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Kyoritsu Mätutrustning KEW 8146

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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
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 forconditions 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
V.
●
Donotmakemeasurementwhenthunderrumbling.Ifthe
instrumentis in use, stop themeasurement immediately
andremovetheinstrumentfromthemeasuredobject.
●
Donotattempttomakemeasurementinthe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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
：
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
sensorfrom output connector part. Thefigure ofthe pin
assignment of connection terminal is symmetrical to lower
figure.
5
3
1
2
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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.
●
Keepyourfingersandhandsbehindthebarrier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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
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beatthe
centerofthejaws.
(
3
)
Ensurethatthetipsoftransformerjawsarefirmlyclosed.
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 8146

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