YOKOGAWA EY200 User manual

IM EY200-JA: Japanese
IM EY200-EN: English
5th Edition: Feb. 2018 (KYOU)
この取扱説明書は，いつでも使用できるよう大切に
保管してください。
Store this manual in a safe place for future reference.
Model EY200
ディジタル接地抵抗計
Digital Earth Tester
User’s
Manual
保証書付

21
Introduction
ThankyouforpurchasingourClamp-onProcessMeter.
Thefollowingmanuals,includingthisone,areprovidedasmanuals
fortheEY200.
Readthemalongwiththismanual.
IMEY200-EN  Thismanual
IMCROHS-EY200  DocumentforChina
IMEY200-93Z2  DocumentforKorea
ContactinformationofYokogawaofficesworldwideisprovidedon
thefollowingsheet.
PIM113-01Z2 Inquiries (Listofworldwidecontacts)

22
Contents
Introduction....................................................................................................................21
1.SafetyPrecautions...............................................................................................23
2.Features......................................................................................................................26
3.Specifications...........................................................................................................27
4.Components..............................................................................................................30
5.PreparationforMeasurement....................................................................31
5-1BatteryVoltageCheck............................................................................31
5-2ConnectingTestProbes.........................................................................31
6.OperatingInstructions.....................................................................................31
6-1PrincipleofMeasurement.....................................................................31
6-2PreciseMeasurement...............................................................................32
6-3SimplifiedMeasurement........................................................................33
7.BatteryReplacement........................................................................................36
8.NotesonHousingCase&Accessories...............................................37
8-1CaseLid..............................................................................................................37
8-2HowtoFitStrapBelt..............................................................................37
9.BeforeSendingforService/Calibrationcycle............................38
10.SalesinEachCountryorRegion............................................................39

23
1. Safety Precautions
Thisproductisdesignedtobeusedbyapersonwithspecialized
knowledge.
Whenoperatingtheinstrument, besuretoobservethe
cautionarynotesgivenbelowtoensurecorrectandsafeuseofthe
instrument.If youuse theinstrumentinanywayotherthanas
instructedinthismanual,theinstrumentsprotectivemeasures
maybeimpaired.
This manualisanessentialpartoftheproduct;keepitasafe
placeforfuturereference.
YOKOGAWAisbynomeansliableforanydamageresultingfrom
useoftheinstrumentincontradictiontothesecautionarynotes.
#WARNING Indicatesa hazard thatmayresultintheloss oflifeorseriousinjuryof the userunlessthe
describedinstructionisabidedby.
#CAUTION
Indicatesahazardthatmayresult in aninjury
totheuserand/orphysicaldamage to the
productorotherequipmentunlessthe described
instructionisabidedby.
The following safety symbols are used on the instrument and in this
manual.
#Danger! Handle with Care.
Thissymbolindicatesthattheoperatormustrefertoan
explanationintheUsersManualinordertoavoidriskof
injuryordeathofpersonnelordamagetotheinstrument.
Double Insulation
Thissymbolindicatesdoubleinsulation.
Earth TERMINAL
Thissymbolindicatesground.

24
Measurement Category
#WARNING
TheinstrumentisdesignedformeasurementcategoryIII.
Donotusetheinstrumentfor measurements inlocationsfalling
thatfallundermeasurementcategoryIV.
Measurement
category
Description Remarks
O
(None,Other)
Othercircuitsthatarenot
directlyconnecttoMEAINS.
Circuitsnot
connectedtoa
mainspowersource.
CATII Formeasurementpreformedon circuitsdirectlyconnectedtothe
low-voltageinstallation.
Appliances,
portableequipment,
etc.
CATIII Formeasurementpreformedin
thebuildinginstallation. Distributionboard, circuitbreaker,etc.
CATIV Formeasurementpreformed atthesourceofthelow-voltage
installation.
Overheadwire,
cablesystems,etc.

#WARNING
•Donotusethetestleads (98074) forvoltagesexceeding33
Vrms,46VACpeakor70VDC.
•Whenmeasuring"earthvoltage",usethe2Ptestleads(98075)
andthesafetyalligatorclips(CATIII).The2Ptestleadswhen
usedtogetherwiththetestprobefallundercategoryII.
•Donotusethetestleads when thetestprobesorthesafety
alligatorclipsareloose.
Donotusethetestleadswithoutthetestprobesorthesafety
alligatorclips.

25
#WARNING
•This instrument isaearthtesterthatcanmeasureearth
resistance(earthvoltage).
Donotusethisinstrumentforotherpurpose.
•Donotusetheinstrumentifthereisaproblemwithitsphysical
appearance.
•Usethetestleadssupplied by YOKOGAWAwiththis
instrument.
•Make surethattherangeselectorswitchis set toadesired
positionbeforemakingmeasurement.
•Donotmakemeasurementinthepresenceofflammablegasses.
Otherwise,theuseofthemay cause sparkling,whichleadsto
anexplosion.
•Never attempt toconnectthetestprobeifthe instrument or
yourhandiswet.
•Donotapplyanelectricalquantityexceedingtheallowablelimit
ofameasuringrange.
•Never openthebatterycompartmentcoverwhilemaking
measurement.
•Neverattempttomakemeasurement, if anyabnormal
conditionsarenoted,suchasbroken case, crackedtestprobe
andexposedmetalparts.
•Neverturntherangeselectorswitchwithtestprobeconnected
totheequipmentundertest.
• Donotreplacebatterieswhenthesurfaceoftheinstrumentiswet.
•AlwayssettherangeswitchtotheOFFpositionbeforeopening
thebatterycompartmentcoverforbatteryreplacement.
•OnlyYokogawaservicepersonnelareauthorizedtoremove
thecasingordisassembleormodify the instrument. Do
notattempttorepairtheinstrument yourself, asdoingsois
extremelydangerous.Whentheinstrument needs aninternal
inspectionorcalibration,contactYokogawaorthedealerfrom
whomyoupurchasedtheinstrument.
#CAUTION
Theinstrumentisfordomesticuse (Class B)andmeetsthe
electromagneticcompatibilityrequirements.

26
#CAUTION
•Make surethatthetestprobesaresecurely connected tothe
terminaloftheinstrument.
•Besure to settherangeselectorswitchtothe OFF position
afteruse.
Whentheinstrumentwillnotbeinuseforalongperiodoftime,
placeitinstorageafterremovingthebatteries.
•Donotexposethe instrument tothedirectsun,extreme
temperatureandhumidityordewfall.
•Useadampclothsoakedinwateror neutral detergentfor
cleaningtheinstrument.
Donotuseabrasivesorsolvents.
•Whentheinstrumentiswet,makesureto let it drybefore
puttingitinstorage.
2. Features
ModelEY200isanearthresistance tester fortestingpower
distributionlines,in-housewiringsystem,electricalappliancesetc.
Italsohasanearthvoltagerangeforearthvoltagemeasurement.
•DesignedtosafetystandardIEC61557.
•ReferencetoIEC60529:Degrees of protectionprovidedby
enclosures(IP54).
Measurement canbemadeevenunderadverseweather
conditions.
•Large,easy-to-readLCDdigitaldisplay.
•2PTestleads(forsimplifiedmeasurement)hasastructurethat
boththeSafetyalligatorclipandtheTestprobeareavailable.
•Warnswhenearthresistanceofauxiliaryearthspikesexceeds
thepermissiblelimit.
•Convenientcarryingsoftbagforaccessoriesetc.

27
3. Specifications
Measuring Range and Accuracy (at23±5℃,RH75%orless)
Range Measuring Range Accuracy
Earthvoltage
˜V* 0to199.9V ±(1.0%rdg+4dgt)
Earth
Resistance
20Ω 0to19.99Ω
±(2.0%rdg+0.1Ω)(0to19.99Ω)
±(2.0%rdg+3dgt)(20Ωormore)
(Auxiliaryearthresistance100Ω±5%)
200Ω 0to199.9Ω
2000Ω 0to1999Ω
*˜VRange=Earthvoltage(Seriesinterferencevoltage)
EMC Standards
EN61326-1ClassB,EN61326-2-2,
EN55011ClassBGroup1
EMCRegulatoryArrangementinAustraliaandNewZealand
KoreaElectromagneticConformityStandard
( 한국 전자파적합성기준 )
RFfieldstrength=≤1V/m,totalaccuracy:specifiedaccuracy
RFfieldstrength=3V/m,totalaccuracy:specified accuracy
+5%ofrange
Safety Standards
EN61010-1,EN61010-2-030
MeasurementcategoryIII(CATIII)300V
Indooruse,Altitude2000morless,Pollutiondegree2
EN61010-031
Standards
CompliantwithEN61557-1,EN61557-5,IEC60529(IP54)
Environmental standard
EN50581
Monitoringandcontrolinstrumentsincludingindustrial
monitoringandcontrolinstruments
Measuring Method
Earthvoltagemeasurement*
Meanvalue
Earthresistancemeasurement
Constantcurrentinverter
Measuringcurrent: Approx.AC3mA(at20Ωrange)
Frequency: Approx.820Hz

28
Maximum Operating Error
Operatingerror(B)isanerrorobtainedwithin the rated
operatingconditions,andcalculatedwiththe intrinsic error
(A),whichisanerroroftheinstrumentused,andtheerror(Ei)
duetovariations.
B=±(
｜ A ｜ +1.15(E12+E22+E32+E42+E52+E72+E82))
 A :Intrinsicerror
E
1 :Variationduetochangingtheposition
E
2 :Variationduetochangingthesupplyvoltage
E
3 :Variationduetochangingthetemperature
E
4 :Variationduetoseriesinterferencevoltage
E
5 :Variationduetoresistanceoftheprobesand
auxiliaryearthelectroderesistance
E
7 :Variationduetochangingthesystemfrequency
E
8 :Variationduetochangingthesystemvoltage
Range to keep the maximum operating error
Measurementrangewithin which themaximumoperating
error(±30%)applies.
20Ωrange: 5to19.99Ω
200Ωrange: 20to199.9Ω
2000Ωrange:200to1999Ω
Battery life
Number of measurement:3300timesormore(Measure10
Ωfor5secon20Ω range andtakeapausefor25sec/using
manganesebatteries)
Operating Temperature and Humidity
0to40℃ ,relativehumidity85%orless(nocondensation)
Storage Temperature and Humidity
-20to60℃ ,relativehumidity75%orless(nocondensation)
Power Source
9VDC:Six(6)1.5Vmanganesebatteries(R6P,AA-size)or
 Six(6)1.5Valkalinebatteries(LR6,AA-size)
Overload Protection
Earthvoltageranges:300VAC(1minute)
Earthresistanceranges:280VAC(10seconds)(betweenE
andP,EandCterminals)
Insulation Resistance
5MΩormoreat500Vbetweentheelectricalcircuitandthe
housingcase

29
Dielectric Strength (Withstand Voltage)
3700V ACforoneminutebetweentheelectrical circuit and
thehousingcase
Dimensions
Approx.105(L)158(W)70(D)mm
Weight
Approx.550g(includingbatteries)
Accessories
Product Name Model No. Quantity
TestLeads
(Red20m,Yellow10m,Green5m) 98074 1set
AuxiliaryEarthSpikes 98070 2
2PTestLeads
(Red,Black/Green) 98075 1set
SoftCase 93041 1
ShoulderStrap(forEY200) 99018 1
UsersManual(Japanese/English) 1
BatteriesR6P 6
*NamePlateinEnglish(PartNo.L4058EA)