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Kyoritsu Multimeter 2434

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INSTRUCTIONMANUAL
KEW SNAP
　
2434
KEW SNAP Series
LEAKAGECURRENTTESTER
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.,
TOKYO, JAPAN
1. SAFETY WARNINGS
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 safeoperation of the
instrumentandtoretainitinsafecondition.Therefore,readthroughthese
operatinginstructionsbeforestartingusingtheinstrument.
#
WARNING
●
Readthrough and understand instructions contained in this manual
beforestartingusingtheinstrument.
●
Saveandkeepthemanualathandtoenablequickreferencewhenever
necessary.
●
Besuretouse the instrumentonly in itsintended applicationsandto
followmeasurementproceduresdescribedinthemanual.
●
Be sure to understand and follow all safety instructions contained in
themanual.
Notfollowingtheaboveinstructionsmaycauseinjury,instrumentdamage
and/ordamagetoequipmentundertest.
Theinstrumentistobeusedonlyinitsintendedapplications.
Understandandfollowallthesafetyinstructionscontainedinthemanual.
Failuretofollowtheinstructionsmaycauseinjury,instrumentdamageand/
or damage toequipmentunder test. Kyoritsuisby nomeans liableforany
damageresultingfromtheinstrumentincontradictiontothiscautionarynote.
Thesymbol
#
indicatedontheinstrumentmeansthat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 reservedforconditions andactions thatare likely to
causeseriousorfatalinjury.
#
WARNING
is reservedforconditions and actionsthatcancause
seriousorfatalInjury.
#
CAUTION
isreservedforconditionsandactionsthatcancause
minorinjuryorInstrumentdamage.
Following symbols are used on the instrument and in the instruction
manual.Attentionshouldbepaidtoeachsymboltoensureyoursafety.
#
Refertotheinstructionsinthemanual.
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).
IndicatesEarth.
#
DANGER
●
Never makemeasurementonacircuithavingpotential of 300VAC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especiallycarefulabout thepossible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 tryto make measurement if any abnormal conditions,such as
brokenTransformerjawsorcaseisnoted.
●
Theinstrumentistobeusedonlyinitsintendedapplicationsorconditions.
Otherwise,safetyfunctionsequippedwiththeinstrumentdoesn'twork,and
instrumentdamageorseriouspersonalinjurymaybecaused.
●
Keepyourfingersandhandsbehindthebarrierduringa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.
#
CAUTION
●
Makesure that the range selector switch is set to an appropriate
positionbeforemakingmeasurement.
●
Donotexposethe instrumentto thedirect sun,extremetemperatures
ordewfall.
●
Be sure toset the range selector switch to the "OFF" position after
use.Whentheinstrumentwillnotbe in useforalong periodoftime,
placeitinstorageafterremovingthebatteries.
●
Usea dampcloth and detergent forcleaning the instrument. Donot
useabrasivesorsolvents.
●
Always switch off the instrument before opening the battery
compartmentcoverforbatteryreplacement.
Measurementcategories(Over-voltagecategories)
Toensuresafeoperationofmeasuringinstruments,IEC61010establishessafety
standards for various electricalenvironments, categorized as O toCAT IV, and
calledmeasurementcategories.
Higher-numbered categories correspond to electrical environmentswith 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: Primary 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 overcurrent protection device (distribution
panel).
2. FEATURES
●
DigitalclamptesterforACleakagecurrentmeasurement.
●
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 CAT.
Ⅲ
,
300Vandpollutiondegree2.
●
Data hold function toallow for easy readings in dimly lit or hard-to-
reachlocations.
●
Providesfilteringfunctiontoremovehighfrequencygeneratedbysuch
equipmentasinverters.
●
Sleepfunctionpreventsunnecessarypowerconsumption.
●
Dynamicrangeof4000countsfullscale.
●
Largeeasy-to-readLCDdisplaywithletterheightof13mm.
●
Transformerjawsfittedwithguardtofurtherimprovesafety.
O: Device which is
not directly
connected to the
mains power supply
3. SPECIFICATIONS
Measuringrangesandaccuracy
Range MeasuringRange Accuracy(Frequencyrange)
400mA 0
〜
399.9mA
 ±
2.0%rdg
±
4dgt
（
50/60Hz
）
 ±
3.0%rdg
±
5dgt
（
40
〜
400Hz
）
4A 0
〜
3.999A
100A 0
〜
100.0A
Whenmeasuring current which pulse element is superposed,differences of the
indicatedvaluemaybecausedbetweenranges,ifthe peakvalue exceedsthe
measurement range to a large extent.In this case, the reading at the bigger
rangeshouldbetakenasarightvalue.
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 generating large 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alocation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
Measuring method:
 DualIntegration
Display:
 Liquid crystal display with maximum reading of
3999
Low battery warning:
 "BATT"markappearsonthedisplay
Overrange Indication:
 "OL"appearsonthedisplaywhenupperlimitof
measuringrangeisexceeded
Response Time:
 Approx.2seconds
Sample Rate:
 Approx.2.5timespersecond
Location for use
Indooruse,Altitudeupto2000m
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)
Power Source:
 Two1.5VR03(UM-4)batteries
Current Consumption:
 Approx.4mA
Measurement Time:
 Approx.150hours
Sleep Function:
Automatically powered down in about 10
minutesafterthelastswitchoperation
Safety Standard:
 IEC61010-1,IEC61010-2-032
measurement CAT.
Ⅲ
300V, pollution degree 2
IEC61326(EMC),EN50581(RoHS)
Overload Protection:
 120Armsmax.for10seconds
Withstand Voltage:
3470Vrms (50/60Hz) for 5 seconds between
metalpartoftransformerjaws andhousing case
(excepttransformerjawcase)
Insulation Resistance:
 10M
Ω
or greaterat1000Vbetween metal part
of transformer jaws and housing case (except
transformerjawcase)
Conductor Size:
 Approx.28mmindiametermax.
Dimensions:
 169(L)
×
75(W)
×
40(D)mm
Weight:
  Approx.220gincludingbatteries
Accessories:
 TwoR03(UM-4)batteries
  CarryingcaseModel9097
  Instructionmanual
Optional Accessories:
 Multi-TranModel8008
4. INSTRUMENT LAYOUT
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, batteryvoltageis OK.If thedisplayblanks or "BATT"is
indicated, replace the batteries according to section 8: Battery
Replacement.
NOTE
When the instrument is left powered on, the Sleep function
automaticallyshutthepower off;The display blankseven ifthe
RangeSelector 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anybutton.Ifthedisplaystillblanks,the
batteriesarecompletelyexhausted.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 dataholdfunctionisnotenabled. Ifinappropriate
rangeisselected,desiredmeasurementcannotbemade.
Tr an s fo rm J aw s
Tr ig ge r
Ra ng e S el ec to r Swi t ch
Ha nd Str a p
Di sp l ay
Frequency Selector Button
Data Hold Button
●ＬＣＤ
Low Battery Warning
Frequency Response :
Wide
Frequency Response :
50/60Hz
Data Hold Indication
Unit
Ba rri e r
Barrier is a part providing protection against electrical shock and
ensuring the minimum required air and creepage distances.
3-phase 3-wire system
(In 4-wire system with neutral,
clamp onto all 4 wires)
Single-phase 2-wire system
(in 3-wire system with neutral,
clamp onto all 3 wires)
Load
Load
6. OPERATING INSTRUCTIONS
#
DANGER
●
In order to avoid possible shock hazard, never make measurement
oncircuitshavingapotentialof300VACorgreater.
●
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 make measurement with the battery compartment cover
removed.
●
Keepyourfingersandhandsbehindthebarrierduringmeasurement.
#
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
properlyengage,thetransformerjawsdonotfullyclose.Insucha
case,donotreleasethejawtriggerabruptlyorattempttoclosethe
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28mm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maybuzz.This
hasnoeffectontheinstrument'sperformanceorsafety.
6-1 Leakage Current Measurement

(1)Set the Range Selector Switch to the desired position.  Current to
measureshouldbewithintheselectedmeasuringrange.
(2)Measuringoutofbalanceleakagecurrent(SeeFig.1):
 
Clampontoallconductorsexceptagroundedwire.Measuredcurrent
valueisshownonthedisplay.
(3)Measuringearthleakagecurrent(SeeFig.2):
Clamponto agroundedwire.Measured currentvalue isshown on the
display.
Fig.1Measuringoutofbalanceleakagecurrent
Fig.2Measuringearthleakagecurrent
6-2 How to Use Frequency Selector Button
Whenhigh frequencies from suchequipment as inverters are present in
the circuit under test, the instrument measures AC current of not only
50Hz or 60Hz of fundamental frequency but also of these high
frequenciesandharmonics.
To eliminate the effect of such high frequency noise and measure AC
currentof50Hzor60Hzfundamentalfrequency,a"high-cut"filtercircuit
in incorporated into the instrument which works when "50/60Hz"
frequencyresponseisselectedwiththeFrequencySelectorButton.Cut-
off frequency of the "high-cut" filter is about 160Hz with attenuation
characteristicofapprox.-24dB/octave.
When the Frequency Selector Button is pressed, "50/60Hz" mark is
shown on the left side of the display.  When the Frequency Selector
Button is pressed again, frequency response is switched to WIDE with
"WIDE"markshownonthedisplay.
OutputcharacteristicareshowninFig.3.
Fig.3KEWSNAP2434FrequencyCharacteristic
Note:
Characteristicof-24dB/octiavemeansthatsignalmagnitudedeclinesto
about one sixteenth of that at the initial frequency when frequency
doubles. KEW SNAP 2434 have the following two settings for the
FrequencySelectorButton.
WIDE(40Hz-):Permits measurement of currents of fundamental
frequencies as well as currents of high frequencies
generatedbysuchequipmentasinverters
50/60Hz(40-approx.160Hz):Filters out high frequency currents and
measurescurrentoffundamentalfrequency
only
100％
50％
20％
10％
5％
5ｋ1ｋ 2ｋ500100 200502010
ー30
ー20
ー10
　0
Attenuation〔dB〕
　10
Frequency〔Hz〕
Percentage
Typical characteristic：
400mA/４A Range
Typical characteristic：
“WIDE”frequency response
Typical characteristic：
“50/60Hz”frequency response
high-cut filter -24dB/oct
Typical characteristic：
100A Range
Load
Grounded wire
Recently there has been increased use of power through inverters,
switching regulators, etc. When the high frequency noise from such
appliancesleaksorflowsinto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"50/60Hz"frequencyresponseisselected.
Takecurrentreadingswiththe50/60HzandWIDEfrequencyresponses
respectivelytomakeeffectiveuseoftheFrequencySelectorButton.
6-3LoadCurrentMeasurement
(1)
Set the Range Selector Switch to the desired position.
Current
to
measureshouldbewithintheselectedmeasuringrange.
(2)
Measuringloadcurrent(SeeFig.4):
 

Press the jaw trigger to open the transformer jaws and close
them
over one conductor only.Measured current value is shown
on the
display.
Fig.4Measuringloadcurrent
7. OTHER FUNCTIONS
7-1 Sleep Function
Thisisafunctiontopreventtheinstrumentfrombeingleftpowered
on
inordertoconservebatterylife.
The instrument automatically enters the Sleep (powered-down) Mode
about10minutesafterthelastswitchoperation.
To exit the Sle ep Mode, p ress th e Dat a Hold o r Freque ncy S elec tor
Button or turn th e Range Sel ector Switc h to O FF, then to any other
position.
HowtoExittheSleepMode:
TurntheRangeSelectorSwitchfrom
OFF
toanotherpositionwith
the Data Hold Butto n p ressed. Th en,
P.OFF
 is show n on the
display.ThisdisablestheSleepfunctionandenablescontinuoususeof
theinstrument.
To ena blet heS leep fu nctio n,t urn the Range Selector Switch ba ckto
OFF
,thentoanyotherposition.
Note:
Thein strum ent con sumess mallamou ntof cu rrent int heSleep M ode.
Whentheinstrumentisnotinuse,makesuretosettheRangeSelector
Switchto
OFF
.
7-2 Date Hold Function
Thisisafunctiontofreezethereadingsonthedisplay.WhentheData
Hol dBut ton is pre ssed onc e, th e current rea ding is held even thoug h
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Sleepfunctionworkswhiletheinstrumentisinthedata
holdmode,dataholdiscancelled.
8. BATTERY REPLACEMENT
#
CAUTION
●
Donotmixnewandoldbatteries.
●
Install batteries in the orientation as shown inside the battery
compartment,observingcorrectpolarity.
●
In order to avoidpossible shock hazard, always set the Range
SelectorSwitchtotheOFFpositionbeforetryingtoreplacethe
batteries
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)Loosenthebattery-compartment-cover-fixingscrewonthelowerback
oftheinstrument.
 
(3)ReplacethebatterieswithtwonewR03(UM-4)1.5Vbatteries.
 
(4)Put the battery compartment
cover back in place and tighten
thescrew.
Note:Use alkaline batteries to perform
measuringforlong
9. OPTIONAL ACCESSORIES
Model8008(Multi-Tran)
These models help KEW SNAP 2434 to measure current greater than
1000Aortomakemeasurementonalargebus-barorconductor.
 
(1)SettheRangeSelectorSwitchto"100A".
 
(2)As shown, open the jaws and close them over the pickup coil of
Model8008.
 
(3)ClamponaconductorwithModel8008.
 
(4)Takethereadingandmultiplyitby10.
Note:Model 8008 cannot be usedfor leakage current measurement. For
detailed specifications, refer to the instruction manual for Model
8008.
Max.ConductorSize
MeasuringRange
CurrentTransformation
Ratio
M-8008
100mmindiameter
0
〜
1000A 10:1
KEW2434
M- 8 0 0 8
Pick u p Coil
Conductor
Transformer
jaws
10
Screw Battery
Compartment
Cover
Batteries
92-1509B2-17
DISTRIBUTOR
Kyoritsu reserves the rightsto changespecifications ordesigns
describedinthismanualwithoutnoticeandwithoutobligations.
Load

Produktspecifikationer

Varumärke: Kyoritsu
Kategori: Multimeter
Modell: 2434

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