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Kyoritsu Multimeter KEW 2433R

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INSTRUCTIONMANUAL
KEW SNAP
 
2433R
KEW SNAP Series
LEAKAGECURRENTTESTER
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.,
TOKYO, JAPAN
This instrument has been designed and tested according to IEC
Publication
61010
: Safety Requirements for Electronic Measuring
Apparatus. This instruction manual contains warnings and safety
ruleswhichmustbeobservedbytheusertoensuresafeoperation
ofthe instrument and to retain it in safe condition. Therefore, read
through these operating instructions before starting using the
instrument.
#
WARNING
Readthrough andunderstand instructions containedin this
manualbeforestartingusingtheinstrument.
Save and keep the manual handy to enable quick reference
whenevernecessary.
Theinstrumentistobeusedonlyinitsintendedapplications.
Understandandfollowallthesafetyinstructionscontainedin
themanual.
Failuretofollowtheinstructionsmaycauseinjury,instrument
damage and/or damage to equipment under test. Kyoritsu
is by nomeans liable for any damage resultingfrom the
instrumentincontradictiontothiscautionarynote.
The symbol
#
indicated on the instrument means that the user
mustrefertorelatedpartsof themanual forsafeoperationofthe
instrument. Be sure to carefully read the 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
minorinjuryorInstrumentdamage.
Thefollowingsymbolsareusedandmarkedontheinstrumentand
intheinstructionmanual.Pleasecarefullycheckbeforestartingto
usetheinstrument.
#
Refertotheinstructionsinthemanual.
This symbol is marked where the user must refer to the
instruction manual so as not to cause personal injury or
instrumentdamage.
Indicates an instrument with double or reinforced
insulation.
Indicates that this instrument can clamp on bare
conductorswhen measuringavoltage correspondingto
the applicable Measurement category, which is marked
nexttothissymbol.
IndicatesAC(AlternatingCurrent).
#
DANGER
Never make measurement on a circuit having potential of
300
VACorgreater.
Do not attempt to make measurement in the presence of
flammablegasses.Otherwise,theuse of theinstrument may
causesparking,whichleadstoanexplosion.
Thetransformerjaws aremadeof metalandtheir tipsarenot
completelyinsulated.Beespeciallycarefulaboutthepossible
shorting where the equipment under test has exposed metal
parts.
Neverattempttousetheinstrumentifitssurfaceoryourhand
is
wet.
Do not exceed the maximum allowable input of any
measurementrange.
Never open the battery compartment cover when making
measurement.
Neverfry to make measurement if any abnomal conditions.
suchasbrokenTransformerjawsorcaseisnoted.
The instrument is be used only in its intended applications or
conditions. Otherwise, safety functions equipped with the
instrument doesn
t work, and instrument damage orserious
personalinjurymaybecaused.
Keepyourfingersandhandsbehindtheprotectivefingerguard
duringmeasurement.
#
WARNING
Never attempt to make any measurement, if any abnormal
conditionsarenoted,suchasbrokencase,crackedtestleads
andexposedmetalparts.
Do not install substitute parts or make any modification to
the instrument. Return the instrument to Kyoritsu or your
distributorforrepairorre-calibration.
Do not try to replace the batteries if the surface of the
instrumentiswet.
Always switch off the instrument before opening the battery
compartmentcoverforbatteryreplacement.
#
CAUTION
Make sure that the range selector switch is set to an
appropriatepositionbeforemakingmeasurement.
Do not expose the instrument to the directsun, extreme
temperaturesordewfall.
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.
Usea dampcloth and detergentfor cleaningthe instrument.
Donotuseabrasivesorsolvents.
MeasurementCategory:
Toensuresafe operationof measuring instruments,IEC
61010
establishessafetystandardsforvariouselectricalenvironments,
categorized as O to CAT IV, and called measurement
categories.Higher-numberedcategoriescorrespondtoelectrical
environments with greater momentary energy, so a measuring
instrument designed for CAT III environments can endure
greatermomentaryenergythanonedesignedforCATII.
O :Circuits whichare not directly connected to the mains
powersupply.
CATII :Electrical circuits of equipment connected to an AC
electricaloutletbyapowercord.
CATIII :Primary electrical circuits of the equipment connected
directly to the distribution panel, and feeders from the
distributionpaneltooutlets.
CATIV:The circuit from the service drop to the service
entrance, and to the power meter and primary over-
currentprotectiondevice(distributionpanel).
Incoming wire
:
Device which is
not directly
connected to the
mains power supply
Socket
Interior wiring
2. FEATURES
DigitalclamptesterforACleakagemeasurement.
Accuratetrue-RMSreadingofACcurrentwithdistortedwaveform.
Least affected by external magnetic field, providing wide
measuringrangefromverysmalltolargecurrents.
Designed to safety standard IEC
61010
-
2
-
032
: Measurement
categoryCAT
,
300
Vandpollutiondegree
2
.
Teardrop shapedjawsfor ease of usein crowdedcable areas
andothertightplaces.
Dataholdfunctiontoallowforeasyreadingsindimlylitorhard-to-
reachlocations.
Providesfiltering function toremove high frequency generated by
suchequipmentasinverters.
Peakhold function to allow for measurementof current variation
asshortas
10
msec.
Auto-power-offfunctionpreventsunnecessarypowerconsumption
Dynamicrangeof
4200
countsfullscale.
Largeeasy-to-readLCDdisplaywithletterheightof
13
mm.
Operationconfirmingbeeps.
Insulationbarrieratthetipoftransformerjawsforimprovedsafety.
3. SPECIFICATIONS
Measuringrangesandaccuracy(Sinewave)
Range Resolution MeasuringRange Accuracy(Frequencyrange)
40
mA
0
.
01
mA
0
40
.
00
mA
0〜100A
 ±
1
.
0
%rdg
±
5
dgt (
50
/
60
Hz)
 ±
2
.
5
%rdg
±
10
dgt (
20
Hz
1
kHz)
100〜300A
 ±
1
.
0
%rdg
±
5
dgt (
50
/
60
Hz)
 ±
2
.
5
%rdg
±
10
dgt (
40
Hz
1
kHz)
300〜400A
 ±
2
.
0
%rdg (
50
/
60
Hz)
 ±
5
.
0
%rdg (
40
Hz
1
kHz)
400
mA
0
.
1
mA
0
400
.
0
mA
400
A
0
.
1
A
0
400
.
0
A
CF(Crestfactor)
3
(
45
65
Hz,lessthan
600
APeak)
    ※
100
400
A
sinewave
2
%rdg
Countsequaltoorlessthan
3
countsarecorrectedtozero
Accuracy-insuredFrequencyrangeof
50
/
60
Hzmodeis
50
/
60
Hz.
The max indication at the
40
mA/
400
mA range is
6000
counts.
Minutecurrentmayexistwhilezeroisdisplayedat
400
A/
400
mA
range.Measurementshouldbemadealsoatalowerrange.
Conversion method:
Rmsvaluedetection
Operating System:
Sequentialcomparison
Display:
 LCDwithmax.readingof
4200
(
400
Arange),
6000
(
40
/
400
mArange)
Low battery warning:
"BATT"markappearsonthedisplay
Overrange Indication:
"OL"appearson thedisplay whenupperlimit
ofmeasuringrangeisexceeded
Response Time:
Approx.
2
seconds
Sample Rate:
Approx.
2
.
5
timespersecond
Accuracy-insured
23
℃±
5
,relativehumidity
85
%orless
Temperature and
(withoutcondensation)
Humidity Ranges:
Operating Temperature
0
-
40
,relativehumidity
85
%orless
and Humidity Ranges:
(withoutcondensation)
Storage Temperature
-
20
-
60
,relativehumidity
85
%orless
and Humidity Ranges:
(withoutcondensation)
Operable altitude:
2000
morlessabovesealevel(indooruse)
Power Source:
Two
1
.
5
VR
03
(AAA)batteries
Current Consumption:
Approx.
21
mA
Measurement Time:
Approx.
24
hours
Auto-power-off Function:
Turns power off about
10
minutes after the
lastswitchoperation
Safety Standard:
IEC
61010
-
1
IEC
61010
-
2
-
032
MeasurementCAT
300
V,pollutiondegree
2
EMC directive:
 EN
61326
-
01
,EN
61326
-
2
-
2
Environmetal standard:
EURoHSdirectivecompliant
Overload Protection:
480
AACmax.for
10
seconds
Withstand Voltage:
4240
VACrms (
50
/
60
Hz) for
5
sec. between
metal part of transformer jaws and housing
case(excepttransformerjawcase)
Insulation Resistance:
50
M
Ω
or greater at
1000
V between metal
part of transformer jaws and housing case
(excepttransformerjawcase)
Conductor Size:
Approx.
40
mmindiametermax.
Dimensions:

185
(L)
×
81
(W)
×
32
(D)mm
Weight:
Approx.
270
gincludingbatteries
Accessories:
TwoR
03
(AAA)batteries
CarryingcaseModel
9052
Instructionmanual
Reference
*Effective Value (RMS)
Most alternating currents and
vol tages are expre ssed in
effective values, which are
alsoreferredtoasRMS(Root-
Mean-Square)values.
The eff ective value i s the
square root of the average of
squareofalternatingcurrentor
voltagevalues.Manyclampmetersusingaconventionalrectifying circuit
have"RMS"scalesforACmeasurement.Thescalesare,however,actually
calibratedintermsoftheeffectivevalue ofasinewavethoughtheclamp
meteris respondingto theaverage value.The calibrationis done witha
conversion factor of
1
.
111
for sine wave, which is found by dividing the
effective value by the average value. These instruments are therefore in
erroriftheinputvoltageorcurrenthassomeothershapethansinewave.
*CF (Crest Factor) is found by dividing the peak value by the effective
value.
Examples:
  
Sinewave:CF=
1
.
414
Squarewavewitha
1
:
9
dutyratio:CF=
3
4. INSTRUMENT LAYOUT
●LCD
Low Battery Warning
Frequency Response :
Wide
Frequency Response :
50/60Hz
Data Hold Indication
Peak Hold Indication
Unit
Di s pl ay
Frequency Selector Button
Peak Hold Button
Data Hold Button
Tr a ns fo rm J aw s
Ba r ri er
Tr i gg er
Ra n ge S el ec to r Sw it ch
Ha n d St ra p
Barrier:It is a part providing protection against electrical shock and
ensuringtheminimumrequiredairandcreepagedistances.
5. PREPARATIONS FOR MEASUREMENT
5
-
1
CheckingBatteryVoltage
Setthe RangeSelector Switchto anyposition otherthan theOFF
position.Ifthemarksonthedisplayisclearlyvisiblewithout"BATT"
markshowing,batteryvoltageisOK.Ifthedisplayblanksor"BATT"
is indicated, replace the batteries according to section
8
: Battery
Replacement.
NOTE
When the instrument isleft poweredon,the auto-power-off
functionautomatically shut the power off; Thedisplay blanks
even ifthe Range Selector Switchis set toa position other than
the OFF position in this state. To poweron the instrument, turn
the Range Selector Switch or press the Data Hold Button. If the
display still blanks, the batteries are completelyexhausted.
Replacethebatteries.
5
-
2
CheckingSwitchSetting
MakesurethattheRange SelectorSwitchis settothe appropriate
range.
Also make sure that data hold function is not enabled. If
inappropriate range is selected, desired measurement cannot be
made.
6. OPERATING INSTRUCTIONS
6
-
1
CurrentMeasurement
#
DANGER
Inordertoavoidpossibleshockhazard,nevermakemeasurement
oncircuitshavingapotentialof
300
VACorgreater.
The transformer jaws aremade of metal and theirtips are not
completely insulated.Beespecially careful aboutthe possible
shortingwheretheequipmentundertesthasexposedmetalparts.
Never make measurement withthe batterycompartment cover
removed.
Whenmeasuringcurrentis
300
Aormore(
400
Hzormore),besure
tostopmeasurementwithin
5
minutes.Otherwise,transformer jaws
mayheattocauseafireordeformationofmoldedparts,whichwill
degradeinsulation.
Keepyourfingersandhandsbehindthebarrierduringmeasurement.
#
CAUTION
Take sufficient care to not to apply shock, vibration or
excessiveforcetothejawtips. Otherwise,preciselyadjusted
TransformerJawtipswillbedamaged.
When a foreign substance is stuck in the jaw tips or they
cannot properly engage, the transformer jaws do not fully
close.Insuchacase, donot releasethejawtriggerabruptly
orattemptto closethe transformerjaws byapplying external
force. Make sure that the jaws close by themselves after
removingtheforeignsubstanceormakingthemfreetomove.
The maximum size of a conductor to be tested is
40
mm
indiameter.Accuratemeasurementcannotbemadeona
conductor larger than this, because the transformer jaws
cannotfullyclose.
Whenmeasuringlargecurrent, thetransformerjaws maybuzz.
Thishasnoeffectontheinstrument'sperformanceorsafety.
Sensitivetransformerjaws areusedforLeakageclampmeter.
Because of the characteristics of transformer jaws,which
can be opened and closed, it is impossible to eliminate the
interference of external magnetic field completely. If there
are something,which generatinglarge magnetic field,at a
nearby site, current value can be displayed (
0
cannot
be displayed.) before clamping on the conductor. For such
a case, please use the instrument at a location far from the
thing,whichgeneratingmagneticfield.
Followingarethetypicalthingsgeneratingmagneticfield.
  ・
Conductorfedlargecurrent
  ・
Motor
  ・
Equipmentwhichhasmagnet
  ・
Integratingwattmeter
(
1
)SettheRangeSelectorSwitchtothedesiredposition.Currentto
measureshouldbewithintheselectedmeasuringrange.
(
2
)Normalmeasurement(SeeFig.
1
,
2
):
Pressthejawtriggertoopenthetransformerjawsandclosethem
overoneconductoronly.Measuredcurrentvalueisshownonthe
display.Earthleakagecurrentorsmallcurrentthatflowsthrough
agroundedwirecanalsobemeasuredbythismethod.
(
3
)Measuringoutofbalanceleakagecurrent(SeeFig.
3
):
Clamp onto all conductors except a grounded wire. Measured
currentvalueisshownonthedisplay.
Fig.
1
Loadcurrent
       
Fig.
Earthleakagecurrent
Load
Load
Fig.
3
Measuringoutofbalanceleakagecurrent
Load
Load
3
-phase
3
-wiresystem
(In
4
-wiresystem with neutral,
clampontoall
4
wires)
Single-phase
3
-wiresystem
(in
3
-wiresystem with neutral,
clampontoall
3
wires)
6
-
2
HowtoUseFrequencySelectorButton
Whenhighfrequenciesfromsuchequipmentasinvertersarepresent
inthecircuitundertest,theinstrument measuresAC current ofnot
only
50
Hzor
60
Hzoffundamentalfrequencybutalsoofthese high
frequenciesandharmonics.
To eliminate the effect of such high frequency noise and measure
AC current of
50
Hz or
60
Hz fundamental frequency, a "high-cut"
filtercircuit in incorporated into the instrument which works when
"
50
/
60
Hz" frequency response is selected with the Frequency
SelectorButton. Cut-off frequency of the "high-cut" filter isabout
160
Hzwithattenuationcharacteristicofapprox.-
24
dB/octave.
WhentheFrequencySelectorButtonis pressed,"
50
/
60
Hz"markis
shownontheleftsideofthedisplay.WhentheFrequencySelector
Button is pressed again, fequency response is switchedto WIDE
with"WIDE"markshownonthedisplay.
OutputcharacteristicareshowninFig.
4
.
Fig.
4
KEWSNAP
2433
RFrequencyCharacteristic
-30
-20
-10
0
10
Attenuation dB
k k50 500 10k 50k20k22001002010 100k
100%
50%
20%
10%
5%
Percentage
Typical characteristic "WIDE" frequency response
     fc=8kHz -24dB/cot
Typical characteristic "50/60Hz"
frequency response
     fc=160Hz -24dB/cot
Frequency Hz
Note:
Characteristic of -
24
dB/octiave means that signal magnitude
declinestoaboutonesixteenthofthatattheinitialfrequencywhen
frequency doubles. KEW SNAP
2433
R have the following two
settingsfortheFrequencySelectorButton.
WIDE(
20
Hz-approx.
kHz):
Permits measurement of currents of
fundamental frequencies as well as
currentsofhighfrequenciesgenerated
bysuchequipmentasinverters
50
/
60
Hz(
20
-approx.
160
Hz):Filters out high frequency currents
and measures current of fundamental
frequencyonly
Recently there has been increased use of power through inverters,
switching regulators, etc. When the high frequency noise from such
appliances leaks or flowsinto the ground through capacitors not
filtering completely, the earth leakage breaker may trip even though
thereisno"actual"leakage.Insuchacase,theinstrumentdonotgive
leakagecurrentreadingif"
50
/
60
Hz"frequencyresponseisselected.
Take current readings with the
50
/
60
Hz and WIDE frequency
responses respectively to make effective use of the Frequency
SelectorButton.
6
-
3
PeakCurrentMeasurement
(
1
)SettheRangeSelectorSwitchtothedesiredposition.(Currentto
measureshouldnotexceedtheselectedmeasuringrange.)
(
2
)Select"WIDE"or"
50
/
60
Hz"withtheFrequencySelectorButton.
(
3
)With the transformer jaws clamped onto the conductor under
test,pressthePeakHoldButtonto settheintermenttothepeak
measurementmode.("P"isshownonthedisplay.)
(
4
)The display reads
1
/
2
of thepeak current value. Therefore,an
rms reading is shown when current of a sinusoidal waveform is
measured.
(
5
)Afterpeakmeasurement, pressthe PeakHoldButtontoreturnto
thenormalmeasurementmode.
Note:When leakage current is measured in the peak measurement
mode, the reading may change if the transformer jaws are
openedandclosed.Please readthedisplaywith theconductor
undertest clamped, otherwise, after fixing the display byusing
the data hold function, please remove the instrument from the
conductor to be measured, and read the display. To measure
thepeakcurrentagain,pleasereleasethe datahold, and return
theinstrument to thenormal measurement modeonce with the
PeakHoldButton,thensetitinthepeakmeasurementmode.
Countsequaltoorlessthan
5
countsarecorrectedtozero.
7. OTHER FUNCTIONS
7
-
1
Auto-Power-OffFunction
Thisisafunctionto preventthe instrumentfrom beingleftpowered
onand conserve battery power. The instrument automatically turns
off about
10
minutesafter the last switch or button operation.To
returntothenormalmode,turn theRangeSelectorSwitchtoOFF,
thentothedesiredposition.
DisablingAuto-Power-OffFunction:
Todisabletheauto-power-offfunction,powerontheinstrumentwith
theData Hold Button pressed. About
3
seconds after powering on
theinstrument,"P.OFF"isshownonthedisplay.Toenabletheauto-
power-offfunction,turnontheinstrumentwithout pressingthe Data
HoldButton.
Note: The auto-power-off function is disabled in the peak
measurementmode.
7
-
2
DateHoldFunction
Thisisafunctiontofreezethereadingsonthedisplay.Whenthe
DataHoldButtonispressedonce,thecurrentreadingis held even
thoughcurrent under test varies. "H" mark is shown on the upper
rightcornerofthedisplay.
Toexitthedataholdmode,presstheDataHoldButtonagain.
Note:Whentheauto-power-offfunctionworkswhiletheinstrumentis
inthedataholdmode,dataholdiscancelled.
92
-
1557
H
5
-
22
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs
describedinthismanualwithoutnoticeandwithoutobligations.
8. BATTERY REPLACEMENT
# WARNING
Inorder toavoid possibleshock hazard,always setthe Range
SelectorSwitchtotheOFFpositionbeforetryingtoreplacethe
batteries.
# CAUTION
Donotmixnewandoldbatteries.
Installbatteriesintheorientationasshowninsidethebattery
compartment,observingcorrectpolarity.
Whenthe battery voltage warningmark "BATT" is shownon the
top left corner of the LCD, replace the batteries. Note that the
displayblanksand"BATT"markisnotshownifthe batteries are
completelyexhausted.
(
1
)SettheRangeSelectorSwitchto"OFF."
(
2
)Loosenthebattery-compartment-cover-fixingscrewonthelower
backoftheinstrument.
(
3
)Replace the batteries with two new R
03
(AAA)
1
.
5
V
batteries.
(
4
)Putthebatterycompartmentcoverbackinplaceandtighten
thescrew.
Note:Foruseforalongperiodoftime,usealkalinebatteries(LR
03
).
Screw
Battery
Compartment
Cover
Batteries
DisposetheBatteries
Thismarkingmeanstheyshallbesortedoutandcollectedas
ordainedinDIRECTIVE
2006
/
66
/EC.
This directive is valid only in the EU. When you remove
batteries from this product and dispose them, discard them in
accordance with domestic law concerning disposal. Take a right
actiononwastebatteries,becausethecollectionsystem in the EU
onwastebatteriesareregulated.
WasteElectricalandElectronicEquipment(WEEEE)
Thismarkingmeanstheyshallbesortedoutandcollectedas
ordainedinDIRECTIVE
2006
/
66
/EC.
This directive is valid only in the EU. When you remove
batteries from this product and dispose them,discard them
inaccordancewithdomestic lawconcerningdisposal.Take aright
actiononwastebatteries,becausethecollectionsystem in the EU
onwastebatteriesareregulated.


Product specificaties

Merk: Kyoritsu
Categorie: Multimeter
Model: KEW 2433R

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