Chauvin Arnoux AEMC 6527 User manual

MEGOHMMETER 6527
ENGLISH User Manual
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Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certifies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be
requested at the time of purchase, or obtained
by returning the instrument to our repair and
calibration facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer.
Serial #: ________________________________
Catalog #: 2126.53
Model #: 6527
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
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2 Megohmmeter Model 6527
Table of Contents
1. INTRODUCTION............................................................................... 4
1.1 International Electrical Symbols................................................5
1.2 DenitionofMeasurementCategories .....................................5
1.3 ReceivingYourShipment..........................................................6
1.4 OrderingInformation.................................................................6
1.4.1 AccessoriesandReplacementParts............................6
2. PRODUCT FEATURES ...................................................................... 7
2.1 Description................................................................................7
2.2 KeyFeatures ............................................................................7
2.3 ControlFeatures .......................................................................8
2.4 Display ......................................................................................9
2.5 ButtonFunctions.....................................................................10
2.6 Auto-OFFFunction .................................................................10
2.7 RangeSwitchPositions ..........................................................11
3. OPERATION .................................................................................. 12
3.1 StartingtheInstrument ...........................................................12
3.2 StoppingtheInstrument..........................................................12
3.3 InsulationResistanceTesting(MΩRange) ............................12
3.3.1 TestVoltage ................................................................12
3.3.2 SpotTesting ................................................................13
3.3.3 RatioTesting ...............................................................13
3.3.4 TipsForSuccessfulInsulationResistanceTesting .........14
3.3.5 InsulationMeasurement-Connections ......................14
3.3.6 InsulationResistanceMeasurementsonMotors........17
3.4 MeasuringMΩInsulationResistance .....................................19
3.5 VoltageMeasurements ...........................................................20
3.6 ContinuityMeasurements .......................................................21
3.6.1 LeadResistanceCompensation.................................22
3.7 ResistanceMeasurements .....................................................22
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Megohmmeter Model 6527 3
4. MAINTENANCE ............................................................................. 23
4.1 BatteryReplacement ..............................................................23
4.2 FuseReplacement..................................................................24
4.3 Cleaning..................................................................................24
5. SPECIFICATIONS........................................................................... 25
5.1 ReferenceConditions .............................................................25
5.2 Specications..........................................................................25
Limited Warranty ...................................................................................28
WarrantyRepairs...................................................................................28
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4 Megohmmeter Model 6527
CHAPTER 1
INTRODUCTION
WARNING
 ThisdevicecomplieswithsafetystandardIEC-61010-1.
 (Ed2–2001)forvoltagesupto600VincategoryIV,atanaltitudeofless
than2000m,indoors,withapollutionlevelofnotmorethan2.
 Thesesafetyinstructionsareintendedtoensurethesafetyofpersons
andproperoperationofthedevice.Ifthetesterisusedotherthanas
speciedinthisdatasheet,theprotectionprovidedbythedevicemay
beimpaired.
• Do not use the instrument in an explosive atmosphere or in the
presenceofammablegasesorfumes.
• Do not use the instrument on networks of which the voltage or
categoryexceedsthosementioned.
• Donotexceedtheratedmaximum voltages between terminals or
withrespecttoground/earth.
• Donotusetheinstrumentifitappearstobedamaged,incomplete,
ornotproperlyclosed.
• Beforeeachuse,checktheconditionoftheinsulationontheleads,
housing, and accessories.Any element of which the insulation is
deteriorated(evenpartially)mustbesetasideforrepairorscrapped.
• Useleadsandaccessoriesratedforvoltagesandcategoriesatleast
equaltothoseoftheinstrument.
• Observetheenvironmentalconditionsofuse.
• Donotmodifytheinstrumentanddonotreplacecomponentswith
“equivalents”.Repairsandadjustmentsmustbedonebyapproved
qualiedpersonnel.
• Replacebatteriesassoonasthe symbolappearsonthedisplay.
Disconnectallleadsbeforeopeningbatterycompartmentcover.
• Replace the defective fuse with a fuse having identical character-
istics. Disconnect all leads before opening the fuse compartment
cover.
• Usepersonalprotectiveequipmentwhenconditionsrequire.
• Whenhandlingprobesorcontacttips,keepyourngersbehindthe
guards.
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Megohmmeter Model 6527 5
1.1 International Electrical Symbols
Signifies that the instrument is protected by double or reinforced insulation.
This symbol on the instrument indicates a WARNING 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/or product damage may
result.
Compliance with the Low Voltage & Electromagnetic Compatibility European
directives (73/23/CEE & 89/336/CEE)
AC – Alternating current
AC or DC – Alternating or direct current
Risk of electric shock. The voltage at the parts marked with this symbol may be
dangerous.
Important instructions to read and understand completely.
Helpful information to acknowledge.
Ground/Earth symbol
In conformity with WEEE 2002/96/EC
1.2 Definition of Measurement Categories
CAT I: For measurements on circuits not directly connected to the
ACsupplywall outlet such asspeciallyprotected lines (mains)
derivedcircuits.
CAT II: Formeasurementsperformedoncircuitsdirectlyconnectedtothe
electrical distribution system (AC supply wall outlet). Examples
aremeasurementsonhouseholdappliancesorportabletools.
CAT III: For measurements performed in the building installation at the
distributionlevelsuchasonhardwiredequipmentinxedinstal-
lationandcircuitbreakers.
CAT IV: Formeasurementsperformedattheprimaryelectricalsupply
(<1000V)suchasonprimaryovercurrentprotectiondevices,
ripplecontrolunits,ormeters.
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6 Megohmmeter Model 6527
1.3 Receiving Your Shipment
Uponreceivingyour shipment, makesurethat the contentsareconsis-
tentwiththe packing list.Notifyyour distributor ofanymissing items. If
theequipmentappearstobedamaged,leaclaimimmediatelywiththe
carrierandnotifyyourdistributoratonce,givingadetaileddescriptionof
anydamage.Savethedamagedpackingcontainertosubstantiateyour
claim.
1.4 Ordering Information
MegohmmeterModel6527..................................................Cat. #2126.53
Includes set of two 5 ft color-coded leads (red/black) with alligator clips, 1 black test probe,
soft carrying case and a user manual.
1.4.1 Accessories and Replacement Parts
Lead–Setof2,Color-coded5ftSafetyLeads
w/Color-codedAlligatorClips(UL),&TestProbe ................ Cat. #2119.01
Case-ReplacementCarryingPouch.................................. Cat. #2126.75
Fuse-Setof5,0.5A,600V(min),HPC,6x32mm............... Cat. #2970.97
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Megohmmeter Model 6527 7
CHAPTER 2
PRODUCT FEATURES
2.1 Description
The Model 6527 is a portable multi-range megohmmeter capable of
measuringinsulationresistancefrom1kΩto 4000MΩ. It has three user
selectabletestvoltagesof250V,500Vand1000V.
The Model 6527 also features a continuity test function with audible
beeperforresistancesunder35Ω,andanoverloadprotectionof600Vrms.
Inadditionitcanmeasureresistanceupto400kΩ.
TheTESTbuttonhasanassociatedlockingfeatureforcontinuoustestsup
tothreeminutes,eliminatingtheneedtomanuallyholddownthebutton.
This lightweight, easy-to-use megohmmeter can be used for most
commonly performed insulation tests, such as on cables, switch gears,
motors,DCgenerators,powertoolsandsmallappliances.
2.2 Key Features
• Insulationtestvoltageselectionsof250V,500Vand1000V
• Measureinsulationto4000MΩ(4GΩ)
• TESTLOCKfeaturefortimesensitivemeasurements
• Autodischargeafterinsulationtest
• AC/DCvoltmeterto600VAC and 1000VDC
• Resistancemeasurementsupto400kΩ
• Continuitymeasurementswith200mAtestcurrent
• Test lead resistance compensation for accurate low resistance
measurements
• AutoHOLDfunctionto“freeze”readings
• Largeandbrightdualdisplaywithbluebacklight
• AutoPowerOff
• Ergonomicover-moldedcasewithback-stand
• ComplieswithInternationalInsulationTestingStandardsincluding
EN61557
• CEmarkedand600VCATIVrating
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8 Megohmmeter Model 6527
2.3 Control Features
HOLD ZERO /
MEGOHMMETER
MODEL 6527
TEST LOCK
TEST
500V
250V
OFF
k
MΩ
1000V
0.1M
0.2
0.5
25
>25V HOLD
LOCK
20 50
200 500
2000
1M
10M
100M
1000M
∞
1
2
3
4
Figure 2-1
1. VΩJack/COMinputjack
2. LCDDisplay(see§2.4)
3. DataHold,TestLockandZero/Backlightbuttons(see§2.5)
4. RotaryFunctionSwitch(see§2.7)
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