KYORITSU 6050 User manual

MODEL6050
COMBITESTER(LOOP+RCD)
INSTRUCTIONMANUAL
KYORITSUELECTRICALINSTRUMENTS
WORKS，LTD.

CONTENTS
1.SafeTesting ......................................................................................1
2.Procedureofremovingcover ............................................................4
2.1Methodofremovingthecover ....................................................4
2.2Methodofstoringthecover ........................................................4
3.Features ............................................................................................5
3.1InstrumentLayout .......................................................................5
3.2TestLead ...................................................................................6
3.3OpticalAdapterModel8212 .......................................................6
3.4TestRange(Function) ................................................................7
3.5AppliedStandards ......................................................................7
3.6Features ......................................................................................7
4.Specification......................................................................................9
5.LoopImpedance/PSCTests ........................................................12
5.1PrinciplesofMeasurement ......................................................12
5.2LOOPImpedanceandPSCTesting ........................................18
6.RCDTests ......................................................................................20
6.1PrinciplesofMeasurement .......................................................20
6.2RCDTesting .............................................................................22
7.UcTests .........................................................................................24
7.1PrinciplesofMeasurement .......................................................24
7.2UcTesting .................................................................................24
8.Auto-Test ........................................................................................25
9.Store/Recallameasuredresult.....................................................25
9.1Howtostoredata .....................................................................25
9.2Recallthestoreddata ..............................................................26
9.3Deletethestoreddata ..............................................................27
9.4TransferthestoreddatatoPC..................................................27
10.Batteryreplacement .....................................................................28
11.Servicing .......................................................................................29
12.CaseandStrapassembly .............................................................29

― 1 ―
1.SAFETESTING
Electricityisdangerousandcancauseinjuryanddeath.Alwaystreatit
withthegreatestofrespectandcare.Ifyouarenotquitesurehowto
proceed,stopandtakeadvicefromaqualifiedperson.Thisinstruction
manualcontainswarningandsafetyruleswhichmustbeobservedby
theusertoensuresafeoperationoftheinstrumentandretainitinsafe
condition.Therefore, readthrough theseoperating instructionsbefore
usingtheinstrument.
IMPORTANT:
1. Thisinstrumentmustonlybeusedbyacompetentandtrained
personandoperatedinstrictaccordancewiththeinstructions.
KYORITSUwillnotacceptliabilityforanydamageor injury caused
bymisuseornon-compliancewiththeinstructionsorwiththesafety
procedures.
2. Itisessentialtoreadandtounderstandthesafetyrulescontainedin
theinstructionsorwiththesafetyprocedures.
Thesymbol indicatedonthe instrument means that theusermust
referto therelatedsectionsin themanualforsafe operationofthe
instrument.Besuretocarefullyreadinstructionsfollowingeach
symbol inthismanual.
DANGER isreservedforconditions and actionsthatarelikely to
causeseriousorfatalinjury.
WARNING isreservedfor conditions and actionsthatcancause
seriousorfatalinjury.
CAUTION isreserved for conditions and actionsthat cancause a
minorinjuryorinstrumentdamage.

― 2 ―
DANGER
● Thisinstrumentcorresponds toL-PE: 230V+10%-15%50Hz. (for
someofranges;L-L:400V+10%-15%50Hz)
Besuretouseitwithinthisratedvoltage.
● Whenconductingtestsdonottouchanyexposedmetalwork
associatedwiththeinstallation.Suchmetalworkmaybecomelive
forthedurationofthetest.
● Whentesting,alwaysbesuretokeepyourfingersbehindthe
safetybarriersonthetestleads.
● Forsafetyreasonsonlyuseaccessories(testleads,probes,
cases,etc)designedtobeusedwiththisinstrumentand
recommendedbyKYORITSU. Theuseofotheraccessoriesis
prohibitedastheyareunlikelytohavethecorrectsafetyfeatures.
WARNING
●Never open the instrument case -(exceptforbatteryreplacement
andinthiscasedisconnectallleadsfirst)becausedangerous
voltagesare present. Onlyfully trained andcompetent electrical
engineersshouldopenthe case.Ifafaultdevelops,returnthe
instrumenttoyourdistributorforinspectionandrepair.
● Iftheoverheatsymbolappearsonthedisplay( )disconnectthe
testleadfromthecircuitandallowtocooldown.
● Ifabnormalconditionsofanysortarenoted(suchasafaulty
display,unexpectedreadings,brokencase,crackedtestleads,
etc)donotusethetesterandreturnittoyourdistributorforrepair.
● Neverattempttousetheinstrumentiftheinstrumentoryourhand
iswet.
● Donotrotatefunctionswitchwhentestbuttonisdepressed.

― 3 ―
CAUTION
● Duringtestingitispossiblethattheremaybeamomentary
degradationofthereadingduetothepresenceofexcessive
transientsordischargesontheelectricalsystemundertest.
Shouldthisbe observed, the testmustbe repeated to obtaina
correctreading.Ifindoubt,contactyourdistributor.
● Use a damp cloth and detergent for cleaning the instrument. Do
notuseabrasivesorsolvents.
● Beforeusingthe instrument,please insertthe batteriesrightly in
accordancewiththe"10.BATTERYREPLACEMENT"ofpage
28.Whennotinstallingbatteries,allthefunctionsoftheinstruments
don'twork.

― 4 ―
2.PROCEDUREOFREMOVINGCOVER
Model6050 has adedicated cover toprotect against animpact from the
outsideandpreventtheoperationpart,theLCD,andtheconnectorsocket
frombecomingdirty.Thecovercanbedetachedandputonthebacksideof
themainbodyduringmeasurement.
Fig.2
2.1Methodofremovingthecover
2.2Methodofstoringthecover
Fig.1

― 5 ―
3.FEATURES
3.1InstrumentLayout
1......LCD
2......RCDFUNCTIONSELECTSWITCH
(MEMORYRECALLSWITCH)
3......0°/180°SELECTSWITCH
(ENTERSWITCH)
4......ULVALUESELECTSWITCH
(MEMORYCLEARSWITCH)
5......TESTBUTTON
6......WIRINGCHECKLED
LEDindicationofcorrectpolarityisthattheP-EandP-NLEDsare
lit.PandNarereversedwhenthe reverseLEDislit.
7......"I⊿n/LOOP/PSC"SELECTSWITCH
(MEMORYSELECTSWITCH)
8......MEMORYMODESWITCH
(MEMORYMODEEXITSWITCH)
9......FUNCTIONSWITCH
OperationatMemorymodeisshownin().
16
7
8
9
2
3
4
5
Fig.3

― 6 ―
Black-Neutral
Red-Phase
Green-Earth Fig.7
Fig.4
OpticalAdasperModel8212
(OptionalAccessory)
TestLeadModel7125orModel7121(OptionalAccessory)
LCDDISPLAY
Fig.5
Fig.6
3.2TestLead
TheinstrumentissuppliedwithModel7125Leadatsocketoutletsand
Model7121,whichisanoption,formeasuringdistributionboard.
1.Model7125
2.Model7121(OptionalAccessory)
3.3OpticalAdapterModel8212(OptionalAccessory)
ForModel6050,datacanbetransferredtoPCviaOpticalAdapter
Model8212.Model8212issuppliedwithPCsoftware"KEWREPORT".
Model8212operatesPC/ATcompatiblemachineon
Windows○
R98/ME/2000/XP.Pleasereferto"9.4Transfer the stored
Fig.8

― 7 ―
datatoPC" forfurtherdetails.
Windows○
RisaregisteredtrademarkofMicrosoftintheUnitedstates.
3.4TestRange(Function)
Model6050performsfourfunctions.
1.LOOP.....Loopimpedancetester
2.RCD.......RCDtester
3.Uc..........Contactvoltagetester
4.PSC........Prospectiveshortcircuitcurrenttester
3.5AppliedStandards
Instrumentoperation:IEC/EN61557-1,3,6,10
Safety: IEC/EN61010-1CATⅢ(300V)-instrument
IEC/EN61010-2-031CATⅢ(600V)-testlead
Protectiondegree: IEC60529(IP54)
3.6Features
Model6050hasthefollowingfeatures:
●Wiringcheck ThreeLEDsindicateifthewiringofthecircuit
undertestiscorrect.
●Overtemperature
protection
Detectsoverheatingoftheinternalresistorand
ofthecurrentcontrolMOSFETdisplayinga
warningsymbol( )andautomaticallyhalting
furthermeasurements.
●Phaseangle
selector
RCDtestcanbeselectedfromeitherthe
positive(0°)orfromthenegative(180°)half-
cycleofvoltage.Atbothpolarity,testminimum
(best)andmaximum(worst)triptimes.
●Autodatahold
Measuredresultisbeinghelduntilanyswitch
otherthanMEMswitchispressed.Instrument
isbacktovoltagemeasurementmodewhen
applyingvoltageagainduringdatahold
functionisoperated.

― 8 ―
●ULvalueselector
SelectUL (limitof contact voltage value) 25V
or50V.Where Uc(contactvoltage)exceeds
ULvalueatRCDtesting,"UcH"willbe
displayedwithoutstartingthemeasurement.
●VoltageIndication
WhenconnectingTestLead to circuit, voltage
betweenL-PEisdisplayed.Ifthevoltageis
lowerthan100V,displayedas"VL-PELo".
Andifitishigherthan260V,displayedas"VL-
PE Hi".But on L-L measurement range,
displayedas"VL-PEHi"ifthevoltageis440V
ormore.
●Lowbattery
warning
""symbolappearsinthedisplayifthebattery
voltagedropsbelow8V.
●Autopoweroff Automaticallyswitches the instrumentoff after
aperiodofapproximately10minutes.
●Display
Theliquidcrystaldisplayhas31/2digitswitha
decimalpointandunitsofmeasurement(V,
Ω,A,kA,mA,ms)
●Datamemory,
Communication
facility
Canstore300measuredresult.
DatacanbetransferredtoPCviaOptical
AdapterModel8212.
●Optional
Accessory
1)Model7121formeasuringdistributionboard
orlightingcircuittestlead.
2)OpticalAdapterModel8212(withPC
software"KewReport")
B
●AutoTest
InstrumentbecomesAutotestmodebyturning
Test button to right and locked it. Under Auto
testmode,teststartsautomaticallyonlyby
connectingTestLeadtoameasuringcircuit.

― 9 ―
4.SPECIFICATION
MeasurementSpecification
Function Range RatedVoltage
(AC)
Test
Current Accuracy
LOOP
PSC
Function
Uc
20Ω L-PE:
+10％
230V 50Hz
-15%
3A
15mA
15mA
15mA
3A
max15mA
5mAonlyat
I⊿n=10mA
±(3%rdg+8dgt)
±(3%rdg+8dgt)
AtL-Lmeasurement:
±(3%rdg+12dgt)
±(3%rdg+8dgt)
PSCaccuracyisa
derivedfrom
measuredloop
impedance
specification.
200Ω
2000Ω
200A
2000A
20kA
L-PE:
+10%
230V 50Hz
-15%
L-L:
+10%
400V 50Hz
-15%
L-PE:
+10%
230V 50Hz
-15%
L-L:
+10%
400V 50Hz
-15%
L-PE:
+10%
230V 50Hz
-15%
Range
100V
RatedVoltage
(AC)
L-PE:
+10%
230V 50Hz
-15%
Test
Current Accuracy
+5%〜+15%
±8dgt

― 10 ―
Function
Voltage
Measurement
Range
100-260V
L-Lcorrespoudingrange:
100-440V
RatedVoltage
(AC)
100-260V
L-Lcorrespoudingrange:
100-440V
Accuracy
±(2%rdg+4dgt)
RCD
RatedVoltage
(AC)
L-PE:
+10%
230V 50Hz
-15%
Accuracy
±(1%+3dgt)
Function TripCurrent TripTime
×1/2
×1
×5
DC
AutoRamp
-8%〜-2%
+2%〜+8%
±10%
±4%
RCDTripCurrent(I⊿n)andTripCurrentDuration
RCDTrip
Current
Duration
(ms)
RCDTripCurrentI⊿n(mA)
×1/2
×1
×5
DC
Auto
Ramp
10
1000
1000
200
1000
30
1000
1000
200
1000
100
1000
1000
200
1000
300
1000
1000
n.a.
1000
500
1000
1000
n.a.
200
1000
1000
200
n.a.
n.a.
n.a.
Goesupby10%from20%to110%ofI⊿n.
300ms×10
n.a.:notapplicable
●Instrumentdimensions
●Instrumentweight
186×167×89mm
980g

― 11 ―
●Reference
conditions
Specificationsarebasedonthefollowing
conditionsexceptwhereotherwisestated.
1.Ambienttemperature:23±5℃
2.Relativehumidity:45%to75%
3.Position:horizontal
4.ACpowersource:230V,50Hz
5.Altitude:Upto2000m
●Operating
temperatureand
humidity.
0to40℃,relativehumidity85%orless,no
condensation.
●Storage
temperatureand
humidity.
-20to+60℃,relativehumidity85%orless,no
condensation.
●Symbolsusedon
theinstrument
FEquipment protected throughout by
DOUBLEINSULATION or REINFORCED
INSULATION.
Caution(refer toaccompanying instruction
manual)
●Batterytype
EightR6orLR6batteries
Measurementtimes:approx800timesor
more.(Measureattheintervalof30seconDC
10mArangeofRCDfunction.)
●OperatingErrorsofLoopimpedance(IEC61557-3)
Theinfluencing variationsused forcalculating theoperating errorare
denotedasfollows:
Temperature:0℃ and40℃
Phaseangle:Ataphase0° to18°
Systemfrequency:49.5Hzto50.5Hz
Systemvoltage:230V+10%-15%
Supplyvoltage:8Vto13.8V
Range
20Ω
200Ω
2000Ω
Measuringrangetokeep
operatingerror
0.4〜19.99Ω
20.0〜199.9Ω
200〜1999Ω
Maximumpercentage
operatingerror
±30%

― 12 ―
5.LOOPIMPEDANCE/PSCTESTS
5.1PrinciplesofMeasurement
5.1-1MeasurementofFaultLoop ImpedanceandProspectiveFault
Current
Ifan electrical installation isprotected by over-current protective devices
includingcircuitbreakersorfuses,theearthfaultloopimpedanceshouldbe
measured.
Intheeventofafaulttheearthfaultloopimpedanceshouldbelowenough
Function Operatingerroroftripcurrent
×1/2 -10%〜0%
×1 0%〜+10%
×5 0%〜+10%
AutoRamp -10%〜+10%
●OperatingErrorsoftripcurrent(IEC61557-6)
Theinfluencingvariationsusedforcalculatingtheoperatingerrorare
denotedasfollows:
Temperature:0℃ and40℃
Earthelectroderesistance:
In(mA)
10
30
100
300
500
1000
Earthelectroderesistance(Ω)
UL50V
2000
600
200
130
80
40
UL25V
2000
600
200
65
40
20
table.1
Systemvoltage:230V+10%-15%
Supplyvoltage:8Vto13.8V

― 13 ―
(andtheprospectivefaultcurrenthighenough)toallowautomatic
disconnectionoftheelectricalsupplybythecircuitprotectiondevicewithina
prescribedtimeinterval.
Everycircuitmustbetestedtoensurethattheearthfaultloopimpedance
valuedoesnotexceedthatspecified or appropriate for theover-current
protectivedeviceinstalledinthecircuit.
ForaTTsystemtheearthfaultloopimpedanceisthesumofthefollowing
impedances;
●Impedanceofthepowertransformersecondarywinding.
●Impedanceofthephaseconductorresistancefromthepowertransformer
tothelocationofthefault.
●Theimpedanceoftheprotectiveconductorfromthefaultlocationtothe
localearthsystem.
●Resistanceofthelocalearthsystem(R).
●Resistanceofthepowertransformerearthsystem(Ro).
ForTNsystemstheearthfaultloopimpedanceisthesumofthefollowing
impedances.
●Impedanceofthepowertransformersecondarywinding.
●Impedanceofthephaseconductorfrom the power transformer tothe
locationofthefault.
●Impedanceoftheprotectiveconductorfromthefaultlocationtothepower
transformer.
Fig.9

― 14 ―
InaccordancewiththeinternationalstandardIEC60364foraTTsystemthe
followingconditionshallbefulfilledforeachcircuit.
RAmustbe<
50/la
where;
RAisthesumoftheresistancesofthelocalearthsystemRandthe
protectiveconductorconnectingittotheexposedconductorpart.
50Visthemaximumvoltagelimit(itmaybe25Vincertaincircumstances).
laisthevalueofcurrentthatcausesautomaticdisconnectionofthe
protectivedevicewithin5seconds.
Whentheprotectivedeviceisaresidualcurrentdevice(RCD),Iaistherated
residualoperatingcurrentI⊿n.
ForexampleinaTTsystemprotectedbyanRCDthemaximumRAvalues
areasfollows;
Fig.10
RatedresidualoperatingcurrentI⊿nmA
10
5000
2500
30
1667
833
100
500
250
300
167
83
500
100
50
1000
50
25
RA(at50V)Ω
RA(at25V)Ω

― 15 ―

Uo(Volts)
120
230
400
>400
T(seconds)
0.8
0.4
0.2
0.1
Fig.11
PracticalexampleofverificationoftheprotectionisaTTsystemaccordingto
theinternationalStandardIEC60364.
Forthisexamplethemaximumvalueis1667Ω,thelooptesterreads12.74
ΩandconsequentlytheconditionRAis<
50/laismet.
ItisfundamentalforthisexampletotestalsotheRCDtoensurethat
operationtakesplacequicklyenoughtorespectthesafetyrequirement.
AccordingtotheinternationalStandardIEC60364forTNsystemthe
followingconditionshallbefulfilledforeachcircuit:
Zs<
Uo/la
Where;
Zsistheearthfaultloopimpedance.
Uoisthenominalvoltagebetweenphaseandearth.
la is the current that causes the automatic disconnection of the protective
devicewithinthetimestatedinthefollowingtable.

― 16 ―
Note:
●Foradistributioncircuitadisconnectiontimenotexceeding5sis
permitted.
●When the protective device is a residual current device (RCD),la is the
ratedresidualoperatingcurrentI⊿n.
ForinstanceinaTNsystemwithanominalvoltageofUo=230Vprotected
bytypegGfusesthelaandmaximumZsvaluescouldbe:
6
10
16
20
25
32
40
50
63
80
100
Ia(A)
28
46
65
85
110
150
190
250
320
425
580
Zs(Ω)
8.2
5
3.6
2.7
2.1
1.53
1.21
0.92
0.71
0.54
0.39
Ia(A)
47
82
110
147
183
275
320
470
550
840
1020
Zs(Ω)
4.9
2.8
2.1
1.56
1.25
0.83
0.72
0.49
0.42
0.27
0.22
Rating
(A)
Disconnectingtime5s Disconnectingtime0.4s
Iftheprospectivefaultcurrentismeasured,itsvaluemustbehigherthanthe
lavalueoftheprotectivedeviceconcerned.


― 17 ―
PracticalexampleofverificationoftheprotectionisaTTsystem
accordingtotheinternationalStandardIEC60364.
Fig.12
ThemaximumvalueofZsforthisexampleis2.1Ω(16ampgGfuse,0.4
seconds).The loop tester reads 1.14Ωand consequently the condition
Zs<
Uo/laismet.
5.1.2PrinciplesoftheMeasurementofLineImpedanceand
ProspectiveShortCircuitCurrent
Lineimpedanceistheimpedance,whichismeasuredbetweenPhase-
terminalLandNeutral-terminal N of single-phasesystem,orbetween
twophasesofthree-phasesystem.Measurementprincipalusedinthis
instrumentisthesameasitforFaultloopimpedancemeasurement,but
measurementisperformedbetweenTerminalLandN,orbetweentwo
phases.
Breakingcurrentcapacityof installed over-current protectiondevices
shouldbehigherthanProspectiveShort-Circuitcurrent,otherwiseitis
necessarytochangetheratedcurrentofinvolvedover-current
protectiondevice.

― 18 ―
Methodof Impedancetest between Line and Neutral and Prospective
ShortCircuitedCurrenttest
MethodofImpedancetestbetweenLineandLineandProspective
ShortCircuitedCurrenttest
5.2LOOPImpedanceandPSCTesting
5.2.1Preparation
(1)TurnFunctionswitchandpowerontheinstrument.SelectLOOPor
PSC.
(2)Select the range foratestwith"I⊿n/LOOP/PSC"SELECT
SWITCH. By pressing "I⊿n / LOOP / PSC" SELECT SWITCH, ▼
markonLCDshiftsandcanselecteachrange.

Fig.13

Fig.14