KYORITSU KEW2040 Instruction Manual

INSTRUCTION MANUAL
DIGITAL CLAMP METER
KEW SNAP
SERIES
KEW2040 600A AC Only Type
KEW2055 1000A AC/DC Type
Barrier
Barrier It is a part providing protection against
：
electrical shock and ensuring the minimum
required air and creepage distances.

3. Specification

3-1. Measuring range & accuracy
(accuracy guaranteed at 23 5 .humidity 45 85%)
℃ ± ℃ ∼
AC Current 600A, 1000A Function
Accuracy
Measuring
Function
Range
KEW2040 KEW2055
1.5%rdg 5dgt
± ±
1.5%rdg 5dgt
± ±
(50/60Hz)
600A 0-600.0A
(50/60Hz)
3.5%rdg 8dgt
± ±
3.5%rdg 8dgt
± ±
(40-400Hz)
(40-400Hz)
1000A 0-1000A N/A
DC Current 600A, 1000A Function
Accuracy
Measuring
Function
Range KEW2040 KEW2055
600A 0-600.0A N/A
1.5%rdg 5dgt
± ±
1000A 0-1000A N/A
AC Voltage Function
Auto-ranging, Input impedance: approx. 10M
（ Ω）
Accuracy
Measuring
Range
Range KEW2040 KEW2055
1.3%rdg 4dgt (50/60Hz)
± ±
6/60/600V 1-600.0V
3.0%rdg 5dgt (40 400Hz)
± ± ∼
DC Voltage Function
Auto-ranging, Input impedance: approx. 10M
（ Ω）
Accuracy
Measuring
Range
Range
KEW2040 KEW2055
600mV/6/
0-600.0V 1.0%rdg 3dgt
± ±
60/600V
Resistance Continuity/Diode Check Function
（ ）
Accuracy
Measuring
Range
Range KEW2040 KEW2055
600 /6k/
Ω
60k/600k 0-6M 1.0%rdg 5dgt
Ω Ω ± ±
6M
Ω
6.00M-
60M 5%rdg 8dgt
Ω ± ±
60.00M
Ω
Cont Buzzer 0-600.0 Threshold value : 60 30
Ω Ω± Ω
Diode Test voltage: 0-2V
Frequency/ DUTY Function Auto-ranging for
（
Frequency
）
Accuracy
Measuring
Range
Range KEW2040 KEW2055
ACA 40Hz 400Hz
−
0.5%rdg 5dgt
± ±
ACV 1Hz 10kHz
∼
0.1-99.9%
2.5%rdg 5dgt
± ±
(Pulse width/Pulse period)
Note: Measurable inputs are: 40Vrms@ACV or
60Arms@AC600A, 350A@AC1000A Range
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 Function for wiring
● （ ）
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
symbol appears
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
Display : max. 6039 counts
●
(Frequency: 9999) & Bar graph
Over-range indication : "OL" displayed when exceeding
●
the measuring range. (except for AC/DCV and 1000A
Function)
Range switching :
●
Auto-ranging / Voltage, Resistance Range
Single range / Continuity, Diode check and DUTY
Sample rate : three times per second
●
Functional construction :
●
OFF/ACA/ACV/DCV/ KEW2040
Ω
OFF/ACA/DCA/ACV/DCV/ KEW2055
Ω
Keys :
●
SELECT(AC/DC switching & / / / ), REL ,
Ω Δ
Hz/DUTY, MIN/MAX, HOLD/ Back Light (KEW2055)
Power source : DC3V/ R03(UM-4) x 2pcs
●
Low battery warning : " " mark is displayed at
●
2.4V 0.15V or less.
±
Temperature & humidity : 23 5 , relative humidity
● ℃ ± ℃
accuracy guaranteed 85% or less (no condensation)
Operating temperature :0 40 , relative humidity
● ∼ ℃
& humidity range 85% or less (no condensation)
Storage temperature : -20 60 , relative humidity
● ∼ ℃
& humidity range 85% or less (no condensation)
Current consumption : approx. 12 mA
●
Sleep Function : Automatically powered off in about
●
15 min after the last Function switch operation.
Press any key or rotate the Function Switch from
OFF to any position to exit from the Sleep state.
Location for use
●
Outdoor use, Altitude up to 2000m
Applicable Standards
●
IEC 61010-1, 61010-2-033
Measurement CAT. IV 600V Pollution degree 2
IEC 61010-031, IEC 61010-2-032
EMC EN 61326-1
：
EN 55022
・
EN 61000-4-2 (performance criterion B)
・
EN 61000-4-3 (performance criterion B)
・
RoHS EN 50581
● ：
Overload Protection
●
Current Range : 720A AC/ 10 sec @KEW2040
1200A AC/DC/ 10 sec @KEW2055
Voltage Range : 720V AC/DC/ 10sec
Resistance Range : 600V AC/DC/ 10sec
Withstand Voltage
●
6720V AC TRMS 50/60Hz / 5 sec
（ ）
(between Jaws and electrical circuit/ between internal
circuit and enclosure)
Insulation Resistance : 10M or more/ 1000V
● Ω
between electrical circuit and enclosure
（ ）
Conductor size
●
KEW2040: approx. 33mm
KEW2055: approx. 40mm
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
DANGER
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.
WARNING
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.
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) 36(D)mm / KEW2055
× ×
approx. 243(L) 77(W) 36(D)mm / KEW2040
× ×
Weight : approx.: 300g @ KEW2040
●
: 310g @ KEW2055
Accessories
●
Test Leads Model 7066A / 1 set
Battery R03 UM-4 / 2pcs
（ ）
Instruction manual English, Japanese / 1pce
Carriyng Case Model 9094/ 1pcs

3-3. Function Keys

The " " mark shows available function at each Range.
●
DC Current Measurement (KEW2055 only)
Hz/ MAX/
HOLD SELECT ZERO
DUTY MIN
ACA
● ● ● ● ●
ACV -
● ● ● ●
DCA -
● ● ● ●
DCV - -
● ● ●
-
Ω ● ● ● ●
- - - -
●
- - - -
●

4. Preparation for measurement

4-1. Checking Battery Voltage

Set the Function Switch to any position other than
" " . When the display is clear without " " mark,
OFF BATT
showing, battery voltage is enough. When the display
is blank or " " mark is indicated, replace the
BATT
batteries according to Section 7, Battery Replacement.
CAUTION
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 " " . To operate the
OFF
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
measurement mode,
and the Data hold function is disabled. Otherwise,
desired measurement cannot be made.
CAUTION
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 and 40 .
℃ ℃
This instrument isn t dust & water proofed. Keep
● '
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.
Use a cloth dipped in water or neutral
●
detergent for cleaning the instrument. Do not
use abrasives or solvents.
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.
: Circuits which are not directly connected
O
to the mains power supply.
: Electrical circuits of equipment connected
CAT II
to an AC electrical outlet by a power cord.
t
: Primary electrical circuits of the
CAT III
equipment 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).
O: Device which is
not directly
connected to the
mains power supply

5. Measurement

5-1. AC Current Measurement

DANGER
Never make measurement on a circuit in which
●
voltage over AC600V exists to avoid getting
electrical shock.
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.
Do not make measurement with the Battery
●
Cover removed.
Disconnect the test leads from the instrument for
●
current measurement.
(1) Set the Function Switch to "
600A
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 "
" Key switches the indication in following
DUTY
sequence.
AC Current ⇨ Hz ⇨ DUTY
Function requires 60A or more at AC600A
Hz/DUTY
Range and 350A or more at AC1000A range.
CAUTION
Max conductor size for KEW2040 is approx dia.
●
33mm and for KEW2055 is approx dia. 40mm.
During current measurement, keep the trans
former jaws fully closed. Other wise, accurate
measurements cannot be taken.
Keep your fingers and hands behind the barrier
●
during measurement.

5-2. DC Current Measurement (KEW2055 only)

DANGER
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 "
600A
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
" or " "
1000A
Hz/
" or " "
1000A