Kyoritsu Electrical Instruments Works, Ltd. KEW2040 Instruction Manual

INSTRUCTION MANUAL
DIGITAL CLAMP METER
KEW SNAP
SERIES
KEW2040 600A AC Only Type
KEW2055 1000A AC/DC Type

3. Specification

3-1. Measuring range & accuracy
(accuracy guaranteed at 23 5 .humidity 45
℃± ℃
AC Current 600A, 1000A Function
Accuracy
Measuring
Function
Range
KEW2040
1.5%rdg 5dgt
± ±
(50/60Hz)
600A 0-600.0A
3.5%rdg 8dgt
± ±
(40-400Hz)
1000A 0-1000A N/A
DC Current 600A, 1000A Function
Accuracy
Measuring
Function
Range KEW2040
600A 0-600.0A N/A
±
1000A 0-1000A N/A
AC Voltage Function
Auto-ranging, Input impedance: approx. 10M
（
Accuracy
Measuring
Range
Range KEW2040
1.3%rdg
± ±
6/60/600V 1-600.0V
3.0%rdg 5dgt (40
± ±
DC Voltage Function
Auto-ranging, Input impedance: approx. 10M
（
Accuracy
Measuring
Range
Range
KEW2040
600mV/6/
0-600.0V 1.0%rdg
±
60/600V
Resistance Continuity/Diode Check Function
（ ）
Accuracy
Measuring
Range
Range KEW2040
600 /6k/
Ω
60k/600k 0-6M 1.0%rdg
Ω Ω ±
6M
Ω
6.00M-
60M 5%rdg
Ω ±
60.00M
Ω
Cont Buzzer 0-600.0 Buzzer sounds at 100
Ω
Diode Test voltage: 0-2V
Frequency/ DUTY Function Auto-ranging for
（
Frequency
）
Accuracy
Measuring
Range
Range KEW2040
ACA 40Hz 400Hz
−
0.5%rdg
±
ACV 1Hz 10kHz
∼
0.1-99.9%
2.5%rdg
±
(Pulse width/Pulse period)
Note: Measurable inputs are: 40Vrms@ACV or
60Arms@AC600A, 350A@AC1000A Range
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１ ． Features
Designed to meet international safety standards.
●
IEC61010-1.IEC61010-031:2002 & IEC61010-2-032
Measurement Category (CAT.) IV 600V
Pollution Degree 2
Double molded main body provides comfortable
●
single handed grip
Data Hold Function
●
LCD Backlight function to facilitate working at
●
dimly lit situations. (KEW2055 only)
REL function to indicate measurement variation.
●
(Current, voltage, Resistance measurement)
Min/Max Function enables easy reading of min &
●
max value during measurement.
With Continuity & Diode Check Function
●
NCV Non Contact Voltage
● （
check.
600V input protection.
●
Sleep Function to extend battery life.
●
With Bar Graph, 6039 counts
●

2. 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 passed the inspection. This
instruction manual contains warnings and safety
rules which must be observed 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.
WARNING
Read through and understand the 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.
U n d e r s t a n d a n d f o l l o w a l l t h e s a f e t y
●
instructions contained in the manual.
It is essential that the above instructions are
●
adhered to.
Failure to follow the above instructions 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 the related parts in the manual
for safe operation of the instrument. It is essential to
read the instructions wherever the
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.
3-2. General Specification
Mode of operation : ∑ mode
● Δ
85%) Display : max. 6039 counts
∼ ●
(Frequency: 9999) & Bar graph
Over-range indication : "OL" displayed when exceeding
●
the measuring range. (except for AC/DCV and 1000A
KEW2055
Function)
Range switching :
●
1.5%rdg 5dgt
± ±
Auto-ranging / Voltage, Resistance Range
(50/60Hz)
Single range / Continuity, Diode check and DUTY
3.5%rdg 8dgt
± ±
Sample rate : three times per second
●
(40-400Hz)
Functional construction :
●
OFF/ACA/ACV/DCV/ KEW2040
Ω
OFF/ACA/DCA/ACV/DCV/
Ω
Keys :
●
KEW2055
SELECT(AC/DC switching & /
Hz/DUTY, MIN/MAX, HOLD/ Back Light (KEW2055)
1.5%rdg 5dgt
±
Power source : DC3V/ R03(UM-4) x 2pcs
●
Low battery warning : "
●
2.4V
Ω）
Temperature & humidity : 23
● ℃±
accuracy guaranteed 85% or less (no condensation)
KEW2055
Operating temperature :0
● ∼
4dgt (50/60Hz)
& humidity range 85% or less (no condensation)
400Hz)
∼
Storage temperature : -20
●
& humidity range 85% or less (no condensation)
Current consumption : approx. 12 mA
●
Ω）
Sleep Function : Automatically powered off in about
●
15 min after the last Function switch operation.
KEW2055
Press any key or rotate the Function Switch from
OFF to any position to exit from the Sleep state.
3dgt
±
Applicable Standards
●
IEC 61010-1:2001
Measurement CAT. IV 600V Pollution degree 2
IEC 61010-031:2002, IEC 61010-2-032
KEW2055
EMC EN 61326
：
EN 55022
・
5dgt
±
EN 61000-4-2 (performance criterion B)
・
EN 61000-4-3 (performance criterion B)
・
Overload Protection
●
8dgt
±
Current Range : 720A AC/ 10 sec @KEW2040
or less
Ω
1200A AC/DC/ 10 sec @KEW2055
Voltage Range : 720V AC/DC/ 10sec
Resistance Range : 600V AC/DC/ 10sec
Withstand Voltage
●
6880V AC TRMS 50/60Hz
（ ）
(between Jaws and electrical circuit/ between internal
KEW2055 circuit and enclosure)
Insulation Resistance : 10M
●
5dgt
±
between electrical circuit and enclosure
（
Conductor size
●
5dgt
±
KEW2040: approx. 33mm
KEW2055: approx. 40mm
GlobalTestSupply
www.
Marks listed in the table below are used on this
●
instrument.
User must refer to the manual.
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.
AC
DC
AC & DC
Function for wiring
）
Never make measurement on a circuit in which
●
voltage over AC600V exists.
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.
Transformer jaw tips are designed not to short
●
the circuit under test. If equipment under test
has exposed conductive parts, however, extra
precaution should be taken to minimize the
possibility of shorting.
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.

The instrument is to be used only in its intended
●
applications or conditions. Otherwise, safety
functions equipped with the instrument doesn
work, and instrument damage or serious personal
injury may be caused.
Never attempt to make measurement if any
●
abnormal conditions, such as broken case
and exposed metal parts are found on the
instrument.
Do not rotate the Function Switch while the
●
test leads are being connected.
Do not install substitute parts or make any
●
modification to the instrument. For repair or
re-calibration, return the instrument to your
local distributor from where it was purchased.
Do not try to replace the batteries if the
●
surface of the instrument is wet.
Disconnect all the cords and cables from the
●
object under test and power off the instrument
before opening the Battery Cover for Battery
replacement.
symbol appears
Verify proper operation on a known source
●
before use or taking action as a result of the
indication of the instrument.
Use appropriate personal protective equipment
●
such as insulating gloves, Insulating boots, and
safety glasses.
Dimension
●
approx. 254(L) 82(W)
×
approx. 243(L) 77(W)
×
Weight : approx.: 300g @ KEW2040
●
: 310g @ KEW2055
Accessories
●
Test Leads
Battery
Instruction manual English, Japanese / 1pce
Carriyng Case

3-3. Function Keys

The " " mark shows available function at each Range.
●
KEW2055

DC Current Measurement (KEW2055 only)

HOLD SELECT ZERO
/ / ), REL ,
Ω Δ
ACA
●
ACV
●
" mark is displayed at
DCA
●
0.15V or less.
±
DCV
●
5 , relative humidity
℃
Ω ●
-
40 , relative humidity
℃
-
60 , relative humidity
∼ ℃

4. Preparation for measurement

4-1. Checking Battery Voltage
Set the Function Switch to any position other than
" " . When the display is clear without "
OFF
showing, battery voltage is enough. When the display
is blank or " " mark is indicated, replace the
BATT
batteries according to Section 7, Battery Replacement.
The Sleep feature automatically powers the
instrument off in about 15 min after the last
switch or key operation. Therefore, the display
may be blank even with the Function Switch set
to a position other than "
instrument in this case, turn the switch back to
the " " position, then to any other position,
OFF
or press any key. Replace the batteries if nothing
was displayed after above operations.
4-2. Checking Switch Setting & Operation
Confirm the Function Switch is set to the correct
position, the instrument is set to the correct
/ 5 sec
measurement mode,
and the Data hold function is disabled. Otherwise,
desired measurement cannot be made.
or more/ 1000V
Ω
）
Set the Function Switch to an appropriate
●
position before starting measurement.
Firmly insert the test leads.
●
Disconnect the test leads from the instrument
●
for current measurement.
Do not expose the instrument to the direct sun,
●
high temperature and humidity or dewfall.
Altitude 2000m or less. Appropriate operating
●
temperature is within 0
This instrument isn
●
away from dust and water.
Be sure to power off the instrument after use.
●
When the instrument will not be in use for a
long period, place it in storage after removing
the batteries.
DANGER
Use a cloth dipped in water or neutral
●
detergent for cleaning the instrument. Do not
use abrasives or solvents.
Measurement categories
To ensure safe operation of measuring instruments,
IEC61010 establishes safety standards for various
electrical environments, categorized as CAT.I 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.
: Secondary electrical circuits connected to an
CAT.Ⅰ
AC electrical outlet through a transformer or
similar device.
t
'
: Primary electrical circuits of equipment
CAT.Ⅱ
connected to an AC electrical outlet by a
power cord.
: Primary electrical circuits of the equipment
CAT.Ⅲ
WARNING
connected directly to the distribution panel,
and feeders from the distribution panel to
outlets.
: The circuit from the service drop to the
CAT.Ⅳ
service entrance, and to the power meter
and primary over current protection device
(distribution panel).
5. Measurement
36(D)mm / KEW2055

5-1. AC Current Measurement

×
36(D)mm / KEW2040
×
Never make measurement on a circuit in which
●
voltage over AC600V exists to avoid getting
electrical shock.
Model 7066 / 1 set
Transformer jaw tips are designed not to short
●
R03 UM-4 / 2pcs
（ ）
the circuit under test. If equipment under test
has exposed conductive parts, however, extra
Model 9094/ 1pcs
precaution should be taken to minimize the
possibility of shorting.
Do not make measurement with the Battery
●
Cover removed.
Disconnect the test leads from the instrument for
●
Hz/ MAX/
current measurement.
DUTY MIN
● ● ● ●
(1) Set the Function Switch to "
-
● ● ●
position. (on KEW2040, only "600A" is available)
-
● ● ● AC has been selected by default; press the SELECT
- - key, when DC has been selected, to change it to
● ●
AC. AC mark is displayed at the upper left on the
-
● ● ●
display. (KEW2055 only)
- - -
●
- - -
●
(2) Press the trigger to open the transformer jaws
and clamp them onto the one conductor under test,
then take the reading on the display. Pressing the
"
Hz/DUTY
sequence.
" mark,
BATT
Function requires 60A or more at AC600A
Hz/DUTY
CAUTION
Range and 350A or more at AC1000A range.
Max conductor size for KEW2040 is approx dia.
●
33mm and for KEW2055 is approx dia. 40mm.
" . To operate the
OFF
During current measurement, keep the trans
former jaws fully closed. Other wise, accurate
measurements cannot be taken.
5-2. DC Current Measurement (KEW2055 only)
Never make measurement on a circuit in which
●
voltage over DC600V exists to avoid getting
electrical shock.
Do not make measurement with the Battery
●
Cover removed.
(1) Set the Function Switch to "
position. AC has been selected by default; press
the SELECT key, when AC has been selected, to
change it to DC.
DC mark is displayed at the upper left on the
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CAUTION
and 40 .
℃ ℃
t dust & water proofed. Keep
'
(Over-voltage categories)
Transformer
DANGER
" or " "
600A 1000A
" Key switches the indication in following
AC Current ⇨ Hz ⇨ DUTY
CAUTION
DANGER
" or " "
600A 1000A