AEMC GROUNDFLEX 6474 User manual

ENGLISH User Manual
GROUNDFLEX®ADAPTER 6474
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

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.
NIST traceable calibration is only possible when
the Model 6474 is connected to the Ground Tester
Model 6472.
To obtain NIST calibration (for a nominal charge), the
instrument would need to be returned to our facility,
along with your Ground Tester Model 6472.
The recommended calibration interval is 12 months
and begins on the date of receipt by the customer.
Serial #: ________________________________
Catalog #: ______________________________
Model #: 6474
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

2 GroundFlex®Adapter Model 6474
Table of Contents
1. INTRODUCTION............................................................................... 3
1.1 International Electrical Symbols...........................................................4
1.2 DenitionofMeasurementCategories.................................................4
1.3 ReceivingYourShipment.....................................................................4
1.4 OrderingInformation ............................................................................5
1.4.1 AccessoriesandReplacementParts......................................5
2. GROUNDFLEX®ADAPTER................................................................ 6
2.1 ControlFeatures ..................................................................................6
2.2 GroundFlex®Sensor ............................................................................7
2.2.1 CalibrationofGroundFlex®Sensors .......................................8
2.3 MeasurementsinAUTOMode...........................................................10
2.3.1 PreparationoftheGroundFlex®Adapter...............................10
2.3.2 MakingaMeasurement(ResistanceofLegs) ......................12
2.3.3 OtherMeasurements ............................................................14
2.4 MANUALModeandSWEEPMode ...................................................14
3. SPECIFICATIONS........................................................................... 16
3.1 Electrical.............................................................................................16
3.2 Mechanical.........................................................................................18
3.3 Environmental ....................................................................................18
3.4 Safety.................................................................................................18
4. MAINTENANCE ............................................................................. 19
4.1 Maintenance.....................................................................................19
4.2 Cleaning...........................................................................................19
LimitedWarranty ................................................................................................21
WarrantyRepairs................................................................................................21
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

GroundFlex®Adapter Model 6474 3
CHAPTER 1
INTRODUCTION
WARNING
Thesesafetywarningsareprovidedtoensurethesafetyofpersonnel.
Please read and complywiththeseprecautions:
• Thisinstrumentisprotectedfromaccidentalvoltagesofnotmorethan
50VwithrespecttoearthinmeasurementCATIV.Theguaranteedlevel
ofprotectionofthisequipmentmaybecompromisedifusedinamanner
notspeciedbythemanufacturer.
• Safetyistheresponsibilityoftheoperator.
• Allmetalobjectsorwiresconnectedtotheelectricalsystemshouldbe
assumedtobelethaluntiltested.Groundingsystemsarenoexception.
• Never exceed the maximum rated voltage and current, and the mea-
surementcategory.
• Neverexceedtheprotectionlimits,andalwayscomplywiththecondi-
tionsandplaceofuse,indicatedinthespecications.
• Donotusetheinstrumentoritsaccessoriesiftheyappeardamaged.
• Useaccessories thathave overvoltagecategory andservicevoltages
greaterthanorequaltothoseoftheinstrument(CATIV50V).Useonly
accessoriesthatcomplywithsafetystandards(IEC61010-2-031&32).
• Weartheappropriateprotectivegear(insulatingbootsandgloves).
• CheckthatnoterminalisconnectedandtheswitchissettoOFFbefore
openingthedevice.
• Useonlythechargingunitsuppliedwiththeinstrumenttorechargethe
battery.
• Troubleshootingandmetrologicalvericationproceduresmustonlybe
performedbyqualied,approvedpersonnel,orthefactory.
• NOTE: Thepotentialsonthevariousrodsusedforanearthmeasurement
maybedi󰀨erentifanearbyelectricalinstallationisdefectiveorcertain
weather conditions prevail (thunderstorms). It is up to the operator
to decide whether to continue or postpone measurements in these
situations.
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

4 GroundFlex®Adapter Model 6474
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.
Risk of electric shock. The voltage at the parts marked with this symbol may be
dangerous.
Ground/Earth symbol
In conformity with WEEE 2002/96/EC
1.2 Definition of Measurement Categories
CAT II: Formeasurementsperformedoncircuitsdirectlyconnectedtotheelectrical
distributionsystem.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installation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.
1.3 Receiving Your Shipment
Uponreceivingyourshipment,makesurethatthecontentsareconsistent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.
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

GroundFlex®Adapter Model 6474 5
1.4 Ordering Information
NOTE: The GroundFlex®Adapter Model 6474 only operates in combination
with the Ground Tester Model 6472 Kit - 500ft.
GroundFlex®Adapter Model 6474.................................................Cat. #2136.01
Includes the GroundFlex®Adapter Model 6474, four GroundFlex®sensors (5m/16ft) with
twelve color-coded rings, carrying case for meter, connection lead, two extension leads on H
reel (black/green) with color-coded alligator clips, six BNC extension leads, calibration loop,
three C-clamps, and a user manual.
GroundFlex®Field Kit (Model 6472 and 6474) .............................Cat. #2136.03
Includes the GroundFlex®Adapter Model 6474, Ground Resistance Tester Model 6472,
carrying bag for meter, carrying bag for kit, hard carrying case, optical USB cable, power
adapter 110/240V with power cord 115V US, two 500ft color-coded leads on spools (red/
blue), two 100ft color-coded leads (hand-tied, green/black), one 30ft lead (green), four
T-shaped auxiliary ground electrodes, set of ve spaded lugs, one 100ft AEMC®tape
measure, rechargeable NiMH batteries, and a USB stick with DataView®software, ground
tester workbook and user manual.
1.4.1 Accessories and Replacement Parts
Bag#6-CarryingBagforGroundKits............................................. Cat. #2119.82
TapeMeasure-AEMC®(100ft) .......................................................Cat. #2130.60
Setoftwo,14.5"T-shapedAuxiliaryGroundElectrodes..................Cat. #2135.39
OpticalUSBCable............................................................................Cat. #2135.41
Replacement-OneGroundFlex®(5m /16ft)Sensor.........................Cat. #2135.73
Replacement-ConnectionLeadforModel6472/6474....................Cat. #2135.75
Replacement-OneBNC(15m/50ft)ExtensionLead......................Cat. #2135.76
Replacement-Setof12,GroundFlex®Rings
(red,yellow,brown,orange) .............................................................Cat. #2135.77
Replacement-GreenExtensionLead .............................................Cat. #2135.78
Replacement-BlackExtensionLead...............................................Cat. #2135.79
Replacement-Setof3,C-clamps....................................................Cat. #2135.80
Replacement-CalibrationLoop.......................................................Cat. #2135.82
Replacement-CarryingCase ..........................................................Cat. #2135.83
Replacement-SafetyAlligatorClip(black) ......................................Cat. #2140.53
Replacement-SafetyAlligatorClip(green) .....................................Cat. #2140.69
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

6 GroundFlex®Adapter Model 6474
CHAPTER 2
GROUNDFLEX®ADAPTER
2.1 Control Features
50V CAT IV
1-2-3-4
1-2-3
1-2
1
2
3
4
For Use with the
Ground Tester Model 6472
GroundFlex
®
Sensor
SENSOR TURNS
SENSITIVITY
To Model 6472
Overload
INPUT
1
2
3
4
GroundFlex®Adapter
MODEL 6474
2
4
1
6
5
3
1. Inputs1through4forGroundFlex®sensors
2. ConnectorforconnectionleadtotheGroundTesterModel6472
3. OVERLOAD indicator
4. SENSORTURNSselector:1,2,3or4
5. SENSITIVITYselector:x10,x1orx1/10
6. INPUTSELECTION:1,2,3,4,1-2,1-3or1-4
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

GroundFlex®Adapter Model 6474 7
2.2 GroundFlex®Sensor
TheGroundFlex®sensorsareplacedaroundaconductor(towerlegorpole)and
closedusingascrewconnector,whichispartofthesensor.Thisclosedloopisthen
usedtomakeacontact-freemeasurementofthecurrentowingintheconductor
(leg)itiswrappedaround.
Thesesensorsarecurrentmeasurementclampsbutareabletoencloseobjects
thataremuchlarger.
GroundFlex®sensorsareavailableinlengthsofuptoapprox24ft(8m)andcan
beplacedaroundobjects(suchastowerlegs)uptoinapprox8ftdiameter(2.7m).
50V CAT IV
1-2-3-4
1-2-3
1-2
GroundFlex
®
Sensor
To Model 6472
Overload
INPUT
1
2
3
4
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412

8 GroundFlex®Adapter Model 6474
2.2.1 Calibration of GroundFlex®Sensors
Calibrationisnecessaryforanewsensor,onethatisnolongeridentiedwhena
sensorhasbeenreplaced,ormorethan2lengthsofextensioncableisused.The
calibrationcoe󰀩cientsarethenstoredintheModel6474.
NOTE: Do not move or touch the GroundFlex®sensor or the calibration loop
during the calibration. This could cause errors.
Startbyidentifyingeachsensorusingtheidenticationringsthataresuppliedwith
theModel6474:(1)Brown (2)Red (3)Orange (4)Yellow
• ConnectthecalibrationloopbetweenterminalsHandEoftheModel6472.
• ConnecttheModel6472and6474togetherusingtheconnectioncable.
• ConnecttheGroundFlex®sensorwiththeBrownringtoInput1oftheModel
6474,theonewiththeRedringtoInput2,theonewiththeOrangeringtoInput
3,andtheonewiththeYellowringtoInput4.
• CoiltheGroundFlex®sensorfourtimesaroundinthecalibrationloopandclose
itusingitsscrewconnector.Placetheconnectorasfaraspossiblefromthe
calibration device.
6472 6474
www.ShopAEMC.com
Shop for AEMC products online at: 1.877.766.5412