Kyoritsu KEW 2432 Manual

Kyoritsu Multimeter KEW 2432

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Side 1/1

INSTRUCTION MANUAL

KEW SNAP 2432／2433

KEW SNAP Series

LEAKAGE CURRENT TESTER

KEW SNAP 2432

KEW SNAP 2433

2. FEATURES

●Digital clamp tester for AC leakage 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

category CAT. , 300V and pollution degree 2.Ⅲ

●Tear drop shaped jaws for ease of use in crowded cable areas

and other tight places.

●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.

●Peak hold function to allow for measurement of current variation

as short as 10msec.

●Auto-power-off function prevents unnecessary power consumption

●Dynamic range of 4000 counts full scale.

●Large easy-to-read LCD display with letter height of 13mm.

●Operation confirming beeps.

●Insulation barrier at the tip of transformer jaws for improved safety.

3. SPECIFICATIONS

Measuring ranges and accuracy

Operating System: Sequential comparison

Display: LCD with max. reading of 3999 (MODEL

2432 & MODEL2433's 400A range), 6000

(MODEL2433's 40mA/400mA range)

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℃±5℃, 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. 13mA

Measurement Time: Approx. 40 hours

Auto-power-off Function:Turns power off about 10 minutes after the

last switch operation

Safety Standard: IEC 61010-2-032

2433: 480AAC max. for 10 seconds

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.

Counts equal to or less than 5 counts are corrected to zero.

The max indication at the 40mA/400mA range on MODEL2433 is 6000

counts. Minute current may exist while zero is displayed at 400A/400mA

range. Measurement should be made also at a lower range.

Model

2432

2433

Range

4mA

40mA

100A

40mA

400mA

400A

Measuring Range

0～3.999mA

0～39.99mA

0～80.0A

～100.0A

0～39.9mA

0～399.9mA

0～350.0A

～399.9A

Accuracy (Frequency range)

±1.0%rdg±5dgt （50/60Hz）

±2.5%rdg±10dgt （20～1kHz）

±1.0%rdg±5dgt （50/60Hz)

±2.5%rdg±10dgt （40～1kHz)

±5.0%rdg （50/60Hz）

±10.0%rdg （40～1kHz）

±1.0%rdg±5dgt （50/60Hz）

±2.5%rdg±10dgt （20～1kHz）

±1.0%rdg±5dgt （50/60Hz）

±2.5%rdg±10dgt （40～1kHz）

±2.0%rdg （50/60Hz）

±5.0%rdg （40～1kHz）

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 auto-power-off

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 the Data Hold 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.

Tra nsform J aws

Barr ier

Trigger

Ran ge Sel ector Sw itch

Han d Strap

Dis play

Frequency Selector Button

Peak Hold Button

Data Hold Button

●ＬＣＤ

Low Battery Warning

Frequency Response :

Wide

Frequency Response :

50/60Hz

Data Hold Indication

Peak Hold Indication

Function

6. OPERATING INSTRUCTIONS

6-1 Current Measurement

DANGER

● tIn order to avoid possible shock hazard, never make measuremen

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.

●When measuring current is 300A or more ( 400Hz or more ), be sure to

stop measurement within 5 minutes. Otherwise, transformer jaws may

heat to cause a fire or deformation of molded parts, which will degrade

insulation.

●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 40mm 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.

(1)Set the Range Selector Switch to the desired position. Current

to measure should be within the selected measuring range.

(2)Normal measurement (See Fig.1, 2):

Press the jaw trigger to open the transformer jaws and close

them over one conductor only. Measured current value is shown

on the display. Earth leakage current or small current that flows

through a grounded wire can also be measured by this method.

(3)Measuring out of balance leakage current (See Fig. 3):

Clamp onto all conductors except a grounded wire. Measured

current value is shown on the display.

Fig. 1 Load current Fig. 2 Earth leakage current

Load

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 2432 and KEW SNAP 2433 have

the following two settings for the Frequency Selector Button.

WIDE (20Hz-): Permits measurement of currents of fundamental

frequencies as well as currents of high frequencies

generated by such equipment as inverters

50/60Hz (20-approx.160Hz): Filters out high frequency currents and

measures current of fundamental

frequency only

Fig. 3 Measuring out of balance leakage current

Fig.4 KEW SNAP 2432/2433 Frequency Characteristic

Output characteristic are shown in Fig.4.

Load

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)

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 Peak Current Measurement

(1)Set the Range Selector Switch to the desired position.(Current to

measure should not exceed the selected measuring range.)

(2)Select "WIDE"or "50/60Hz"with the Frequency Selector Button.

(3)With the transformer jaws clamped onto the conductor under

test, press the Peak Hold Button to set the interment to the peak

measurement mode.("P" is shown on the display.)

(4)The display reads 1/√2 of the peak current value. Therefore,an

rms reading is shown when current of a sinusoidal waveform is

measured.

(5)After peak measurement, press the Peak Hold Button to return to

the normal measurement mode.

Note: When leakage current is measured in the peak measurement

mode, the reading may change if the transformer jaws are

opened and closed. Please read the display with the conductor

under test clamped, otherwise, after fixing the display by using

the data hold function, please remove the instrument from the

conductor to be measured, and read the display. To measure

the peak current again, please release the data hold, and return

the instrument to the normal measurement mode once with the

Peak Hold Button, then set it in the peak measurement mode.

7. OTHER FUNCTIONS

7-1 Auto-Power-Off Function

This is a function to prevent the instrument from being left powered

on and conserve battery power. The instrument automatically turns

off about 10 minutes after the last switch or button operation. To

return to the normal mode, turn the Range Selector Switch to OFF,

then to the desired position.

Disabling Auto-Power-Off Function:

To disable the auto-power-off function, power on the instrument

with the Data Hold Button pressed. About 3 seconds after powering

on the instrument, "P.OFF" is shown on the display. To enable the

auto-power-off function, turn on the instrument without pressing the

Data Hold Button.

Note: The auto-power-off function is disabled in the peak

measurement mode.

7-2 Date Hold Function

This is a function to freeze the readings on the display. When the

Data Hold Button is pressed once, the current reading is held even

though 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 auto-power-off function works while the instrument

is in the data hold mode, data hold is cancelled.

8. BATTERY REPLACEMENT

WARNING

In order to avoid possible shock hazard, always set the Range

Selector Switch to the OFF position before trying to replace the

batteries.

CAUTION

●Do not mix new and old batteries.

●Install batteries in the orientation as shown inside the battery

compartment, observing correct polarity.

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: For use for a long period of time,

use alkaline batteries.

Screw Battery

Compartment

Cover

Batteries

DISTRIBUTOR

Kyoritsu reserves the rights to change specifications or designs

described in this manual without notice and without obligations.

Overload Protection: 2432: 120AAC max. for 10 seconds

2433: 480AAC max. for 10 seconds

Withstand Voltage: VACrms (50/60Hz) for

metal part of transformer jaws and housing

case (except transformer jaw case)

Insulation Resistance: 10MΩ or greater at 1000V between metal

part of transformer jaws and housing case

(except transformer jaw case)

Conductor Size: Approx. 40mm in diameter max.

Dimensions: 185(L)×81(W)×32(D)mm

Weight: 2432: Approx. 290g including batteries

2433: Approx. 270g including batteries

Accessories: Two R03 (UM-4) batteries

Carrying case Model 9052

Instruction manual

○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).

Incoming wire

Ｏ:Device which is

not directly

connected to the

mains power supply

Socket

Interior wiring

3470 5 sec. between

1452

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 handyto enablequick reference

whenevernecessary.

●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.

 isreservedforconditionsandactionsthatcancauseWARNING

seriousorfatalInjury.

 isreservedforconditionsandactionsthatcancauseCAUTION

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.

This symbol ismarkedwhere the user must referto the

in st ru ct io n manu al s o a s no t t o caus e pe rs on al i nj ur y or 

instrumentdamage.



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).

This instrument satisfies the marking requirement defined in

theWEEE Directive (2002/96/EC). This symbolindicates

separatecollectionforelectricalandelectronicequipment.

DANGER

●Ne ver ma ke measurement on a c ircuit havi ng potent ial o f

300VACorgreater.

●Do n ot at tempt to mak e measurement in the pre senc e 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.

●Neve r open the  battery c ompa rtme nt cov er 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

con diti ons. Oth erwise, safety fun ctions eq uipped 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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.

●Donottrytoreplacethebatteriesifthesurfaceoftheinstrument

iswet.

●Always switch off the instrument before opening the battery

compartmentcoverforbatteryreplacement.

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.

●

Thisinstrumentisn'tdust&waterproofed.Keepawayfromdust

andwater.

MeasurementCAT 300V,pollutiondegree2Ⅲ

IEC61326-1(EMC)

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"Low

pass"filtercircuitinincorporatedintotheinstrumentwhichworks

wh en "50/60Hz" frequency res ponse is selected with th e

FrequencySelector Button. Cut-off frequency of the"Low pass"

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,fequencyresponseisswitched

toWIDEwith"WIDE"markshownonthedisplay.

100％

50％

20％

10％

5％

5ｋ1ｋ 2ｋ500100 200502010

ー30

ー20

ー10

Attenuation〔dB〕

Frequency〔Hz〕

Percentage

Typical characteristic：

４/40/400mA Range

Typical characteristic：

“WIDE”frequency response

Typical characteristic：

“50/60Hz”frequency response

Low pass ﬁlter -24dB/oct

Typical characteristic：

100/400A Range

Environmental standards:

 EURoHSdirectivecompliant

Produkt Specifikationer

Mærke:	Kyoritsu
Kategori:	Multimeter
Model:	KEW 2432

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