Kyoritsu 2431 Bedienungsanleitung PDF herunterladen

INSTRUCTION MANUAL

DIGITAL AC LEAKAGE CLAMP METER

Jaw Trigger

Range Switch

Data Hold Button

Transformer Jaws

Display

Frequency Selector Switch

KEW SNAP 2431

KEW SNAP

SERIES

INSTRUMENT LAYOUT

Barrier

１．SAFETY WARNINGS

This instrument has been designed and tested according to IEC

Publication 61010; Safety Requirements for Electronic Measuring

Apparatus.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.

*Read through and understand instructions contained in this

manual before starting using the instrument.

* Save and keep the manual handy to enable quick reference

whenever necessary.

* Be sure to use the instrument only in its intended applications

and to follow measurement procedures described in the

manual.

* Be sure to understand and follow all safety instructions

contained in the manual. Failure to follow the above

instructions cause injury, instrument damage and/or damage

to equipment under test.

The symbol indicated on the instrument means that the user must

refer to related parts in the manual for safe operation of the instrument.

Be sure to carefully read instructions following each symbol in this

manual.

is reserved for conditions and actions that are

likely to cause serious or fatal injury.

is reserved for conditions and actions that can

cause serious or fatal injury.

is reserved for conditions and actions that can

cause injury or property damage.

Following symbols are used on the instrument and in the instruction

manual. Attention should be paid to each symbol to ensure your safety.

Refer to the instructions in the manual.

This symbol is marked where the user must refer to the instruction

manual so as not to cause personal injury or instrument damage.

Indicates an 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.

Indicates AC (Alternating Current).

* Never make measurement on a circuit above 300V AC. The

instrument is designed for measurement on a low-voltage

circuit below 300V AC.

* Do not attempt to make measurement in an explosive

atmosphere

(

i.e. in the presence of flammable gasses or fumes,

vapor or dust

)

* The transformer jaws are made of metal and their tips are not

insulated. Be especially careful about the hazard of possible

shorting where equipment under test has exposed conductive

parts.

* Never attempt to use the instrument if the instrument or your

hand is wet.

* Do not exceed the maximum allowable input value of any

measurement range.

* Never open the battery compartment cover when making

measurement.

* Never try to make measurement if any abnormal conditions,

such as broken Transformer jaws or case is noted.

* 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 the instrument has

any structural abnormality such as cracked case and exposed

metal part.

* Do not install substitute parts or make any modification to the

instrument. Return the instrument to Kyoritsu or your

distributor for service and repair to ensure that safety features

are maintained.

* Always switch off the instrument before opening the battery

compartment cover for battery replacement.

* Make sure that the range switch is set to an appropriate

position before making measurement.

* Be sure to set the range switch to the OFF position after use.

When the instrument will not be in use for a long period of time,

place it in storage after removing the batteries.

* Do not expose the instrument to the direct sun, extreme

temperatures or dew fall.

Working voltage is specified according to each Measurement category,

which is defined in safety standards. It is to protect the user from transient

impulse, which presents in the circuit under test. Measurement categories

are defined as follows.

CATⅠ: Secondary electrical circuits connected to an AC electrical outlet

through a transformer or similar device.

CATⅡ: Primary electrical circuits of equipment connected to an AC

electrical outlet by a power cord.

CATⅢ: Primary electrical circuits of the equipment connected directly to

the switchboard, and feeders from the distribution panel to

outlets.

CATⅣ: The circuit from the service drop to the service entrance, and to

the power meter and primary over-current protection device

(switchboard).

Transformer

Interior wiring

Incoming wire

CAT.Ⅳ

CAT.Ⅰ

CAT.Ⅱ

CAT.Ⅲ

Socket

switchboard

Data Hold mode indicator

Unit of measured quantity

Low battery indicator

Frequency response of 50/60Hz

Frequency response of WIDE

２．FEATURES

* Digital clamp meter designed for measurement of AC leakage current.

* Tear-drop-shaped jaws for ease of use in crowded cable areas and

other tight places

* Data hold function to allow for easy readings in dimly light or hard-to-

read locations

* Filter function to remove harmonics generated by such equipment as

inverters

* Automatic power-off function to extend battery life

* Designed to CAT.Ⅲ 300V and pollution degree ２ specified by the

international safety standard,IEC 61010-1.

３．SPECIFICATIONS

Overrange Indication ：'1' flashes on the highest digit

Response Time ：Approx. 2 seconds

Sample Rate ：Twice per second

Location for use ：

Indoor use, Altitude up to 2000m

Data Hold ：For all ranges

Storage Temperature & Humidity ：−10-50℃, relative humidity up

to 75%（without condensation）

Operating Temperature & Humidity：0-40℃, relative humidity up to

85%（without condensation）

Ranges

20ｍA

200ｍA

200A

0∼19.99ｍA

0∼199.9ｍA

0∼100.0A

100.1∼

199.9A

Accuracy

Frequency Selector Switch

WIDE position 50/60 position

±2.0%rdg±4dgt（50/60Hz）

±5.0%rdg±6dgt（40∼400Hz）

±5.0%rdg±4dgt（50/60Hz）

±3.0%rdg±5dgt

（50/60Hz）

±5.0%rdg±5dgt

（50/60Hz）

Power Source ：Two LR-44 or SR-44 batteries

Current Consumption ：Approx. 5mA

Battery Life ：Approx. 15 hours in continuous

use

Auto Power Off ：Automatically turns off approx.

10 minutes after power-on.

Safety Standards ：IEC 61010-1 CAT.Ⅲ 300V

：IEC 61010-2-32

EMC Standards ：IEC 61326

Overload ：AC300A for one minute

Withstand Voltage ：3700V AC for 1 minute between

electrical circuit and housing

case

Conductor Size ：Approx. 24mm in diameter

Dimensions/ Weight ：149（L）×60（W）×26（D）mm

：Approx.120g（battery included）

Accessories ：Instruction Manual, Two LR-44

batteries Carrying Case

Options ：Model 8004, 8008（Multi-Tran）

４．OPERATlNG INSTRUCTIONS

−

* Never use the instrument on a circuit above 300V AC.

* The transformer jaws are made of metal and their tips are not

insulated. Be especially careful about the hazard of possible

shorting where equipment under test has exposed conductive

parts.

* Do not attempt to make measurement with the battery

compartment cover removed from the instrument.

* Keep your fingers and hands behind the barrier during

measurement.

* The transformer jaws, especially their tips, have been precisely

adjusted to obtain maximum accuracy. Take sufficient care to

avoid shock, vibration or excessive force when handling the

instrument.

* The transformer jaws do not fully close when a foreign

substance is stuck in the jaw tips or they do not properly

engage due to the excessive force applied. In such a case do

not release the jaw trigger suddenly or attempt to close the

transformer jaws by applying external force. Make sure that the

jaws close by themselves after removing the foreign substance

or making them free to move.

* The maximum size of a conductor to test is approx. 24 mm in

diameter. An accurate measurement cannot be made when the

transformer jaws are not fully closed on a conductor larger than

24mm.

* When measuring a large current, the transformer jaws may

buzz. This is not a fault nor affect the accuracy of the

instrument.

（1） Set the range switch to a desired range. (Make sure that current to

measure does not exceed the upper limit of the range.)

（2） For normal measurement(Fig.1), press the jaw trigger to open the

transformer jaws and clamp onto one conductor only. Earth

leakage current and small current that flow through a grounded

wire can also be measured by this method. It is recommended

that the conductor is placed at the center of the closed transformer

jaws.

（3）To measure out of balance leakage current（Fig.2）, clamp onto all

conductors except a grounded wire. The leakage current measured

will be indicated on the display.

In a 4-wire system, clamp onto

all 4 wires.

In a 3-wire system, clamp onto all

3 wires.

Three-phase, 3-wire systems

Single-phase, 2-wire systems

Fig. 1 Normal Measurement

Fig.2 Out-of-balance Leakage Current Measurement

1 2

Inhaltsverzeichnis

Seite 1 - KEW SNAP

INSTRUCTION MANUALDIGITAL AC LEAKAGE CLAMP METERJaw TriggerRange SwitchData Hold ButtonTransformer JawsDisplayFrequency Selector SwitchKEW SNAP 2431K

Seite 2 - ６．OPTIONAL ACCESORRIES

4−2 AC current to measure may have harmonics or high frequencycomponents generated by such equipment as inverters. To eliminatethese superimposed co

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