaradayDrive•Dover,NH03820USA•Phone:(603)749-6434•Fax:(603)742-2346

www.aemc.com

5070 - aemc instruments · megohmmeter model 5070 7 chapter 2 product features the model 5070...

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