Kyoritsu KEW 8148 Handleiding

Kyoritsu Meetapparatuur KEW 8148

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INSTRUCTIONMANUAL

KEW 8146/8147/8148

LEAKAGE CLAMP SENSOR

Series

KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.,

TOKYO, JAPAN

KEW

8146

KEW

8147

KEW

8148

LEAKAGECLAMPSENSOR

1. Safety warnings

This instrument has been designed, manufactured and

tested according to IEC

61010

: Safety requirements for

Electronic Measuringapparatus, and deliveredin the best

condition after passing quality control tests. This

instruction manual contains warnings and safety rules

which have to be observed by the user to ensure safe

operation of the instrument and to maintain it in safe

condition. Therefore, read through these operating

instructionsbeforeusingtheinstrument.

# WARNING

●

Read through and understand instructionscontained in

thismanualbeforeusingtheinstrument.

●

Keep the manual at hand to enable quick reference

whenevernecessary.

●

The instrument is to be used only in its intended

applications.

Theoperatinginstructionsdescribedinthemanualmust

beobserved.

●

Understand and follow all the safety instructions

containedinthemanual.

Itisessentialthattheaboveinstructionsareadheredto.

Failuretofollowtheaboveinstructionsmaycauseinjury

andorinstrumentdamage.

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therelatedpartsinthemanualfor

safeoperationoftheinstrument.Itisessentialtoreadthe

instructions wherever the

 symbol appears in the

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.

# DANGER

●

Never make measurement on a circuit in which the

electricalpotentialexceedsAC

300

●

Donot makemeasurementwhenthunderrumbling. Ifthe

instrument is in use, stop the measurement immediately

andremovetheinstrumentfromthemeasuredobject.

●

Donotattempttomakemeasurementinthepresenceof

flammable gasses. Otherwise, the use ofthe instrument

maycausesparking,whichcanlead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measuredobject

hasexposedmetalparts.

●

Never attempt to use the instrument if it's surface or

yourhandarewet.

●

Do not exceed the maximum allowable input of any

measuringrange.

# WARNING

●

Never attempt to make any measurement, if any

abnormal conditions are noted, such as broken case,

andexposedmetalparts.

●

Donotinstallsubstitutepartsormakeanymodification

totheinstrument.

Return the instrument to the distributor from who you

purchased this instrument for repair or re-calibration in

caseofsuspectedfaultyoperation.

●

Always keep your fingers and hands behind the barrier

ontheinstrumenttoavoidthepossibleshockhazard.

# CAUTION

●

Donotsteponorpinchthecordtopreventthejacketof

cordfrombeingdamaged.

●



The output connector shall be removed or connected

without clamping a conductor. Otherwise, it may cause

afailure.

●

Do not expose the instrument to direct sunlight, high

temperatures,humidityordew.

●

Nevergiveshocks,suchasvibrationordrop,whichmay

damagetheinstrument.

●

Use a damp cloth and detergent for cleaning the

instrument.Donotuseabrasivesorsolvents.

Safetysymbols

Incoming wire

Ｏ:Device which is

not directly

connected to the

mains power supply

Socket

Interior wiring

○

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).

　2. Features

●

ClampsensorforACleakagecurrentmeasurement.

●

Canmeasureupto:

KEW

8146

：

KEW

8147

：

KEW

8148

：

100

●



DesignedtointernationalsafetystandardIEC

61010

032

CAT

Ⅲ

PollutionDegree

　3. Instrument layout

TransformJaws Trigger Cable

Outputconnector

Barrier

：

It is a part providing protectionagainst electrical

shock and ensuring the minimum required air and

creepagedistances.

　4. DIN Plug pin assignment

:GNDpin

:Outputsignalpin

:SensorSignalpin



（

Resistancebetween

Pinand

Pin:



8146

8147

8148

Ω）

,

and

:Nouse

*Lower figure shows the pin assignment seeing the Clamp

sensor from output connector part. The figure of the pin

assignment of connection terminal is symmetrical to lower

figure.

　5. Operating instructions

# DANGER

●

Never make measurement on a circuit in which the

electricalpotentialexceedsAC

300

Vinordertoavoid

possibleshockhazard.

●

Thetransformerjawsaremadeofmetalandtheirtips

are not completely insulated. Be especially careful

aboutthepossibleshortingwherethemeasuredobject

hasexposedmetalparts.

●

Keepyourfingersandhandsbehind thebarrierduringa

measurement.

# CAUTION

●



Take sufficient care to avoid shock, vibration or

excessive force when handling the instrument.

Otherwise, precisely adjusted transformer jaws willbe

damaged.

●

Whentransformerjawsdonotfullyclose,nevertryto

closethembyforce,butmakethemfreetomoveand

try again. If a foreign substance is stuck in the jaw

tips,removeit.

●

When making current measurements, keep the

transformerjawsfullyclosed.

Otherwise,accuratemeasurementscannotbetaken.

●

Hold the inserting part (except for the cable) and

disconnect the Output connector from the measuring

instrumentsoasnottocauseabreakinthecord.

●

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 is a presence of

strongmagneticfield,usetheinstrumentatadistance

as far as possible from it. Following are the typical

thingsgeneratingmagneticfield.

・

Conductorfedlargecurrent

・

Motor

・

Equipmentwhichhasmagnet

・

Integratingwattmeter

Measuringmethod

(

)

ConnecttheOutputconnectortotheInputterminalof

themeasuringinstrument.

(

)Press the Trigger to open the transformer jaws and

clampontooneconductor.

Inthiscase,themeasuredconductorshallbeatthe

centerofthejaws.

(

)

Ensurethatthetipsoftransformerjawsarefirmlyclosed.

Measuringmethod

(

)Measuring out of balance leakage current (See

Fig.

):Clamp onto all conductors except a grounded

wire.

(

)Measuring earth leakage current (See Fig.

):Clamp

ontoagroundedwire.

-phase

-wiresystem

(In

-wiresystemwithneutral,

clampontoall

wires)

Fig.

Measuringoutofbalanceleakagecurrent

Groundedwire

Load

Single-phase

-wiresystem

(In

-wiresystemwithneutral,

clampontoall

wires)

Fig.

Measuringearthleakagecurrent

1746

DISTRIBUTOR

Refertotheinstructionsinthemanual.



IndicatesaInstrumentwithdoubleorreinforcedinsulation

Indicates that this instrument can clamp on live bare

conductors when the voltage to be tested is below

Circuit -Ground-to-Earth voltage againsttheindicated

MeasurementCategory.

～

IndicatesAC

Model KEW

8146

KEW

8147

KEW

8148

Ratedvoltage AC

Arms(

Apeak) AC

Arms(

Apeak) AC

100

Arms(

141

Apeak)

Outputvoltage AC

〜

1500

(

mV/A)

〜

3500

(

mV/A)

〜

5000

(

mV/A)

Measuringrange AC

〜

A AC

〜

A AC

〜

100

Accuracy

(Input:sinewave)

〜



%rdg

mV(

Hz)



%rdg

mV(

〜

kHz)

〜



%rdg(

Hz)



%rdg(

〜

kHz)

〜



%rdg

mV(

Hz)



%rdg

mV(

〜

kHz)

〜



%rdg(

Hz)



%rdg(

〜

kHz)

〜



%rdg

mV(

Hz)



%rdg

mV(

〜

kHz)

〜

100



%rdg(

Hz)



%rdg(

〜

kHz)

Temperature&humidityrange

(Guaranteedaccuracy)



℃

,relativehumidity:

%orless(nocondensation)

Operatingtemperaturerange



〜

℃

,relativehumidity:

%orless(nocondensation)

Storagetemperaturerange

〜

℃

,relativehumidity:

%orless(nocondensation)

Maximumpermissibleinput

Armscontinuous(

Hz) AC

Armscontinuous(

Hz) AC

100

Armscontinuous(

Hz)

Output

impedance Approx.

Approx.

100

Approx.

Locationforuse Altitudeupto

2000

m,Indoors

Applicable

standards

IEC

61010

,IEC

61010

032

MeasurementCAT

Ⅲ

(

300

Vrms)

Pollutiondegree

IEC

61326

(EMC)

Environmental

standards EURoHSdirectivecompliant

Withstand

voltage

3470

Vrms(

Hz)for

sec.

betweenJawandenclosure

betweenenclosureandoutputterminal

betweenJawandoutputterminal

Insulation

resistance

orgreaterat

1000

betweenJawandenclosure

betweenenclosureandoutputterminal

betweenJawandoutputterminal

ConductorSize Approx.

mmindiameter(max.) Approx.

mmindiameter(max.)

Dimension

100

(L)

(W)

(D)mm

128

(L)

(W)

(D)mm

186

(L)

129

(W)

(D)mm

Cablelength Approx.

Outputterminal MINIDIN

Weight Approx.

150

g Approx.

240

g Approx.

510

Accessories Instructionmanual

Cablemarker

Option MODEL

7146

（

Banana

adjusterplug

）

MODEL

7185

（

Extensioncable

）

　6. Specifications

Product specificaties

Merk:	Kyoritsu
Categorie:	Meetapparatuur
Model:	KEW 8148

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