Instruction manual
FLEXIBLE CLAMP SENSOR
POWER CLAMP SENSOR Series
KEW 8133
1. Safety warnings
This clamp sensor has been designed and tested according to
IEC61010-1: Safety Requirements fo r Electronic Measuring
Apparatus, and delivere d in the best condition af ter pas sing quality
control tests. This instruction manual contains warnings and safety
rules which have to b e obser ved by the user to ensure safe operati on
of the clamp senso r and to maintain it in safe condition. Therefore,
read through the se operating instructions before starting to use the
clamp sensor.
# WARNING
● Read through and understand instructions contained in this
manual before starting to use the clamp sensor.
● Keep the manual at hand to enable quick reference whenever
necessary.
● The clamp sensor 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
follow the above instructions may cause injury, clamp sensor damage
and/or damage to equipment under test. KYORITSU is not liable for
any damage resulting from the mishandling of the clamp sensor.
The symbol # indic ated on the clamp sensor, means that the user
must refer to the related par ts in the manual fo r safe operation of the
clamp sensor. It is essential to read the instructions wherever the #
symbol appears in the manual.
# DANGER : is reser ved for c onditions and actions t hat are
likely to cause ser ious or fatal injury.
# WARNING : is reser ved for condit ions and actions that can
cause serious o r fatal injury.
# CAUTION : is reser ved for conditions and actions that can
cause injury or instrument damage.
# DANGER
● Do not make measurements on a circuit in which electri cal
potentials exceeding the following values exist: 300 V in CAT IV
environment and 6 00 V in CAT III or lower environment.
● Use the sensor only as specified; other wise, the protection
supplied by the sensor can be compromised and damage itself
or lead to a serious accident. Always verify the proper operation
on a well- known power source before starting to use the sensor.
Stop using the sensor if any visible damage suc h as crac ks on the
●
circuit box or clamp part, or exposed internal metal parts are
found.
● Do not disasse mble, install substitute part s or make any
modificati on to the c lamp sensor. Return the clamp sensor to
your local KYORITSU distributor for repair or re-calibration in
case of suspected faulty operation.
● Do not use the clamp sensor if the sensor or your hand is wet;
other wise, electr ical shock accident m ay occur.
● Comply with the local and national safety code and use the
protective gears to prevent shock hazard.
# WARNING
# CAUTION
● Do not step on o r pinch the cord; it may damage the jacket of
the cable.
● Do not expose the clamp sensor to direct sunlight, high
temperature, humidity or dew. It may cause defor matio n or
insulation degradation and cannot meet the original
specification.
● Not to give shocks, such as vibr ation or drop, which may
damage the clamp sensor, during transit or use.
● Use a damp cloth with wate r or neutral detergent for cleaning
the clam p sensor. Do not use abrasives or s olvents.
● This clamp sensor is not designed to be dust or waterproof. Do
not use it dusty places or where the c lamp sensor is like ly to be
wet. It can damage the sensor.
● Never pinch foreign matters or give vibrations to the joint part of
the clamp sensor ; other wise, the joint part may b e damage d
and lead to inaccurate measurements.
● Do not bend or pull the root of the cable to prevent breaks in the
cable.
● Never apply a current exceeding t he measuring range for a long
time. It may damage the clamp sensor.
● Do not connect /remove the connectors while the connected
devices are on or clamping onto the conductor under test.
Other wise, the connected device or c lamp sensor may be
damaged.
● Accurate measurement may not be obt ained in the vicinity of
strong magnetic fields such as transformers, high- current
circuits or wireless machines.
Meaning of symbols on the clamp sensor:
User must refer to the explanations in the instruction
#
manual for safety reasons.
Clamp sensor with double or reinforced insulation
Do not use for, attach to or detach from un -insulated
hazardous live conductors, which may render electric
shock, electric burn, or arc f lash.
AC
Crosse d-out wheel bin symbol (according to WEEE
Directive: 2002/ 96/ EC) indicating that this electrical
produc t may not be treated as househo ld waste, but that
it must be collected and treated separately.
Measurement Category:
To ensure safe operation of measur ing inst ruments, IEC 61010
establishes safety standards for various electrical environments,
catego rized as O to CAT IV, and called m easurement 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 (None, Other)
CAT II : Electrical circuits of equipment connected to an AC
CAT III : Primary electrical circuits of the equipment conne cted
CAT IV : Th e circuit from the service drop to the servic e
: Circuits which are n ot direc tly connected to the mains
power supply.
electrical outlet by a power cord.
directly to the distribution panel, and feeders from the
distribution panel to outlets.
entrance, and to the power meter and pr imar y overcurrent protec tion dev ice (distribution panel).
O: Device which is
not directly
connected to the
mains power supply
2. Features
●
This is a clamp sensor whic h can measure AC current up to 3000 A.
● Flexible and light weight is achieved by using air core c oil for the
sensor.
3. Clamp sensor layout
Cable
Circuit box
Power indicator
Output cable
Output terminal
Joint
Clamp sensor
4. Pin assignment for output terminal
Output signal
COM
Power supply (+V)
* Pin assignment at the connecting terminal of measuring instrument
is symmetrical to above figure.
● Output signal passes bet ween ③ an d ⑤ of output terminal.
● This clamp sensor drives power via the output cable. Power
supply of +3.0 to +5.5 V is required bet ween ① and ③ of output
terminal and -3.0 to -5.5V is required between ② and ③.
Sensor identification (110kΩ)
NC (Not connected)
Power supply (-V)
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.
12-17 92-2322
5. Specifications
Model name KEW 8133
Applicable models
Rated current 3000 A AC
Output voltage 500 mV AC/ 3000 A AC (0.167 mV/ A)
Measuring range 0 – 3000 A AC rms (5515 A Peak)
Accuracy
(sine wave input)
Phase characteristics
Current consumption
(at power supp ly ±5V )
Temp. & Hum. range
(guaranteed accuracy)
Operat ing Temp. &
Hum. range
Storage Temp. & Hum.
range
Max allowable input 3900 A AC (continuous)
Output impedance 100 Ω or less
Environmental condition Altitude up to 2000 m, In- door us e
Applicable standards
Withstand voltage
Insulation resistance
Measurable conductor size
Cable length
Output terminal MINI DIN 6PIN
Weight Approx. 200 g
Accessories
KEW 63 05 Power M eter
KEW 6315 Power Q ualit y Analy zer
±1.0%rdg±0.5mV (45 – 65 Hz)
±1.5%rdg±0.5mV (40 – 1 kHz)
±3.0%rdg±0.5mV (max): electromagnetic
*
environment on industrial site
45 – 65 Hz: within ±2°
40 – 1 kHz: within ±3°
2 mA (max)
23±5°C
Relative humidit y 85% or le ss
(no condensation)
-10 to 50°C
Relative humidit y 85% or le ss
(no condensation)
-20 to 60°C
Relative humidit y 85% or le ss
(no condensation)
IEC61010 -1
IEC61010 -2- 032
CAT III (600 V rms), CAT IV (300 V rms),
Pollution degree 2
IEC 61326-1 (EMC), EN505 81
5160 V AC rms (50/ 6 0 Hz)/ 5 sec.
Between circuit and clamp sensor
50 MΩ or more/ 10 00 V
Between circuit and clamp sensor
Ø 170 mm (max)
Approx. 2.7m: between c ircuit box and
clamp sensor
Approx. 0.2m: bet ween circuit b ox and
output terminal
Carrying bag (MODEL9095)
Instruction manual
Cable marker No.1 - No.3 (2pc s each)
6. Operating instructions
● Never make measurements on a circuit in which electrical
potentials exceeding the following values exist: 300 V in CAT IV
and 600 V in CAT III or lower environment.
● The measurable conductor size is 170mm in diameter (max).
Make sure that the clamp sensor is firmly closed fo r accur ate
measurement.
When disconnecting the output terminal from the measuring
●
instrument, do so by removing the plug and not by pulling the cable.
● This sensor has been specially designed an d dedic ated to our
Power meter KEW 63 05 and Power quality analyzer KE W 6315.
It cannot be used with the other our products such as KE W
5010/ 5020.
6-1 Measurement method
⑴ Connect the output terminal to the input terminal on th e
measuring instrument.
⑵ Power on the measuring instrument.
⑶ Unlock the Joint according to the following illustrations.
# DANGER
# CAUTION
Joint
Cable
Note
Clamp sensor
Lock
1. Press
2. Unlock
⑷ Clamp onto one c onductor to be tested. Loc ate the conductor as
shown below while obser ving the direction of the Guide arrow
mark - indicating the cur rent flowing directi on - marked on the
Joint of the sensor to synchronize th e phases of the cur rent under
test and of the output voltage.
Source
Reference position of
conductor to be tested
Position the conductor to be tested as illustrated above.
⑸ Ensure that the joint part of the clamp sensor is fir mly locked.
● J oint par t may be unlocked and disconnected if exces sive force
is applied to.
● Clamp onto just one conductor; measurements cannot be
made when clamping single-phase (2-wire) or three-phase
(3-wire) at the same t ime.
Load
Guide arrow mark
6-2 Connecting wi th KEW 6305/KEW 6 315
Before connecting this sensor wit h KEW 63 05 or KEW 6315,
confirm that the internal fir mware version is later than the one
listed in the following table; otherwise, this se nsor cannot be used
with. The latest f irmwar e is available on our website.
MODEL Firmware version
KEW 6305 V1.10 or later
KEW 6315 V1.50 or later
For the detailed set tings of the clamp sensor, please refe r to the
instruction manual for the applicable model.
7. Storage
Wind the c able of t he sensor as shown below and lock th e joint.
Wind the b lack cable in the same way and store them in the carrying
bag.
Carrying bag
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