Kyoritsu KEW 8121 Handleiding

Kyoritsu Meetapparatuur KEW 8121

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1. 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 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.

# WARNING

● Read through and understand 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.

The operating instructions described in the manual must be

observed.

● 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 and or instrument

damage.

Kyoritsu is by no means liable for any damage resulting from the

instrument in contradiction to this cautionary note.

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.

INSTRUCTION MANUAL

CLAMP SENSOR Series

KEW 8121/8122/8123

CLAMP SENSOR

# DANGER

● Never make measurement on a circuit in which the electrical

potential exceeds AC300V when using KEW 8121 and AC600V

using KEW 8122 and 8123.

● Do not make measurement w hen t hunder rumbling. If the

instrument is in use, stop the measurement immediately and

remove the instrument from the equipment under test.

● 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.

● Use insulated protective gears, such as insulated gloves, for your

safety when possible electric shock hazards are concerned.

● 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 use these sensors when their surface or your hand is wet.

Do not wet the output connectors because they aren t dust/ water-

proof.

●

Do not exceed the maximum allowable input of any measuring range.

Keep y our f i ngers and hands behind t h e barrier d u ring a

measurement.

# WARNING

● Never attempt to make any measurement, if any abnormal

conditions are noted, such as broken case, and exposed metal

parts.

● 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 faulty operation.

● Always keep your fingers and hands behind the barrier on the

instrument to avoid the possible shock hazard.

# CAUTION

● Do not step on or pinch the cord to prevent the jacket of cord from

being damaged.

● 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.

● Never give shocks, such as vibration or drop, which may damage

the instrument.

● Use a damp cloth and mild detergent for cleaning the instrument.

Do not use abrasives or solvents.

Safety symbols

#Refer to the instructions in the manual.

Indicates instruments 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 Measurement Category.

Indicates AC

○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.

O : Circuits which are not directly connected to the mains power

supply.

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

to the power meter and primary over-current protection device

(distribution panel).

2. Features

● Clamp sensor for recording apparatus

● Designed to international safety standard IEC 61010-2-032 (Pollution

Degree 2)

KEW 8121 CAT.III 300V

KEW 8122 /8123 CAT.III 600V

3. Instrument layout

Barrier：It is a part providing protection against electrical shock and

ensuring the minimum required air and creepage distances.

4. DIN plug pin assignment

3: GND pin

5: Output signal pin

6: Sensor Signal pin

（Resistance between 3Pin and 6Pin:

8121:62k 8122:11k 8123:24kΩ Ω Ω）

1, 2 and 4: No use

* Lower figure shows the pin assignment seeing the Clamp sensor from output

connector part. The figure of the pin assignment of connection terminal is

symmetrical to lower figure.

KEW 8121 KEW 8122 KEW 8123

Transform Jaws Barrier Trigger Cable Output connector

Conductor

6. Specifications

Model KEW 8121 KEW 8122 KEW 8123

Rated current AC100Arms(141Apeak) AC500Arms(707Apeak) AC1000Arms(1414Apeak)

Output voltage AC0 ~ 500mV

(AC500mV/AC100A):5mV/A

AC0 ~ 500mV

(AC500mV/AC500A):1mV/A

AC0 ~ 500mV

(AC500mV/AC1000A):0.5mV/A

Measuring range AC0 ~ 100A AC0 ~ 500A AC0 ~ 1000A

Accuracy

(Input: sine wave) ±2.0%rdg±0.3mV(50/60Hz)

±3.0%rdg±0.5mV(40 ~ 1kHz) ±2.0%rdg±0.3mV(50/60Hz)

±3.0%rdg±0.5mV(40 ~ 1kHz)

Temperature &

humidity range

(Guaranteed

accuracy)

23±5ºC, relative humidity: 85% or less (no condensation)

Operating

temperature range 0 ~ 40ºC, relative humidity: 85% or less (no condensation)

Storage temperature

range -20 ~ 60ºC, relative humidity: 85% or less (no condensation)

Maximum

permissible input AC100Arms continuous(50/60Hz) AC500Arms continuous (50/60Hz) AC1000Arms continuous (50/60Hz)

Output impedance Approx. 9.5 Approx. 1.9 Approx. 1.5Ω Ω Ω

Location for use Altitude up to 2000m, Indoors

Applicable standards

IEC 61010-1, IEC 61010-2-032

Measurement CAT III (300Vrms)

Pollution degree 2

IEC 61326-1(EMC)

IEC 61010-1, IEC 61010-2-032

Measurement CAT III (600Vrms) Pollution degree 2

IEC 61326-1(EMC)

Environmental standards

EU RoHS Directive compliant

Withstand voltage

AC3470Vrms (50/60Hz)for 5 sec.

between Jaw and enclosure

between enclosure and output connector

between Jaw and output connector

AC5160Vrms (50/60Hz)for 5 sec.

between Jaw and enclosure

between enclosure and output connector

between Jaw and output connector

Insulation resistance

50M or greater at 1000VΩ

between Jaw and enclosure

between enclosure and output connector

between Jaw and output connector

Conductor Size Approx.24mm in diameter (max.) Approx.40mm in diameter (max.) Approx.55mm in diameter (max.)

Dimension 97(L)×59(W)×26(D)mm 128(L)×81(W)×36(D)mm 170(L)×105(W)×48(D)mm

Cable length Approx. 2m

Output connector MINI DIN 6PIN

Weight Approx. 150g Approx. 260g Approx. 360g

Accessories Instruction manual

Cable marker

Option MODEL 7146 (Banana A4 adjuster plug)Φ

MODEL 7147 (Extension Cable)

DISTRIBUTOR

Kyoritsu reserves the rights to change specifications or designs

described in this manual without notice and without obligations.

5. Operating instructions

# DANGER

● Never make measurement on a circuit in which the electrical

potential exceeds AC300V when using KEW 8121 and AC600V

using KEW 8122 and 8123 in order to avoid possible shock hazard.

● 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.

# CAUTION

● 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 force to open the Transformer jaws when they are frozen.

● When making current measurements, keep the transformer jaws

fully closed.

Otherwise, accurate measurements cannot be taken.

Maximum conductor size is as follows.

KEW 8121 : 24mm in diameter

KEW 8122 : 40mm in diameter

KEW 8123 : 55mm in diameter

● Hold the inserting part (except for the cable) and disconnect the

Output connector from the measuring instrument so as not to

cause a break in the cord.

Measurement procedures

(1) Connect the Output connector to the Input terminal of the

measuring instrument.

(2) Press the Trigger to open the transformer jaws and clamp onto one

conductor.

Clamped c onductor should be at the center of the closed

transformer jaws.

(3) Ensure that the tips of transformer jaws are firmly closed.

KYORITSU ELECTRICAL INSTRUMENTS

WORKS, LTD.

3-22 92-1897D

Incoming wire

Ｏ:Device which is

not directly

connected to the

mains power supply

Socket

Interior wiring

Product specificaties

Merk:	Kyoritsu
Categorie:	Meetapparatuur
Model:	KEW 8121

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