Hioki 3283-20 Manuale utente

3283-20

CLAMP ON LEAK HiTESTER

Instruction Manual

June 2015 Edition 1

3283C981-00 15-06H

Contents

Introduction.........................................................................1

Checking Package Contents.............................................1

Safety Information..............................................................2

Operating Precautions.......................................................7

1 Overview 11

1.1 Overview and Features.................................11

1.2 Parts and Functions......................................13

1.3 Liquid Crystal Display ..................................15

2 Pre-measurement Preparation 19

2.1 Flow of Measurement ...................................19

2.2 Installing/Replacing the Battery ..................20

2.3 Inspection Prior to Use.................................23

2.4 Attaching the Hand Strap.............................24

3 Performing Measurements 25

3.1 Measuring Leakage Current.........................25

Locating an insulation failure....................................28

Selecting the measurement range............................29

Setting a slower display update rate (SLOW)...........30

Setting a faster display update rate (FAST)..............30

Measuring an intensely uctuating load current .......31

Obtaining bar graph displays (BAR GRAPH) ...........32

Displaying the frequency (Hz)...................................33

Measuring load current.............................................34

3.2 Reducing Noise

(Filter Function – FILTER).............................35

3.3 Hold Data (Data Hold Function – HOLD).....36

3283C981-00

Contents

3.4 Checking Maximum, Minimum and

Average Values

(Recording Function –

REC)...................................................................37

Bar graph displays (BAR GRAPH) ...........................39

3.5 Limiting Battery's Power Consumption

(Auto power-off function – APS)..................41

3.6 Disabling the Buzzer.....................................42

4 Specications 43

4.1 MeasurementSpecications........................43

AC current: Amperes rms (display of true rms).........44

Frequency Hz ..........................................................45

4.2 GeneralSpecications .................................45

5 Maintenance and Servicing 49

5.1 Repair, Inspection and Cleaning..................49

5.2 Troubleshooting............................................51

5.3 Error Displays................................................52

5.4 Message Displays .........................................52

Introduction

Thank you for choosing the Hioki 3283-20 Clamp On Leak HiTester.

To ensure that your instrument performs as designed over the long

term, please handle this instruction manual carefully and keep it

handy for future reference.

Checking Package Contents

Once you have received the instrument, verify that it has not suffered

any damage during shipment before using it. If you discover any

damage or nd that the instrument does not operate as stipulated in

its specications, please contact your authorized Hioki distributor or

reseller.

Verify that the packaging includes all contents.

3283-20 9399 Carrying Case Hand Strap

6LR61 Alkaline Battery

× 1 Instruction Manual

Safety Information

The 3283-20 has been designed and tested in accordance with the

IEC 61010 safety standard and shipped in a safe state. However,

failure to adhere to the precautionary information and follow the

instructions provided in this manual may render safety-related

functionality provided by the instrument inoperable.

Before using the instrument, be sure to carefully read the following

safety information.

DANGER

Improper use of the instrument may result in bodily

injury or equipment damage. Read this instruction

manual carefully and ensure that you understand its

contents before operating the instrument.

WARNING

Electricity poses a number of hazards, including electric

shock, overheating, fire, and arc discharge (caused

by a short). Individuals using an electrical measuring

instrument for the first time should be supervised

by a technician who has experience in electrical

measurement.

Protective gear

WARNING

To avoid electric shock when measuring live lines,

wear appropriate protective insulation gear and

adhere to applicable laws and regulations.

Safety Information

Safety-related notations

This manual classifies safety information on the basis of the

severity of the associated risk and hazard level using the following

categories.

DANGER Indicates an imminent hazard that could lead to serious

injury or death.

WARNING Indicates a hazard that could lead to serious injury or

death.

CAUTION Indicates a hazard that could lead to minor injury or

that could be expected to result in equipment or other

damage.

IMPORTANT Indicates information or content that is especially

important to keep in mind when operating the instrument

or performing maintenance work.

Indicates a high-voltage hazard.

Warns that failure to verify safety or improper use of the

instrument could lead to electric shock, burns, or death.

Indicates an action that you must refrain from performing.

Indicates an action that you must perform.

*Indicates that there is additional information below.

Safety Information

Symbols displayed on the instrument

Indicates the need for caution or a hazard.

When this symbol is displayed on the instrument, refer to the

corresponding section of the instruction manual.

Indicates AC (Alternating Current).

Indicates DC (Direct Current).

Indicates that the instrument may be connected to or

disconnected

from a live circuit.

Indicates a double/reinforced-insulated device.

Symbols related to standards

Indicates the Waste Electrical and Electronic Equipment

Directive (WEEE Directive) in EU member states.

Indicates that the product conforms to regulations set out by the

EC Directive.

Screen display

This instrument uses the following screen displays.

1 2 3 4 5 6 7 8 9 0

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Safety Information

A different display is used in the case below.

Over-range indication (p. 17).

Other notations

HOLD

（Bold）Bold text is used to indicate language used on keys and other

controls.

[ ]Language from the screen is enclosed in brackets ([ ]).

Accuracy

We dene measurement tolerances in terms of rdg. (reading) and

dgt. (digit) values, with the following meanings:

rdg.(Reading or displayed value)

The value currently being measured and indicated on the

measuring instrument.

dgt.

(Resolution)

The smallest displayable unit on a digital measuring instrument,

i.e., the input value that causes the digital display to show a “1”

as the least-signicant digit.

Safety Information

Measurement categories

To ensure safe operation of measurement instruments, IEC 61010

establishes safety standards for various electrical environments,

categorized as CAT II to CAT IV, and called measurement

categories.

DANGER

•Never use a measuring instrument whose measurement

category is lower than the location in which it will be

used. Doing so may result in a serious accident.

•Never use a measuring instrument with no category

labeling in a CAT II to CAT IV measurement category.

Doing so may result in a serious accident.

The 3283-20 conforms to the safety requirements for CAT III (300 V)

measuring instruments.

CATⅡ：

When directly measuring the electrical outlet receptacles

of the primary electrical circuits in equipment connected

to an AC electrical outlet by a power cord (portable tools,

household appliances, etc.)

CAT Ⅲ：

When measuirng the primary electrical circuits of heavy

eqiupment (fixed installations) connected directly to the

distribution panel, and feeders from the distribution panel

to outlets

CAT Ⅳ：

When measuring the circuit from the service drop to the

service entrance, and to the power meter and primary

overcurrent protection device (distribution panel)

T Outlet

CAT II

Internal wiring

Distribution panel

Service entrance

Service drop

CAT IV

Power meter

CAT III

Fixed installation

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