Hioki 3283-20 User manual

EN
3283-20
CLAMP ON LEAK HiTESTER
Instruction Manual
June 2015 Edition 1
3283C981-00 15-06H

i
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

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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

1
Introduction
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

2
Safety Information
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.

3
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.

4
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

5
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.

6
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