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Kyoritsu Mätutrustning 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themanual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damageresulting
from the instrument in contradiction to this cautionary
note.
The symbol
#
indicated on the instrument, means that
theusermustrefertotherelated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reservedforconditionsandactions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andactionsthat
cancauseminorinjuryorinstrumentdamage.
# DANGER
●
Never make measurement on a circuit in which the
electricalpotentialexceedsAC
300
V.
●
Donot makemeasurementwhenthunderrumbling. Ifthe
instrument is in use, stop the measurement immediately
andremovetheinstrumentfromthemeasuredobject.
●
Donotattempttomakemeasurementinthepresenceof
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makeanymodification
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,suchas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 :Circuitswhicharenotdirectlyconnectedtothe
mainspowersupply.
CATII :Electricalcircuitsof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
：
30
A
   
KEW
8147
：
70
A
   
KEW
8148
：
100
A
●
DesignedtointernationalsafetystandardIEC
61010
-
2
-
032
   
CAT
Ⅲ
PollutionDegree
2
　3. Instrument layout
TransformJaws Trigger Cable
Outputconnector
Barrier
Barrier
：
It is a part providing protectionagainst electrical
shock and ensuring the minimum required air and
creepagedistances.
　4. DIN Plug pin assignment
3
:GNDpin
5
:Outputsignalpin
6
:SensorSignalpin
（
Resistancebetween
3
Pinand
6
Pin:

8146
:
47
k
Ω 
8147
:
8
.
2
k
Ω 
8148
:
30
k
Ω）
1
,
2
and
4
: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
3
12
4
6
　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jawsaremadeofmetalandtheirtips
are not completely insulated. Be especially careful
aboutthepossibleshortingwherethemeasuredobject
hasexposedmetalparts.
●
Keepyourfingersandhandsbehind thebarrierduringa
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jawsdonotfullyclose,nevertryto
closethembyforce,butmakethemfree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indicatedvaluemay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
5
-
1
Measuringmethod
(
1
)
ConnecttheOutputconnectortotheInputterminalof
themeasuringinstrument.
(
2
)Press the Trigger to open the transformer jaws and
clampontooneconductor.
Inthiscase,themeasuredconductorshallbeatthe
centerofthejaws.
(
3
)
Ensurethatthetipsoftransformerjawsarefirmlyclosed.
5
-
2
Measuringmethod
(
1
)Measuring out of balance leakage current (See
Fig.
1
):Clamp onto all conductors except a grounded
wire.
(
2
)Measuring earth leakage current (See Fig.
2
):Clamp
ontoagroundedwire.
3
-phase
3
-wiresystem
(In
4
-wiresystemwithneutral,
clampontoall
4
wires)
Fig.
1
Measuringoutofbalanceleakagecurrent
Groundedwire
Load
Load
Load
Single-phase
2
-wiresystem
(In
3
-wiresystemwithneutral,
clampontoall
3
wires)
Fig.
2
Measuringearthleakagecurrent
92
-
1746
E
7
-
22
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
30
Arms(
42
.
4
Apeak) AC
70
Arms(
99
.
0
Apeak) AC
100
Arms(
141
.
4
Apeak)
Outputvoltage AC
0
〜
1500
mV
(
50
mV/A)
AC
0
〜
3500
mV
(
50
mV/A)
AC
0
〜
5000
mV
(
50
mV/A)
Measuringrange AC
0
〜
30
A AC
0
〜
70
A AC
0
〜
100
A
Accuracy
(Input:sinewave)
0
A
〜
15
A

±
1
.
0
%rdg
±
0
.
1
mV(
50
/
60
Hz)

±
2
.
0
%rdg
±
0
.
2
mV(
40
〜
1
kHz)
15
A
〜
30
A

±
5
.
0
%rdg(
50
/
60
Hz)

±
10
.
0
%rdg(
45
〜
1
kHz)
0
A
〜
40
A

±
1
.
0
%rdg
±
0
.
1
mV(
50
/
60
Hz)

±
2
.
0
%rdg
±
0
.
2
mV(
40
〜
1
kHz)
40
A
〜
70
A

±
5
.
0
%rdg(
50
/
60
Hz)

±
10
.
0
%rdg(
45
〜
1
kHz)
0
A
〜
80
A

±
1
.
0
%rdg
±
0
.
1
mV(
50
/
60
Hz)

±
2
.
0
%rdg
±
0
.
2
mV(
40
〜
1
kHz)
80
A
〜
100
A

±
5
.
0
%rdg(
50
/
60
Hz)

±
10
.
0
%rdg(
45
〜
1
kHz)
Temperature&humidityrange
(Guaranteedaccuracy)

23
±
5
℃
,relativehumidity:
85
%orless(nocondensation)
Operatingtemperaturerange

0
〜
50
℃
,relativehumidity:
85
%orless(nocondensation)
Storagetemperaturerange
-
20
〜
60
℃
,relativehumidity:
85
%orless(nocondensation)
Maximumpermissibleinput
AC
30
Armscontinuous(
50
/
60
Hz) AC
70
Armscontinuous(
50
/
60
Hz) AC
100
Armscontinuous(
50
/
60
Hz)
Output
impedance Approx.
90
Ω
Approx.
100
Ω
Approx.
60
Ω
Locationforuse Altitudeupto
2000
m,Indoors
Applicable
standards
IEC
61010
-
1
,IEC
61010
-
2
-
032
  
MeasurementCAT
Ⅲ
(
300
Vrms)
  
Pollutiondegree
2
IEC
61326
-
1
(EMC)
Environmental
standards EURoHSdirectivecompliant
Withstand
voltage
AC
3470
Vrms(
50
/
60
Hz)for
5
sec.
  
betweenJawandenclosure
  
betweenenclosureandoutputterminal
  
betweenJawandoutputterminal
Insulation
resistance
50
M
Ω
orgreaterat
1000
V
  
betweenJawandenclosure
  
betweenenclosureandoutputterminal
  
betweenJawandoutputterminal
ConductorSize Approx.
24
mmindiameter(max.) Approx.
40
mmindiameter(max.) Approx.
68
mmindiameter(max.)
Dimension
100
(L)
×
60
(W)
×
26
(D)mm
128
(L)
×
81
(W)
×
36
(D)mm
186
(L)
×
129
(W)
×
53
(D)mm
Cablelength Approx.
2
m
Outputterminal MINIDIN
6
PIN
Weight Approx.
150
g Approx.
240
g Approx.
510
g
Accessories Instructionmanual
Cablemarker
Option MODEL
7146
（
Banana
Φ
4
adjusterplug
）
MODEL
7185
（
Extensioncable
）
　6. Specifications

Produktspecifikationer

Varumärke: Kyoritsu
Kategori: Mätutrustning
Modell: KEW 8148

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Mätutrustning Kyoritsu Manualer

Kyoritsu

Kyoritsu KEW3125B Bruksanvisning

22 September 2024
Kyoritsu

Kyoritsu KEW 8148 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 8146 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 4140 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 8121 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 8115 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 8035 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 5010 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu KEW 4300 Bruksanvisning

18 September 2024
Kyoritsu

Kyoritsu 4105A Bruksanvisning

18 September 2024

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