Refer to the instructions in the manual.
Indicates instrument with double or reinforced insulation.
Indicates that this instrument can clamp on live bare
conductors when the voltage to be tested is below
Circuit - Ground-to-Earth voltage against the indicated
This instrument satisfies the marking requirement
defined in the WEEE Directive. This symbol indicates
separate collection for electrical and electronic
To ensure safe operation of measuring instruments, IEC 61010
establishes safety standards for various electrical environ-
ments, 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
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 t o the p ower met er and p rimary
overcurrent protection device (distribution panel).
● Never make measurement on a circuit in which the electrical
potential exceeds 300V in order to avoid possible shock
● Do not make measurement when thunder is rumbling. If the
instrument is in use, stop the measurement immediately and
remove the instrument from the measured object.
● 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.
● Put insulated protective gears when there is a danger of
● The transformer jaws are made of metal and their tips are not
completely insulated. Be especially careful about the possible
shorting where the measured object has exposed metal parts.
● Never attempt to use the instrument if it's surface or your
Otherwise, electrical shock accident may occur.
● Do not exceed the maximum allowable input of any measuring
● Never open the battery compartment cover and the instrument
case when making a measurement.
● The instrument is to be used only in its intended applications
or conditions. Otherwise, safety functions equipped with the
instrument doesn’t work, and instrument damage or serious
personal injury may be caused.
● Never attempt to make any measurement, if any abnormal
conditions are noted, such as broken case, and exposed
● Do not install substitute parts or make any modification to
the instrument. Return the instrument to your local Kyoritsu
distributor for repair or re-calibration in case of suspected
● Always keep your fingers and hands behind the barrier on the
instrument to avoid the possible shock hazard.
● Do not try to replace batteries if the surface of the instrument
Power off the instrument before opening the Battery
Compartment Cover for a battery replacement.
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
passing quality control tests.
This instruction manual contains warnings and safety rules which
have to be observed by the user to ensure safe operation of the
instrument and to maintain it in safe condition. Therefore, read
through these operating instructions before using the instrument.
● Read through and understand instructions contained in this
manual before using the instrument.
● Keep the manual at hand to enable quick reference whenever
● The instrument is to be used only in its intended applications.
● Understand and follow all the safety instructions contained in
It is essential that the above instructions are adhered to.
Failure to follow the above instructions may cause injury and or
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 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 minor injury or instrument damage.
● Do not step on or pinch the cord to prevent the jacket of cord
● The output connector shall be removed or connected without
clamping a conductor. Otherwise, it may cause a failure.
● Do not expose the instrument to direct sunlight, high
temperatures, humidity or dew.
● Do not use this instrument in dusty place and where the
instrument is likely to get wet.
● Power off the instrument after use. Remove the batteries if
the instrument is to be stored and will not be in use for a long
● Never give shocks, such as vibration or drop, which may
● Use a damp cloth and detergent for cleaning the instrument.
Do not use abrasives or solvents.
● Take sufficient care to avoid shock, vibration or excessive
force when handling the instrument. Otherwise, precisely
adjusted transformer jaws will be damaged.
● When transformer jaws do not fully close, never try to close
them by force, but make them free to move and try again. If a
foreign substance is stuck in the jaw tips, remove it.
● Do not open the jaws by force when transformer jaws are
● Hold the inserting part (except for the cord) and disconnect
the Output Connector from the measuring instrument so as
not to cause a break in the cable.
● Clamp sensor for AC/DC current measurements
● Designed to meet the international safety standard
IEC61010-2-032 CAT.III 300V, Pollution degree 2
One press of the Power Switch powers on the instrument and the
green LED lights up. Another press of the Power Switch powers
off the instrument. The instrument is automatically powered off
in about 20 min after the last switch operation. (Auto-power-off
<To disable the Auto-power-off Function>
Keep the Power Switch pressed down at least 3 sec and power
on the instrument. Then the red LED lights up and the Auto-
power-off Function doesn’t activate when 20 min pass after the
Output voltage AC/DC 10mV/A
Temperature & humidity range
23±5ºC, relative humidity 85% or less
-10 55 ºC , relative humidity 85% or less 〜
-30 70 ºC , relative humidity 85% or less 〜
(Accuracy at 23±5℃×±0.1%rdg)/℃ should be added.
(Temperature ranges: -10 to 18℃ and 28 to 55℃)
Output impedance Approx 10Ω or less
Location for use Altitude 2000m or less, indoor use
IEC 61010-1 CAT. III 300V, Pollution degree 2
IEC 61326-1(EMC), EN50581(RoHS)
AC3470V (RMS 50/60Hz) for 5 sec
between Jaw and enclosure
between enclosure and output terminal
between Jaw and output terminal
between Jaw and enclosure
between enclosure and output terminal
between Jaw and output terminal
Power source DC3V (size AAA alkaline battery LR03×2pcs)
Approx 20 min after powering on the instrument
Current consumption 25mA or less (battery voltage 3V)
Continuous use Approx 40 hours
Dimension 127(L)×42(W)×22(D)mm
Accessories Instruction manual, battery, Soft case
(*1) Under the EMC environment, the instrument temporally
reads errors due to the influences of electrical magnetic
fields (about 15mV at 3V/m). Declared accuracy is
guaranteed when a conductor under test is at the center of
(*2) This instrument doesn’t have Zero Adjustment Function.
This accuracy is defined after a zero-adjustment by using
the device connected with this instrument. It is advisable to
do Zero adjustment before making measurements because
zero value may vary due to temperature change.
(*4) powers off automatically at 1.9±0.2V or less
Instrument works properly even while Low battery indicator
(1) Press the Power Switch to power on the instrument. The
green LED lights up. (*5)
(2) Connect the output terminal to the input terminal of the
(3) Press the trigger to open the transformer jaws, and clamp
Confirm that the tips of the transformer jaws are surely closed.
(5) Start a measurement. The measured conductor should be at
the center of the jaws. (*6)
(6) The measured result is displayed on the connected
(*5) Keep the Power Switch pressed down at least 3 sec and
power on the instrument to disable the Auto-power-off
Function. In this case, the red LED lights up after powering
(*6) Triangle marks on the Transformer Jows showing the center
* Currents flowing from the top side (side with the Power
switch) to the bottom side (Battery Compartment Cover) are
positive, the ones flowing from the bottom side to the top side
* Max conductor size for KEW8115 is max φ12mm. Accurate
measurements cannot be taken on conductors thicker than
above size since the transformer jaws don’t fully close.
Do not give big shocks, when opening / closing tranformer jaws.
Replace the batteries when a low batter indicator (red LED)
(1) Press the Power Switch and power off the instrument.
(2) Loosen 1 screw at the bottom side of the instrument to
remove the Battery Compartment Cover.
(3) Replace the batteries with new ones.
(size AAA alkaline battery : LR03×2 pcs)
(4) Install the Battery Compartment Cover and tighten the
● Do not try to replace batteries when making a measurement
to avoid electric shock hazard.
● Do not mix batteries of different types or new batteries with
● Make sure to install batteries in correct polarity as indicated in
Red Light : no Auto-power-off Function
Red Flash : Low battery warning
Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.
Battery Compartment Cover
