Kyoritsu Electrical Instruments 2127 User manual

INSTRUCTION MANUAL

WARNING

he abov e instructions m ay i mpair t he p rotection

instrument damage and/or damage to equipment under test.

DANGER

barriers during measurement.

WARNING

your local KYORITSU distributor.

CAUTION

instrument. Do not use abrasives or solvents.

NOTE

there are high resistance or capacitance components.

Range

Display Range

Accuracy (sine wave)

60A

0.00, 0.06 – 62.99A

600A

57.0 – 629.9A

1000A

570 – 1049A

Range

Display Range

Accuracy (sine wave)

60.00V

0.00 – 62.99V

±1.5 %rdg±4dgt (40-1kHz)

±1.0%rdg±2dgt (45-65Hz)
±1.5%rdg±4dgt (40-1kHz)

Range

Display Range

Accuracy (sine wave)

999.9Hz

0.0 – 999.9Hz

9.999kHz

0.950 – 9.999kHz

Range

Display Range

Accuracy

60.00V

0.0 - ±62.99V

±1.0 %rdg±3dgt

600.0V

±57.0V - ±629.9V

±1.2 %rdg±3dgt

Range

Display Range

Accuracy

600.0Ω

0.0 - 629.9Ω

±1.0 %rdg±5dgt

6.000kΩ

0.570 - 6.299kΩ

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

Range

Display Range

Accuracy

600.0Ω

0.0 - 629.9Ω

Bz threshold value < 90Ω

Range

Display Range

Accuracy

1.000µF

0.000 - 1.049µF

±3.0 %rdg±15dgt

10.00µF

0.95 - 10.49µF

100.0µF

9.5 - 104.9µF

Range

Display Range

Accuracy

2.000V

0.000 - 2.099V

±4 %rdg±5dgt

Trigger

Cap

Barrier of Test Leads

V/

Barrier

Function Switch

Current Sensor

Terminal

LCD

DIGITAL CLAMP METER

KEW2127R

SELECT Key

COM

Wri st Strap

HOLD Key

Ω Terminal

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 the user to ensure safe operation of the
instrument and retain it in safe condition. Therefore, read through these
operating instructions before using the instrument.

● Read through and understand the instructions contained in this
manual before using the instrument.

● Keep the manual at hand to 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
provided by the instrument and test leads, and may cause injury,

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

WARNING is reserved for conditions and actions that

CAUTION is reserved for conditions and actions that

● Marks listed below are used on this instrument.
User must refer to the manual.

Instrument with double or reinforced insulation

AC D C G round (Earth)

Measurement Category

O Circuits which are not directly connected to the mains power supply.
CAT I I Primary electrical circuits of equipment connected to an AC

CAT I II Primary electrical circuits of the equipment connected directly

CAT IV The circuit from the service drop to the service entrance, and

This i nstrument i s d esigned f or C AT IV 3 00V/ CAT III 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.

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are likely to cause serious or fatal injury.

can cause serious or fatal injury.

can cause injury or instrument damage.

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

This instrument i s s ubject t o WEEE D irective ( 2002/96/EC).
Please contact our dealer near you at disposal.

electrical outlet by a power cord.

to t he d istribution panel, and f eeders f rom t he d istribution
panel to outlets.

to t he p ower meter and p rimary ov er c urrent pr otection
device (distribution panel).

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● 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 the maximum allowable 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

● 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 proper ope ration on a k nown source before use or take
action as a result of the indication of the instrument.

● Firmly at tach t he caps to the test leads 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 us ed
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 substitute parts or make any modification t o the
instrument. For repair or re-calibration, return the instrument to

● Use of this instrument i s limited to 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

● The LC D shows some digits at the ACV and t he DCV ranges
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 takes t ime t o settle t he reading i f

2. Specification

Temperature: 23 ± 5°C, Humidity: 45 - 75%

ACA / RMS (Auto Range)

±1.5 %rdg±4dgt (45-65Hz)

Guaranteed accuracy: 0.1A - 1000A
Input protective current: AC1200A

ACV (Auto Range)

600.0V 57.0 – 629.9V

Guaranteed accuracy: 0.1V – 600V、900Vpeak or less
Input protective voltage: AC/DC720V 10 sec

±2.0 %rdg±5dgt (40-1kHz)

Hz Frequenc y – AC measurement (Auto Range)

Guaranteed accuracy: 20Hz – 9.9kHz
Trigger threshold: 4A or more (ACA), 2V or more (ACV)

DCV (Auto Range)

Guaranteed accuracy: 0V – ±600V
ACV/DCV Input impedance: approx. 10MΩ

Resistance (Auto Range)

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

Open-loop voltage: less than 3V
Measurement current: less than 1mA

Capacitance (Auto Range)

Guaranteed accuracy: 0µF - 100µF

Diode

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)

●Battery life (ACA, continuous, no load, with R03):

approx. 170 hours (LED for NCV OFF)
approx. 70 hours (LED for NCV ON)

< 8mA (LED for NCV ON)

±0.1 %rdg±3dgt

±2.0 %rdg±3dgt

±3.0 %rdg±10dgt

Beeps less than 90Ω

Screw

●Dimension, Weight: 204(L)×81(W)×36(D)mm,

DANGER

trument w hen

measurement.

DANGER

measurement.

WARNING

the capacitor before starting a capacitance measurement.

Function

Range

Display Range

Response time

ACA
(Auto Range)

999.9A

0.0, 0.6 – 999.9A

10ms
(sine wave)

1500A

1000 – 1574A

10ms
(sine wave)

0.0,
±0.6 – ±629.9V

DANGER

voltages may affect NCV indication.

WARNING

Cover for battery replacement.

CAUTION

Compartment.

Red LED lights up in electric
Black

Red

ACV

DCV

Black

Red

Resistance

Continuity

Capacitance

Diode

♪

Press the SELECT key to toggle functions

ACA

PEAK

Frequency

Default

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

Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.

Maximum R MS v alue

Input waveform
0V

20V

-60V

Input waveform

Replace the batteries

this mark appears.

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

●Disconnect t he t est l eads f rom t he i ns
performing a t est.

●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 d uring

(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 t he trigger to open the Current 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

●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

(1) Set t he F unction s witch t o A CV or D CV pos ition. F or PEAK 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 is reversed, the LCD indicates the “ – “ mark (DCV
measurement)

Correct

Incorrect

5. R esistance / C apacitance ( Continuity / Diode)
Measurement

Never use the instrument on an energized ci rcuit. D ischarge

(1) Set the Function switch to Resistance or Capacitance position. For

Continuity measurement, set t he switch to 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 the 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.

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● 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 the S leep mode, r otate t he F unction
switch or press any k ey. To disable 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.

ACV 900V 0.0, 0.6 – 944.9V

DCV 600V

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.

(RMS)

Peak v alue d isplayed on D CV f unction has l arger abs olute
value.When a negative voltage value has a larger absolute value
than a positive v oltage v alue, the negative 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.

1ms

(Indicated value)

● The L ED m ay not 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

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.

field exceeding AC70V.

7. Battery Replacement

● 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

● Do not mix old and new batteries.

● Install bat teries i n c orrect po larity as indicated i n t he B attery

(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.

DISTRIBUTOR

01-17 92-2281B