KYORITSU KEW2127R User manual

INSTRUCTION MANUAL
DIGITAL CLAMP METER
KEW2127R
1. Safety Warnings
This i nstrument has been designed, m anufactured and tested
according to IEC 61010: Safety requirements for Electronic measuring
apparatus, a nd de livered i n t he bes t c ondition af ter p assed t he
inspection. This instruction manual contains warnings and safety rules
which must be obs erved by t he user t o ensure safe ope ration of t he
instrument and retain it in safe condition. Therefore, read through these
operating instructions before using the instrument.
WARNING
● Read t hrough and understand the instructions contained in this
manual before using the instrument.
● Keep the manual at hand t o enable quick r eference whenever
necessary.
● The instrument is to be used only in its intended applications.
● Understand and follow all the safety instructions contained in the
manual.
● It is essential that the above instructions are adhered to. Failure
to fo llow t
he abov e instructions m ay i mpair t he p rotection
provided by the instrument and test leads, and may cause injury,
instrument damage and/or damage to equipment under test.
The symbol indicated on the instrument means that the user must
refer to th e r elated p arts in t he m anual f or s afe op eration of t he
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 injury or instrument damage.
● Marks listed below are used on this instrument.
User must refer to the manual.
Instrument with double or reinforced insulation
Indicates t hat t his instrument c an c lamp on bar e c onductors
when measuring a v oltage c orresponding t o t he applicable
measurement category, which is marked next to this symbol
AC D C G round (Earth)
This instrument i s s ubject t o WEEE D irective ( 2002/96/EC).
Please contact our dealer near you at disposal.
Measurement Category
O Circuits which are not directly connected to the mains power supply.
CAT I I Primary el ectrical circuits of equipment connected to an A C
electrical outlet by a power cord.
CAT I II Primary electrical circuits of the equipment connected directly
to t he d istribution panel, and f eeders f rom t he d istribution
panel to outlets.
CAT IV The circuit from the service drop to the service entrance, and
to t he p ower meter and p rimary ov er c urrent pr otection
device (distribution panel).
This i nstrument i s d esigned f or C AT IV 3 00V/ C AT I II 600V. Te st
leads M -7066A w ith t he su pplied ca ps are d esigned f or C AT
IV600V/ CAT III 1000V and without the caps are for CAT II 1000V.
DANGER
● Never make measurements under the circumstances exceed the
designed m easurement c ategory and the r ated v oltage of t he
instrument and the test leads.
● Do not at tempt t o make measurement i n t he presence of
flammable gas ses. O therwise, t he us e of t he i nstrument may
cause sparking, which can lead to an explosion.
● Never attempt to use the instrument if its surface or your hand is
wet.
● Do not exceed t he maximum al lowable input of any measuring
range.
● Never open the Battery cover during a measurement.
● To avoid electrical shock by touching the equipment under test or
its surroundings, be sure to wear insulated protective gear.
● Never measure current while the test leads are inserted into the
input terminals.
● Test leads to be used for voltage measurements shall be rated as
appropriate for Measurement Category III or IV according to IEC
61010-031 and shall have a voltage rating of 600V or higher.
● Barriers on t he instrument body and the t est leads pr ovide
protection t o k eep y our f ingers and h ands f rom t ouching an
object under t est. K eep y our f ingers an d hands be hind t he
barriers during measurement.
WARNING
● Never attempt to make measurement if any abnormal conditions,
such as broken case and exposed metal parts are found on the
instrument or test leads.
● Verify p roper ope ration o n a k nown source bef ore us e o r t ake
action as a result of the indication of the instrument.
● Firmly at tach t he cap s t o t he t est l eads w hen p erforming
measurements in CAT III or higher test environments. When
KEW2127R and t he t est l eads ar e co mbined an d used
together, w hichever i s l ower cat egory & v oltage t o e arth
either of them belong to is applied.
● Do not r otate t he Function S witch if t he i nstrument and the
equipment under test are connected.
● Do not install s ubstitute p arts or m ake any m odification t o t he
instrument. F or repair or r e-calibration, return the instrument to
your local KYORITSU distributor.
CAUTION
● Use of t his instrument i s l imited t o domestic, c ommercial an d
light industry applications. Strong electromagnetic interference or
strong magnetic fields, generated by large currents, may cause
malfunction of the instrument.
● Connect the test leads to the terminals firmly.
● This instrument isn’t water proofed. Keep away from water.
● Do not pull or twist the test leads to prevent the risk of damage.
● Power of f t he instrument af ter us e. R emove bat teries if t he
instrument is to be stored and will not be in use for a long period.
● Do no t ex pose the instrument t o the direct s unlight, h igh
temperature and humidity or dewfall.
● Use a cloth dipped in water or neutral detergent for cleaning the
instrument. Do not use abrasives or solvents.
NOTE
● The LC D s hows s ome digits at t he A CV and t he DCV r anges
even while the test leads are open. In addition, the LCD shows
some di gits instead of 0 w hen s hort-circuiting t he t est leads.
However, these phenomena don’t affect measurement results.
● A r esistance m easurement t akes t ime t o settle t he reading i f
there are high resistance or capacitance components.
2. Specification
Temperature: 23 ± 5°C, Humidity: 45 - 75%
ACA / RMS (Auto Range)
Range
Display Range
Accuracy (sine wave)
60A
0.00, 0.06 – 62.99A
±1.5 %rdg±4dgt (45-65Hz)
±2.0 %rdg±5dgt (40-1kHz)
600A
57.0 – 629.9A
1000A
570 – 1049A
Guaranteed accuracy: 0.1A - 1000A
Input protective current: AC1200A
ACV (Auto Range)
Range
Display Range
Accuracy (sine wave)
60.00V
0.00 – 62.99V
±1.5 %rdg±4dgt (40-1kHz)
600.0V 57.0 – 629.9V
±1.0%rdg±2dgt (45-65Hz)
±1.5%rdg±4dgt (40-1kHz)
Guaranteed accuracy: 0.1V – 600V、900Vpeak or less
Input protective voltage: AC/DC720V 10 sec
Hz Frequency – AC measurement (Auto Range)
Range
Display Range
Accuracy (sine wave)
999.9Hz
0.0 – 999.9Hz
±0.1 %rdg±3dgt
9.999kHz
0.950 – 9.999kHz
Guaranteed accuracy: 20Hz – 9.9kHz
Trigger threshold: 4A or more (ACA), 2V or more (ACV)
DCV (Auto Range)
Range
Display Range
Accuracy
60.00V
0.0 - ±62.99V
±1.0 %rdg±3dgt
600.0V
±57.0V - ±629.9V
±1.2 %rdg±3dgt
Guaranteed accuracy: 0V – ±600V
ACV/DCV Input impedance: approx. 10MΩ
Resistance (Auto Range)
Range
Display Range
Accuracy
600.0Ω
0.0 - 629.9Ω
±1.0 %rdg±5dgt
6.000kΩ
0.570 - 6.299kΩ
±2.0 %rdg±3dgt
60.00kΩ
5.70 - 62.99kΩ
600.0kΩ
57.0 - 629.9kΩ
6.000MΩ
0.570 - 6.299MΩ
±3.0 %rdg±3dgt
40.00MΩ
5.70 - 41.99MΩ
±5.0 %rdg±3dgt
Guaranteed accuracy: 0Ω - 40MΩ
Open-loop voltage: less than 3V
Measurement current: less than 1mA
Input protective voltage: AC/DC600V 10sec
(Resistance/ Continuity/ Capacitance/ Diode)
Continuity
Range
Display Range
Accuracy
600.0Ω
0.0 - 629.9Ω
Bz threshold value < 90Ω
Open-loop voltage: less than 3V
Measurement current: less than 1mA
Capacitance (Auto Range)
Range
Display Range
Accuracy
1.000µF
0.000 - 1.049µF
±3.0 %rdg±15dgt
10.00µF
0.95 - 10.49µF
±3.0 %rdg±10dgt
100.0µF
9.5 - 104.9µF
Guaranteed accuracy: 0µF - 100µF
Diode
Range
Display Range
Accuracy
2.000V
0.000 - 2.099V
±4 %rdg±5dgt
Guaranteed accuracy: 0V - 2V, Open-loop voltage: < 3.5V
Measurement current: approx. 0.8mA (Vf = 0.6V)
●Measuring method: ⊿Σ modulation
●Over-range indication: OL
●Measurement cycle: 2.5 times per second
●Crest factor: less than 3 (45-65Hz)
Add ± 0.5%rdg±5dgt t o abov e s pecified accuracies. A pplicable
functions: ACA (less than 1500Apeak), ACV (900Vpeak or less)
●Applicable Standards:
IEC 61010-1/ 61010-2-032/ 61010-2-033 (instrument)
Pollution degree 2, Indoor use, Altitude up to 2000m
CAT III 600V / CAT IV 300V
IEC 61010-031(Test leads Model 7066A)
w/ c aps CAT IV 600V / CAT III 1000V
w/o caps CAT II 1000V
EN61326 (EMC)
In t he r adio-frequency e lectromagnetic f ield of 3V /m, ac curacy i s
within five times the rated accuracy.
EN50581 (RoHS)
●Withstand voltage: AC5160Vrms 5s ec between c urrent s ensor and
enclosure or circuit and enclosure
●IP rating: IP40 (IEC60529)
●Insulation r esistance: >100MΩ /1000V between enclosure and
electrical circuit
●Operating Temperature and humidity range: 0 to 40°C 85%RH or less
(no condensation)
●Storage Temperature and humidity range: -20 to 60°C 85%RH or less
(no condensation)
●Power source : DC3V R0 3 / LR03 (AAA) ×2
●Current consumption : < 4mA (LED for NCV OFF)
< 8mA (LED for NCV ON)
●Battery life (ACA, continuous, no load, with R03):
approx. 170 hours (LED for NCV OFF)
approx. 70 hours (LED for NCV ON)
Trigger
Cap
Barrier of Test Leads
SELECT Key
V/
Ω Terminal
HOLD Key
Barrier
Function Switch
Current Sensor
Wrist Strap
COM
Terminal
LCD
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Beeps less than 90Ω
Screw
●Dimension, Weight: 204(L)×81(W)×36(D)mm,
approx. 230g (including batteries)
●Accessories:
Test leads Model 7066A 1set /Battery R03(AAA) 2pcs /Instruction
manual 1pce /Carrying case Model 9079 1pce
3. ACA (PEAK / Frequency) Measurement
DANGER
●Disconnect t he t est l eads f rom t he i ns
trument w hen
performing a test.
●Do n ot exceed the r ated v oltage ( 600V) an d the ca tegory
ratings of the instrument.
●Keep your fingers and hands behind the barrier during
measurement.
(1) Set the Functions switch to ACA position. For PEAK or frequency
measurement, set the switch to ACA and press the SELECT key.
(2) Press the t rigger t o open t he C urrent S ensor and clamp t he one
conductor (Dia, 33mm max.) under test.
NOTE
Measurement ac curacy i s guar anteed w hen t he measured obj ect i s
placed at the center of the Current Sensor.
4. ACV / DCV (PEAK / Frequency) Measurement
DANGER
●Before st arting a m easurement, en sure t hat t he F unction
switch is set to the appropriate position.
●Do n ot e xceed t he r ated v oltage (600V) an d the cat egory
ratings of the instrument.
●Keep your fingers and hands behind the barrier during
measurement.
(1) Set t he F unction s witch t o A CV or D CV pos ition. F or P EAK or
frequency measurement, s et t he s witch t o A CV and pr ess t he
SELECT key. (Frequency is ACV only)
(2) Firmly connect the test leads to V/Ω and COM terminals.
NOTE
If the connection i s reversed, t he LCD indicates t he “ – “ mark (DCV
measurement)
5. R esistance / C apacitance ( Continuity / D iode)
Measurement
WARNING
Never u se t he i nstrument o n an en ergized ci rcuit. D ischarge
the capacitor before starting a capacitance measurement.
(1) Set the Function switch to Resistance or Capacitance position. For
Continuity measurement, s et t he s witch t o Resistance a nd pr ess
the SELECT k ey. F or D iode m easurement, s et t he s witch t o
Capacitance and press the SELECT key.
(2) Firmly connect the test leads to V/Ω and COM terminals.
NOTE
● LCD shows “OL” when the test leads are open.
(except for capacitance measurement)
● The LCD shows “OL” if the test lead connection is reversed for diode
measurement.
6. Other Functions
● Data Hold
Press the Hold key. The LCD shows “ ” mark and the reading will
be held.
Press the Data Hold Key again to release the display.
● Backlight function
Press the HOLD key 1 sec or longer to turn on t he backlight. Press
the HOLD key anot her 1 s ec or longer t o t urn i t of f. T he l ight
automatically turns off in 1 min.
● Low battery indication
The LCD shows “ “ mark when the batteries fall below the normal
operating voltage.
● Sleep Function
Automatically powers off the instrument in about 10min after the last
switch oper ation. B uzzer b eeps f ive t imes one m inute bef ore
entering into the Sleep mode, and also one time just before entering
into t he m ode. To ex it f rom t he S leep mode, r otate t he F unction
switch or press any k ey. To d isable t he S leep function, p ress t he
HOLD key and power on the instrument.
Confirm that the LCD shows “ “about 1 sec.
Sleep function is disabled in the PEAK hold mode.
● PEAK Hold (PEAK) function
Press the SELECT key on ACA, ACV or DCV function to start PEAK
measurement. T he LC D s hows “ “ and updat es t he m ax
measured value repeatedly during a measurement.
Function
Range
Display Range
Response time
ACA
(Auto Range)
999.9A
0.0, 0.6 – 999.9A
10ms
(sine wave)
1500A
1000 – 1574A
ACV 900V 0.0, 0.6 – 944.9V
10ms
(sine wave)
DCV 600V
0.0,
±0.6 – ±629.9V
1ms
On A CA or A CV f unction, t he d isplayed value is peak v alue.
Therefore, when measuring a sine wave, the displayed value will be
√2 of the rms PEAK value.
Peak v alue d isplayed on D CV f unction has l arger abs olute
value.When a negative v oltage v alue has a larger abs olute v alue
than a positive v oltage v alue, the n egative voltage v alue w ill b e
displayed.
● NCV Function
Red LED for NCV lights up at All functions except for OFF when an
electric field exceeding AC70V is detected by the sensor installed in
Current Sensor.
It indicates a presence of voltage in an electrical circuit or equipment
without touching them.
DANGER
● The L ED m ay no t l ight up d ue t o i nstallation c ondition of
electrical circuit or equipment. Never touch the circuit under
test to avoid p ossible danger ev en i f t he L ED f or N CV
doesn’t light up.
● The w ay y ou h old or p lace the i nstrument o r ext ernal
voltages may affect NCV indication.
NCV Sensor can detect electrical field only from the direction
indicated in the below figure.
Put the fixed element (left side) closer to the conductor under test.
Detection against in-wall outlet is impossible.
7. Battery Replacement
WARNING
● Replace t he b atteries w hen a Low B attery V oltage warning
" " m ark i s indicated on t he LC D. Otherwise, pr ecise
measurement c annot be m ade. If batteries are completely
exhausted, the LCD goes blank without showing " " mark.
● Do not try to replace the batteries if the surface of the instrument
is wet.
● Disconnect the test leads from the object under test and power
off t he i nstrument bef ore open ing t he B attery Compartment
Cover for battery replacement.
CAUTION
● Do not mix old and new batteries.
● Install bat teries i n c orrect po larity as indicated i n t he B attery
Compartment.
(1) Set the Function Switch to "OFF" position.
(2) Unscrew and r emove t he B attery Compartment C over on the
instrument.
(3) Replace the batteries observing correct polarity. Use new two AAA
1.5V batteries.
(4) Install the Battery Compartment Cover and tighten the screw.
01-17 92-2281B
Red LED lights up in electric
field exceeding AC70V.
Black
Red
ACV
DCV
Black
Red
Resistance
Continuity
Capacitance
Diode
♪
Press the SELECT key to toggle functions
ACA
PEAK
Frequency
Default
Correct Incorrect
Press the SELECT key to toggle functions
ACA
PEAK
Frequency
Default
DCV
PEAK
Default
Resistance
Default
Continuity
Capacitance
Default
Diode
Press the SELECT key to toggle functions
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.
Maximum R MS v alue
(Indicated value)
Input waveform
(RMS)
0V
20V
-60V
Input waveform
Replace the batteries
with new ones when
this mark appears.
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