Instrukcja obsługi Kyoritsu 2434

Kyoritsu multimetr 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 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 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sureto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followingthe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tofollowtheinstructionsmaycauseinjury,instrumentdamageand/

or damage toequipmentunder test. Kyoritsuisby nomeans liableforany

damageresultingfrom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.

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 makemeasurementona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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 tryto make measurement if any abnormal conditions,such as

brokenTransformerjawsorcaseisnoted.

●



Theinstrumentisto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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

●

Makesure that the range selector switch is set to an appropriate

positionbeforemakingmeasurement.

●

Donotexposethe instrumentto thedirect sun,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.

●

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 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: 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removehighfrequencygeneratedbysuch

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

（

〜

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 (





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

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thedisplaywhenupper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

℃±

℃

,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

metalpartoftransformerjaws andhousing case

(excepttransformerjawcase)

Insulation Resistance:

 10M

or greaterat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, 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 is left powered on, the Sleep function

automatically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anybutton.Ifthedisplaystillblanks,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 dataholdfunctionisnotenabled. 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

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

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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maybuzz.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conductorsexceptagroundedwire.Measuredcurrent

valueisshownonthedisplay.

(3)Measuringearthleakagecurrent(SeeFig.2):

Clamponto agroundedwire.Measured currentvalue 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

Whenhigh frequencies from suchequipment 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of50Hzor60Hzfundamentalfrequency,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/octiavemeans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

Attenuation〔dB〕

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RangeSelectorSwitchfrom



OFF



toanotherpositionwith

the Data Hold Butto n p ressed. Th en,



P.OFF



 is show n on the

display.ThisdisablestheSleepfunctionandenablescontinuous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:

Thein strum ent con sumess mallamou ntof cu rrent int heSleep M ode.

Whentheinstrumentisnotinuse,makesuretosetthe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workswhile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tothe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-fixingscrew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 usedfor 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

〜

1000A 10:1

KEW2434

M- 8 0 0 8

Pick u p Coil

Conductor

Transformer

jaws

Screw Battery

Compartment

Cover

Batteries

92-1509B2-17

DISTRIBUTOR

Kyoritsu reserves the rightsto changespecifications ordesigns

describedinthismanualwithoutnoticeandwithoutobligations.

Load

Specyfikacje produktu

Marka:	Kyoritsu
Kategoria:	multimetr
Model:	2434

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