Kyoritsu Electrical Instruments Works, Ltd. KEW8146 User manual

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.
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.
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
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
TransformJaws Trigger Cable Outputconnector
Barrier
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.
.
# 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
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
MINIDIN 6 PIN
50 M Ω orgreaterat 1000 V
betweenJawandenclosure
betweenenclosureandoutputterminal
betweenJawandoutputterminal
Model
Ratedvoltage
Outputvoltage
Measuringrange
Accuracy
(Input:sinewave)
Temperature&humidityrange
(Guaranteedaccuracy)
Operatingtemperaturerange
Storagetemperaturerange
Maximumpermissibleinput
Output
impedance
Locationforuse
Applicable
standards
Withstand
voltage
Insulation
resistance
ConductorSize
Dimension
Cablelength
Outputterminal
Weight
Accessories
Option
6. Specifications
 23 ± 5 ℃ ,relativehumidity: 85 %orless(nocondensation)

0 〜 50 ℃ ,relativehumidity: 85 %orless(nocondensation)
-
20 〜 60 ℃ ,relativehumidity: 85 %orless(nocondensation)
Altitudeupto
2000 m,Indoors
IEC
61010 - 1 ,IEC 61010 - 2 - 032
MeasurementCAT.
Ⅲ
( 300 Vrms)
Pollutiondegree 2
IEC 61326 - 1 (EMC),EN 50581 (Environmentalstandard)
Approx.
2 m
Instructionmanual
Cablemarker
Approx.
510 g
Approx.
240 g
Approx.
150 g
186 (L) × 129 (W) × 53 (D)mm 128 (L) × 81 (W) × 36 (D)mm 100 (L) × 60 (W) × 26 (D)mm
Approx.
68 mmindiameter(max.)
Approx.
40 mmindiameter(max.)
Approx.
24 mmindiameter(max.)
AC
3470 Vrms( 50 / 60 Hz)for 5 sec.
betweenJawandenclosure
betweenenclosureandoutputterminal
betweenJawandoutputterminal
Approx.
60 Ω Approx. 100 Ω
Approx. 90 Ω
AC 100 Armscontinuous( 50 / 60 Hz)AC 70 Armscontinuous( 50 / 60 Hz)AC 30 Armscontinuous( 50 / 60 Hz)
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)
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)
AC 0 〜 100 AAC 0 〜 70 AAC 0 〜 30 A
AC
0 〜 5000 mV
(
50 mV/A)
AC
0 〜 3500 mV
(
50 mV/A)
AC
0 〜 1500 mV
(
50 mV/A)
AC
100 Arms( 141 . 4 Apeak)AC 70 Arms( 99 . 0 Apeak)AC 30 Arms( 42 . 4 Apeak)
KEW
8148 KEW 8147 KEW 8146
MODEL 7146 （ Banana Φ 4 adjusterplug ）
MODEL 7185 （ Extensioncable ）
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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
# DANGER
●
Never make measurement on a circuit in which the
electricalpotentialexceedsAC
300 V.
● 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.
5
3
12
4
6
TransformJaws Trigger Cable Outputconnector
Barrier
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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 D 3 - 16
DISTRIBUTOR
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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.
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.
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
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
TransformJaws Trigger Cable Outputconnector
Barrier
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.
.
# 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
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
MINIDIN 6 PIN
50 M Ω orgreaterat 1000 V
betweenJawandenclosure
betweenenclosureandoutputterminal
betweenJawandoutputterminal
Model
Ratedvoltage
Outputvoltage
Measuringrange
Accuracy
(Input:sinewave)
Temperature&humidityrange
(Guaranteedaccuracy)
Operatingtemperaturerange
Storagetemperaturerange
Maximumpermissibleinput
Output
impedance
Locationforuse
Applicable
standards
Withstand
voltage
Insulation
resistance
ConductorSize
Dimension
Cablelength
Outputterminal
Weight
Accessories
Option
6. Specifications
 23 ± 5 ℃ ,relativehumidity: 85 %orless(nocondensation)

0 〜 50 ℃ ,relativehumidity: 85 %orless(nocondensation)
-
20 〜 60 ℃ ,relativehumidity: 85 %orless(nocondensation)
Altitudeupto
2000 m,Indoors
IEC
61010 - 1 ,IEC 61010 - 2 - 032
MeasurementCAT.
Ⅲ
( 300 Vrms)
Pollutiondegree 2
IEC 61326 - 1 (EMC),EN 50581 (Environmentalstandard)
Approx.
2 m
Instructionmanual
Cablemarker
Approx.
510 g
Approx.
240 g
Approx.
150 g
186 (L) × 129 (W) × 53 (D)mm 128 (L) × 81 (W) × 36 (D)mm 100 (L) × 60 (W) × 26 (D)mm
Approx.
68 mmindiameter(max.)
Approx.
40 mmindiameter(max.)
Approx.
24 mmindiameter(max.)
AC
3470 Vrms( 50 / 60 Hz)for 5 sec.
betweenJawandenclosure
betweenenclosureandoutputterminal
betweenJawandoutputterminal
Approx.
60 Ω Approx. 100 Ω
Approx. 90 Ω
AC 100 Armscontinuous( 50 / 60 Hz)AC 70 Armscontinuous( 50 / 60 Hz)AC 30 Armscontinuous( 50 / 60 Hz)
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)
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)
AC 0 〜 100 AAC 0 〜 70 AAC 0 〜 30 A
AC
0 〜 5000 mV
(
50 mV/A)
AC
0 〜 3500 mV
(
50 mV/A)
AC
0 〜 1500 mV
(
50 mV/A)
AC
100 Arms( 141 . 4 Apeak)AC 70 Arms( 99 . 0 Apeak)AC 30 Arms( 42 . 4 Apeak)
KEW
8148 KEW 8147 KEW 8146
MODEL 7146 （ Banana Φ 4 adjusterplug ）
MODEL 7185 （ Extensioncable ）
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]