Hioki 3283 Instruction Manual

3283

CLAMP ON

LEAK HiTESTER

INSTRUCTION MANUAL

i

Contents

Introduction 1
Inspection

1

Safety Notes

2

Notes on Use

5

Chapter Summary

11

Chapter 1 Product Outline

13

1.1 Product Outline

13

1.2 Features

13

1.3 Parts and Functions

16

Chapter 2 Measurement Procedure

19

2.1 Preparations

19

2.2 Leak Current Measurement

A

20

2.3 Filter Function FILTER

27

2.4 Data Hold Function

HOLD

28

2.5 Recording Function REC

28

2.6 Auto Power-Off Function

APS

33

2.7 Battery Low Warning

33

2.8 Beep Tone

33

2.9 Fast Mode

34

2.10 Output Function OUTPUT

35

Chapter 3 Battery Replacement

39

Chapter 4 Attaching the Hand Strap

41

Chapter 5 Specifications

43

5.1 Measurement Specifications

43

5.1.1 AC current Arms(true rms indication)

44

5.1.2 Frequency Hz

45

5.2 General Specifications

46

Chapter 6 Troubleshooting

51

Chapter 7 Service

55

ii

1

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Introduction

Inspection

Thank you for purchasing the HIOKI "3283
CLAMP ON LEAK HiTESTER." To obtain
maximum performance from the product,
please read this manual first, and keep it
handy for future reference.
We have tried to bring this manual as close
to perfection as we could achieve. If
perchance you find any unclear portions,
mistakes, omissions, or the like, we would be
most obliged if you could please notify us of
them via any HIOKI agent, or directly.

When you receive the product, inspect it
carefully to ensure that no damage occurred
during shipping. In particular, check the
accessories, panel switches, keys, and
terminals. If damage is evident, or if it fails to
operate according to the specifications, contact
your dealer or HIOKI representative.

Accessories

9399 Carrying Case 1
Hand Strap 1
Battery: 6F22(006P) 1
Instruction manual 1

Options

9094 OUTPUT CORD
9445-02 AC ADAPTER

(SA10-0910N, SINO-AMERICAN)

9445-03 AC ADAPTER (EU)

(SA10-0910G, SINO-AMERICAN)

2

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DANGER

This product is designed to conform to IEC
61010 Safety Standards, and has been
thoroughly tested for safety prior to shipment.
However, mishandling during use could result
in injury or death, as well as damage to the
product. Be certain that you understand the
instructions and precautions in the manual
before use. We disclaim any responsibility for
accidents or injuries not resulting directly from
product defects.

Safety Notes

This manual contains information and warnings
essential for safe operation of the product and
for maintaining it in safe operating condition.
Before using the product, be sure to carefully
read the following safety notes.

3

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The symbol printed on the product
indicates that the user should refer to a
corresponding topic in the manual (marked
with the symbol) before using the
relevant function.
In the manual, the symbol indicates
particularly important information that the
user should read before using the product.

Indicates AC (Alternating Current).

Indicates DC (Direct Current).

Indicates a double-insulated device.

Wear appropriate protective insulation
(insulating rubber gloves and boots, helmet
and etc.) when connecting and disconnecting
from live electric circuits.

DANGER

Indicates that incorrect operation presents an
extreme hazard that could result in serious
injury or death to the user.

WARNING

Indicates that incorrect operation presents a
significant hazard that could result in serious
injury or death to the user.

CAUTION

Indicates that incorrect operation presents a
possibility of injury to the user or damage to
the product.

NOTE

Advisory items related to performance or
correct operation of the product.

Safety symbols

The following symbols in this manual indicate
the relative importance of cautions and
warnings.

4

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CAT I Secondary electrical circuits connected to an AC

electrical outlet through a transformer or similar
device.

CAT II Primary electrical circuits in equipment connected to

an AC electrical outlet by a power cord (portable tools,
household appliances, etc.)

CAT III Primary electrical circuits of heavy equipment (fixed

installations) 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
overcurrent protection device (distribution panel).

Measurement categories
(Overvoltage categories)

This product complies with CAT III safety
requirements.
To ensure safe operation of measurement
product, IEC 61010 establishes safety
standards for various electrical environments,
categorized as CAT I to CAT IV, and called
measurement categories. These are defined as
follows.

Higher-numbered categories correspond to
electrical environments with greater momentary
energy. So a measurement device designed for
CAT III environments can endure greater
momentary energy than a device designed for
CAT II.
Using a measurement product in an
environment designated with a higher-numbered
category than that for which the product is rated
could result in a severe accident, and must be
carefully avoided.
Never use a CAT I measuring product in CAT
II, III, or IV environments.
The measurement categories comply with the
Overvoltage Categories of the IEC60664
Standards.

5

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_____________________________________________

DANGER

Before using the product the first time, verify
that it operates normally to ensure that the no
damage occurred during storage or shipping. If
you find any damage, contact your dealer or
Hioki representative.
When conductors being measured carry in
excess of the safe voltage level (SELV-E)

and
not more than 300 V, to prevent short circuits
and electric shock while the clamp sensor jaw
is open, make sure that conductors to be
measured are insulated with material
conforming to (1) Overvoltage Category

Ⅲ

,(2)

Pollution Degree 2

, and (3) Basic Insulation
Requirements for Working Voltages of 300 V.
Refer to the following standards regarding the
meanings of underlined terms.

IEC61010-1
IEC61010-2-031
IEC61010-2-032

Notes on Use

Follow these precautions to ensure safe
operation and to obtain the full benefits of the
various functions.

6

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DANGER

Do not use clamp testers on bare conductors.
When the clamp sensor jaw is open, there is a
risk of short-circuits and accidents that could
result in injury or death.
Use clamp testers only on power lines up to AC
300 V rms, to avoid short-circuits and accidents
that could result in injury or death.
This product should only be connected to the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the
primary side of a breaker, because unrestricted
current flow could cause a serious accident if a
short circuit occurs.
Use only the specified Model 9445-02 (SA10­0910N, SINO-AMERICAN) or 9445-03 (for EU)
(SA10-0910G, SINO-AMERICAN). AC adapter
input voltage range is 100 to 240 V AC (with
10% stability) at 50/60 Hz. To avoid electrical
hazards and damage to the product, do not
apply voltage outside of this range.

7

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WARNING

To avoid electric shock, do not allow the
product to get wet, and do not use it when your
hands are wet.
To avoid electric shock when measuring live
lines, wear appropriate protective gear, such as
insulated rubber gloves, boots and a safety
helmet.
To avoid electric shock when measuring the
ground conductor on a transformer Class 2
connection site, be careful not to approach high
voltage devices or conductors. Also, if close to
high voltage charging devices or if
measurement is otherwise difficult, first change
the route of the grounding wire.
To avoid electric shock when replacing the
batteries, first disconnect the clamp portion
from the object to be measured. Also, before
using the product after replacing the batteries,
replace the cover and screw.
When replacing the batteries, be sure to insert
them with the correct polarity. Otherwise, poor
performance or damage from battery leakage
could result.
To avoid the possibility of explosion, do not
short circuit, disassemble or incinerate
batteries.
Handle and dispose of batteries in accordance
with local regulations.

8

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CAUTION

This is a precision instrument: do not clamp any
foreign objects in the end of the clamp sensor, or
insert anything in the clamp sensor gap.
To avoid damage to the product, protect it from
vibration or shock during transport and handling,
and be especially careful to avoid dropping. Do not
exert excessive pressure on the clamp sensor or
attempt to wedge the sensor into a tight spot for
measurement.
To avoid damage to the product, do not exceed the
maximum input current rating, which depends on
the frequency of the current being measured (see
following Figure).

Frequency [Hz]

Fre

q

uency-dependent deletion characteristics

C

u

r

r

e

n

t

[

A

]

9

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CAUTION

Do not use the unit if the battery is exhausted
(when the mark lights in the display area). Be
sure to replace the exhausted battery with a new
one.
When replacing the battery, make sure that the
metal battery snap fitting is firmly connected. If the
metal fitting is loose, adjust it and recheck the
connection. If it isn't connected securely, the power
may not be turned on, and a power may be turned
off during the use.
Adjustments and repairs should be made only by
technically qualified personnel.
For the inside memory protection, make sure the
power is turned off before connecting or
disconnecting the AC adapter.
This product is designed for indoor use, and
operates reliably from 0 to 40 .
Do not store or use the product where it could be
exposed to direct sunlight, high temperature or
humidity, or condensation. Under such conditions,
the product may be damaged and insulation may
deteriorate so that it no longer meets specifications.

10

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NOTE

For circuits which carry several superimposed
currents, correct measurements may not be
obtained.
Accurate measurement may be impossible in
the presence of strong magnetic fields, such
as near transformers and high-current
conductors, or in the presence of strong
electromagnetic fields such as near radio
transmitters.

11

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Chapter Summary

This manual consists of the following chapters.
"Introduction", "Safety Notes", "Notes on Use"
describe precautions on use, overview, and
features of this unit.
Be sure to read them all. Next, check Chapter
1 to 3 and the unit to confirm your
understanding of the function.

Chapter 1 Product Outline

Explains the parts and functions of the unit.

Chapter 2 Measurement Procedure

Explains how to use the 3283 for measurement.

Chapter 3 Battery Replacement

Explains how to replace the battery used to
power the 3283.

Chapter 4 Attaching the Hand Strap

Explains how to attach the hand strap, for easy
handling of the unit in the field.

Chapter 5 Specifications

Lists the specifications of the 3283 CLAMP ON
LEAK HiTESTER.

Chapter 6 Troubleshooting

Describes points to check before requesting
service.

Chapter 7 Service

Explains how to get the unit serviced.

12

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13

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Chapter 1 Product Outline

_____________________________________________

Chapter 1

Product Outline

1.1 Product Outline

1.2 Features

The 3283 CLAMP ON LEAK HiTESTER is
designed for wide-range measurement on live
circuits, from very small leak currents up to load
currents of 200 amperes. The clamp part is
made of material with high magnetic
permeability, to minimize adverse effects
caused by external magnetic fields, and to
reduce tolerances due to the position of the
measured conductor.

High-sensitivity range with 10 mA full-scale point

Allows accurate measurement even of minute
leak currents (resolution 10μA).

Wide measurement range

Five range settings from 10 mA to 200 A make
the 3283 suitable for many applications.

Microprocessor-controlled functions

In spite of the compact dimensions of the unit,
versatile functions such as SLOW and MAX/MIN
are made possible by the built-in
microprocessor.

14

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Chapter 1 Product Outline

_____________________________________________

True rms indication

The true rms conversion circuit delivers accurate
results not affected by leak current distortion.

Filtering

The widespread use of switching power supplies
and equipment incorporating inverter technology
frequently causes harmonics to be
superimposed in the leak current waveform. The
filter in the 3283 allows two kinds of
measurement, for leak current caused by
insulation faults and for leak currents including
harmonics.

Output jack

The output jack allows easy connection to a
level recorder or other equipment (level
recorder output: DC, waveform output: AC).

Unaffected by external magnetic fields and

conductor position
The clamp sensor and magnetic shield are
made of material with high magnetic
permeability, allowing precise measurement also
in the vicinity of transformers, electric motors
and other sources of magnetic fields. Since the
influence of the conductor position on the
measurement result is negligible, residual
current characteristics are not a problem even
when using the unit as a zero-phase
transformer.

Low power consumption

Power consumption is less than 100 mV A,
allowing the unit to operate continuously for up
to 40 hours on a single 6F22 (006P) battery.

15

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Chapter 1 Product Outline

_____________________________________________

Dual power supply design

The unit can be powered using the optional
9445-02 AC adapter (SA10-0910N, SINO­AMERICAN), 9445-03 AC adapter (for EU)
(SA10-0910G, SINO-AMERICAN), or from a
battery.

16

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Chapter 1 Product Outline

_____________________________________________

Top and Side View

1

2

3

4

5

6

7

8

1.3 Parts and Functions

17

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Chapter 1 Product Outline

_____________________________________________

1. Clamp sensor

2. Operation lever

3. Key switches

4. Display (LCD)

5. Output jack

6. AC adapter jack

7. Rear cover

8. Hand Strap

18

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Chapter 1 Product Outline

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AC

AUTO

Auto-range

SLOW

Update display once every 3 seconds

REC

Record function

MAX

Maximum value

MIN

Minimum value

AVE

Average value = (maximum value +

minimum value/2)

min

1 minute/segment (bar graph)

hour

1 hour/segment (bar graph)

HOLD

Data hold function

APS

Auto power off function

MON

Waveform output (AC) is active

REC

Recording output (DC) is active

FILTER

Filter function is active

Hz

Frequency

A, mA

current

RMS

True root mean square value
Input over (bar graph)
Battery low warning

19

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Chapter 2 Measurement Procedure

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Fresh battery

Battery capacity 50%

Battery capacity 0
Beep tone sounds 3 times

Chapter 2

Measurement Procedure

2.1 Preparations

1. Remove the rear cover and insert the battery.
(Refer to "Chapter 3 Battery Replacement".)

2. Press the

POWER

key to turn the unit on.
Verify that all segments of the display light up
briefly. Then the model name is shown, and the
bar graph indicates the battery condition for a
second.

3. The AC current measurement mode is activated

【 Battery low voltage power-off】

After the mark lights and battery voltage
drops below a certain level, for the inside
memory protection, the power goes off
automatically. When this occurs,

bAtt

and

Lo

are displayed.
When power goes off after display of these
marks, replace the exhausted battery with a
new one.

20

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Chapter 2 Measurement Procedure

_____________________________________________

single-phase 3-lead circuits

Transformer

b

clamp all three leads

of the circuit

b

a

Ig: leak Current

E (PE)

Load
device

Ig

2.2 Leak Current Measurement

A

1. Press the

A

key.

2. Clamp the tester on the conductor, so that the
conductor passes through the center of the
clamp sensor. For measurement of grounded
leads, clamp the tester on one lead only (see
a). For overall measurements, clamp the tester
on the entire circuit path (see B).

21

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Chapter 2 Measurement Procedure

_____________________________________________

three-phase 3-lead
circuits

b

clamp all three leads of the circuit

b

E (PE)

a

Ig

a

PE

Load
device

NOTE

For measurement of single-phase 2-lead
circuits, clamp both leads of the circuit.
For measurement of three-phase 4-lead
circuits, clamp all four leads of the circuit. If
this is not possible, the measurement can also
be carried out on the ground lead of the
equipment.

22

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Chapter 2 Measurement Procedure

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NOTE

Do not input current that exceeds the
maximum continuous input of the electric
current range.

Measurement may not be accurate in the
cases below.
(1) When there is large current (of about 100

A) flowing through a nearby electric line

(2) When using the 3283 to measure special

waveforms, such as those on the secondary
side of an inverter

Note that a value of several tens of amperes
may be displayed when opening or closing the
clamp sensor, or when changing the electric
current range. This is not an error. It may take
some time for the display to return to zero.
However, starting measurement before the
display returns to zero will not affect
measurement.

3. The effective value (

RMS

) of the leak current is
shown on the digital display. The selected
current range is shown at the bottom of the
display.

23

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Chapter 2 Measurement Procedure

_____________________________________________

b

b′

a

Ig

c

c′

A

B

single-phase 3-lead
circuits

Load
device

Load
device

E (PE)

【Checking for insulation faults】

Normally, for a E (PE) grounding installation of
a transformer, the measurement will first be
made to check for overall circuit leak current in
the ground lead (a). Current changes can be
used to diagnose the leak current condition.
When leak current has been detected, the
measurement should proceed from the power
source towards the load, using overall
measurement.

1. If an insulation fault in the wiring has occurred
at position A in the illustration, leak current will
be detected at position b using overall
measurement, but not at position b'.

2. If an insulation fault in the load equipment has
occurred at position B in the illustration, leak
current will be detected at position c using
overall measurement, but not at position c'.

3. For detection of intermittent leak current
conditions (such as only when a certain piece of
equipment is operating), the use of a level
recorder will be helpful.

24

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Chapter 2 Measurement Procedure

_____________________________________________

SLOW→Hz→RMS

NOTE

The update speed cannot be changed for
frequency display.

RMS value display→Current range display

NOTE

The flashing segment indicates the full-scale
position.

【Range switching】

Each push of the

RANGE

key switches the

range in the order 10 mA → 100 mA → 1A→
10 A → 200 A →

AUTO

.

【Changing the display characteristics SLOW】

If the indicated current value fluctuates rapidly
and is hard to read, you can select a slower
update rate (once every 3 seconds) by pressing
the

SLOW/Hz

key.

The key cycles through the following modes:

【Bar graph display BAR GRAPH】

The current range display can be switched to
bar graph operation. The bar graph shows the
rms value of the measured current.
The bar graph display refresh rate is "FAST" (4
times per second).

1. Press the

BAR GRAPH

key.

2. The current range display is switched to bar
graph operation.

Each push of the

BAR GRAPH

key toggles

between the following modes:

25

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Chapter 2 Measurement Procedure

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NOTE

There is no frequency output function.
Enable the filter function (see 2.3) when

conducting measurement in the cases below.

(1) When meaningless data is displayed due to

noise

(2) When using the 3283 to measure special

waveforms, such as those on the
secondary side of an inverter

The 3283 may not be able to perform

measurement in the cases below.

(1) When using input current that is 1/10 or

less of the full electric current range

(2) When measuring high frequencies with the

filter function enabled

The range display (

AUTO

and Bar graph)

indicates the electric current range.

SLOW→Hz→RMS

【Frequency (Hz) display】

1. While the display is switched to

SLOW

mode,

press the

SLOW/Hz

key.

2. The frequency of the measured current is
displayed.
If there is no input, and input is lower than
30Hz, "----" is shown.
Each push of the

SLOW/Hz

key cycles

through the following modes:

26

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Chapter 2 Measurement Procedure

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X

NOTE

The frequency of special waveforms such as
at the secondary side of an inverter may not
be indicated correctly.

Depending on the magnitude and frequency of
the input current, resonances may be heard
from the clamp jaw. This does not affect the
measurement.

When the size of input current is unknown,
begin measurement with the 200 A range (filter
function is invalid) selected .

Do not input a current which exceeds the
maximum continuous input rating of the current
range.

【Load current measurement】

Be sure to clamp only one lead of the
conductor.

27

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Chapter 2 Measurement Procedure

_____________________________________________

output rate：1 V/10 mA

A

m

p

l

i

t

u

d

e

[

d

B

,

0

d

B

=

1

V

]

Frequency [Hz]

MON output frequency bandwidth (example: 10 mA range)

NOTE

The effect of the filter function is reflected in
numeric data output and waveform output.

2.3 Filter Function FILTER

The widespread use of switching power supplies
and equipment incorporating inverter technology
can cause harmonics to be superimposed on
the leak current waveform.

1. Press the

FILTER

key. The

FILTER

indication
appears. The integrated low-pass filter is now
active, cutting off unwanted higher-frequency
components.

2. Pressing the

FILTER

key once more turns the
low- pass filter off, allowing measurement of
leak current including any high-frequency
components. The

FILTER

indication disappears.

28

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Chapter 2 Measurement Procedure

_____________________________________________

NOTE

Pressing the

MAX/MIN

key during auto-

ranging (

AUTO

) fixes the range at the current

setting.

2.4 Data Hold Function HOLD

2.5 Recording Function REC

This function allows freezing the display at any
desired point for easy reading.

1. Press the

HOLD

key. The

HOLD

indication
appears on the display and the digital display
value is maintained.
To cancel the data hold function, press the

HOLD

key again.

The recording function can be used to display
the maximum display value, minimum display
value, maximum/minimum average, and the
instantaneous value.

1. Press the

RANGE

key to select the current

measurement range.

2. Press the

MAX/MIN

key while measuring

current with the conductor clamped. The

REC

indication flashes and the maximum, minimum,
or average value for the period starting when
the key was pressed to the present point can be
displayed. The instantaneous value can also be
displayed. Only one of these values can be
shown at any one time, but the other values are
kept in memory.

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Chapter 2 Measurement Procedure

_____________________________________________

MAX→MIN→AVE→instantaneous value

(no indication)

3. During measurement, the MAX/MIN key can
be used to select the value that should be
shown.

MAX: Maximum value is shown.
MIN: Minimum value is shown.
AVE: Average value is shown = (maximum

value + minimum value)/2
If none of the MAX, MIN,orAVE indicators is
shown, the display shows the instantaneous
value.

4. Pressing the HOLD

key will stop the recording
function. The HOLD indication appears and the
REC indication stops flashing.
By pressing the MAX/MIN

key in this
condition, the MAX, MIN, and AVE values
stored in the internal memory can be called up
on the display, as follows.

While HOLD is shown, the elapsed time is not
incremented. Also if the clamp sensor is
removed from the conductor for easier reading,
the minimum value will not return to zero.
Pressing the HOLD

key once more causes the

HOLD indication to go out. The recording

function resumes, and REC flashes again.

30

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Chapter 2 Measurement Procedure

_____________________________________________

NOTE

Momentary power loss and power surges

cannot be detected.

When the unit is turned off, accumulated data

are lost.

The maximum recording duration depends on

the remaining battery capacity.

The lowest possible frequency that can be

displayed is 30.0 Hz.

If the measurement object was clamped after
activating the recording function, the minimum
value is always zero. To prevent this, clamp
the conductor first and the press the

MAX/MIN

key to activate the recording

function.

If the clamp sensor is removed from the
measurement object while the recording
function is active, the minimum value will
become zero. To prevent this, press the

HOLD

key before removing the clamp

sensor.

To turn off the recording function, press

A

key. The maximum value, minimum value,

and average value are cleared.

31

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Chapter 2 Measurement Procedure

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rms value → elapsed time → elapsed time → current range

(instantaneous value) (hours) (minutes)

【

Bar graph indication BAR GRAPH

】

The bar graph display can be changed. It is
also possible to display the current range,
effective (rms) value of the measured current,
and the elapsed time (hours and minutes).

1. Press the BAR GRAPH

key.

2. The current range display switches to bar graph
indication.
Each push of the BAR GRAPH

key cycles

through the following modes:

When the elapsed time display is activated, the
bar graph segments flash and the elapsed time
from the point when the MAX/MIN

key was
pressed is displayed.
When "min" is shown in the right-hand corner
of the bar graph, each segment of the bar graph
corresponds to one minute. Every time one
minute elapses, one segment of the flashing
bar graph goes on. When all segments on the
bar graph go on, the elapsed time is 30
minutes.
When the elapsed time exceeds 30 minutes,
one segment of the flashing bar graph goes off
every time one minute elapses.

32

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Chapter 2 Measurement Procedure

_____________________________________________

When the segments left of a flashing segment
remain on: the number of "on" segments
represents the elapsed time (0 to 29).
The illustration below shows when 20 minutes
have elapsed:

When the segments right of a flashing segment
remain on: the number of "off" segments (+30)
represents the elapsed time (30 to 59).
The illustration below shows when 50 minutes
have elapsed:

When "hour" is selected, one segment
corresponds to one hour, and the maximum
length of time that can be displayed is 59 hours.

The illustration below shows indication when 1
hour 40 minutes have elapsed.

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Chapter 2 Measurement Procedure

_____________________________________________

2.6 Auto Power-Off Function

APS

2.7 Battery Low Warning

2.8 Beep Tone

When APS is displayed, the auto power-off
function is active.
If no key is pressed for about 10 minutes, the
unit turns itself off automatically.
Immediately before turning off, the APS
indication flashes and a beep tone is heard for
about 30 seconds.
Pressing any key except the POWER key will
extend the powered state for another 10
minutes.
To disable the auto power-off function, hold
down the HOLD

key while turning the unit on
by pressing the POWER key. The APS
indication then is not shown.
While using the recording function or the output
function of the unit, auto power-off is disabled.

When this indication appears, the battery is
exhausted and correct measurement is not
assured. Replace the battery as early as
possible.
Refer to "Chapter 2【Battery low voltage power­off】".

To disable the beep tone, hold down the

RANGE

key while turning the unit on by

pressing the POWER key.

34

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Chapter 2 Measurement Procedure

_____________________________________________

NOTE

If SLOW is selected while the unit is in fast
mode, the display update rate will be normal (2
times per second).

NOTE

Circuit time constant 200 ms MAX.

2.9 Fast Mode

The display update rate can be set to 4 times
per second. This is useful for example to
measure load currents with frequent variations
and similar applications.

1. Press the

A

key twice in succession.
The indication "F" is briefly shown, and the unit
switches to fast mode. From now on, the
indication "F" will appear every time the

A

key
is pressed.To cancel the fast mode, press
the

A

key twice in succession.

【

Example to measure load currents with
frequent variations

】

1. Press the

A

key twice in succession to

activate fast mode.

2. Press the RANGE key to set the current range
to a fixed setting.
When the drive current is unknown, begin
measurement with the 200 A range selected

3. Use the recording function to record the
maximum value, for easier reading.

35

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Chapter 2 Measurement Procedure

_____________________________________________

REC

(recording output) → MON(waveform output) → out

(auto power-off disabled) (auto power-off disabled) (auto power-off enabled)

2.10 Output Function OUTPUT

The output type is indicated by the

REC

(recording output, DC) or

MON

(waveform
output, AC) indication.
An output signal corresponding to the measured
value can be obtained from the unit. The output
voltage (AC/DC) normally is 1 V for the full­scale count (1000). In the 200 A range, the
output voltage (AC/DC) is 2 V for the full-scale
count (2000).

1. Press the

RANGE

key to set the current range

to a fixed setting.

2. Press the

OUTPUT

key so that the

REC

indication appears. The output function is now
active.
Auto power-off is disabled. (The

APS

indication

goes out.)

Each push of the

OUTPUT

key cycles through

the following modes:

36

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Chapter 2 Measurement Procedure

_____________________________________________

【Output rate】

MON

(waveform output : AC)

REC

(recording output : DC)

Current

Range

Output rate Accuracy

Crest

Factor

10 mA AC/DC 1 V/10 mA

AC/DC:

3.0% rdg. 10 mV

(40Hz to 2 kHz)

2.5 or less

100 mA AC/DC 1 V/100 mA

1 A AC/DC 1 V/1 A

10 A AC/DC 1 V/10 A

200 A AC/DC 2 V/200 A 1.5or less

【Output response】

REC MON

(Circuit time constant)

200 ms or less

frequency bandwidth

(-3 dB) 5 Hz to 15 kHz

37

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Chapter 2 Measurement Procedure

_____________________________________________

NOTE

To use the output function, be sure to push the

OUTPUT

key so that either

REC

or

MON

is

shown.

There is no frequency output function.
The filter function can be used to cut unwanted

high- frequency components.

If the

OUTPUT

key is pressed while auto-

range (

AUTO

) is enabled, the range is fixed at

the current setting (

AUTO

indication goes out).

For connection to a level recorder, use the

separately available 9094 OUTPUT CORD.

Use a high-impedance input device (e.g.,
recorder) for receiving output. (We recommend
a device with input impedance of at least 100
kΩ.)

NOTE

Even if the AC adapter is connected, if the
battery is exhausted (the mark lights), the
power may turn off in order to preserve the
data in the internal memory. To continue using
the instrument, replace the depleted battery
with a new battery, or remove the battery
completely.

When the AC adapter is used and there is a
high amount of noise in the power line, the
display may show several counts or noise may
be present in the output. In such a case,
connect the ground terminal of the level
recorder or the L side of the input to ground.

Pressing the

HOLD

key does not hold the

output signal.

Please note that the output signal is available
also when

REC

and

MON

indications are out,

but the auto power-off function is enabled.

【Using AC Adapter】

For long-term recordings, use the AC adapter (option).

38

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Chapter 2 Measurement Procedure

_____________________________________________

39

__________________________________________________

Chapter 3 Battery Replacement

_____________________________________________

CAUTION

Do not fix the back casing screws too tightly.
The torque about 0.5N･m is recommended.

NOTE

Fix the terminals of battery snap and battery
exactly.

Chapter 3

Battery Replacement

1. Remove the two fastening screws of the rear
cover, using a Phillips screwdriver.

2. Remove the rear cover.

3. Remove the old battery without pulling the
codes of the snap.

4. Securely connect the battery to the battery
snap.

5. Replace the rear cover and tighten the fastening
screws.

40

__________________________________________________

Chapter 3 Battery Replacement

_____________________________________________

41

__________________________________________________

Chapter 4 Attaching the Hand Strap

_____________________________________________

Chapter 4

Attaching

the Hand Strap

Explains how to attach the hand strap, for easy
handling of the unit in the field.

42

__________________________________________________

Chapter 4 Attaching the Hand Strap

_____________________________________________

43

__________________________________________________

Chapter 5 Specifications

_____________________________________________

Chapter 5

Specifications

5.1 Measurement Specifications

Temperature and humidity for guaranteed
accuracy:

23 5 (73 9), 80% RH or

less

Guaranteed accuracy period:

1 year, or
opening and closing of the Clamp Sensor
10,000 times, whichever comes first

44

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Chapter 5 Specifications

_____________________________________________

Current Range

(Accuracy

Range)

Resolution

Accuracy

(NOTE)

(%rdg.+dgt.)

Maximum

permitted

current

10 mA
(1.00 to 10.00 mA)

0.01 mA

45 to 66 Hz:

(1.0%+5)
40 to 45
66 to 2 kHz:

(2.0%+5)

20 Arms
AC,
continuous
(see fig. A)

100 mA
(10.0 to 100.0 mA)

0.1 mA

1A
(0.100 to 1.000 A)

0.001 A

10 A
(1.00 to 10.00 A)

0.01 A

200 A
(10.0 to 200.0 A)

0.1 A

45 to 66 Hz:

(1.5%+5)
40 to 45
66 to 2 kHz:

(2.0%+5)

200 Arms
AC,
continuous
(see fig. A)

NOTE

Accuracy with filter function disabled.

When the filter function is enabled.
10 mA Range to 10 A Range:
50 Hz to 60 Hz (1.5%+5)
200 A Range: 50 Hz to 60 Hz (2.0%+5)

5.1.1 AC current Arms(true rms indication)

45

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Chapter 5 Specifications

_____________________________________________

Effect of conductor
position

within 0.1%
(in any direction from clamp sensor
center)
100 A MAX: within 0.5%

Effect of external
magnetic fields

AC 400 A/m corresponds to 5 mA,
max. 7.5 mA

Maximum rated
voltage to earth

max. 300 V rms AC (insulated
conductor)

Frequency [Hz]

C

u

r

r

e

n

t

[

A

]

Fig.A Frequency-dependent deletion characteristics

Frequency Range

(Accuracy Range)

Resolution

Accuracy

(%rdg.+dgt.)

100 Hz
(30.0 to 99.9 Hz)

0.1 Hz (0.3%+1)

1000 Hz
(95 to 1000 Hz)

1Hz (1.0%+1)

NOTE

The frequency range is automatically specified.

5.1.2 Frequency Hz

46

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Chapter 5 Specifications

_____________________________________________

Functions

Recording

Maximum (MAX), minimum (MIN),
average (AVE) value display
selectable for AC current and
frequency measurement

Data hold

Data hold function

Auto power-off

Automatic shutdown after 10.5 1
minutes. Beep tone warning.
Extension and disabling possible.

Battery low voltage
power-off

When the battery voltage falls below
a certain level, the function shuts
down the unit to prevent
malfunctions.

Beep tone

ON/OFF

Display

LCD panel

Digital indication

2000 counts

Bar graph indication

35 segments
Current range display or rms display
selectable

Over-range
indication

"

O.L.

" (bar graph)

Over range warning sound (buzzer)

Battery low warning

Battery low voltage
power-off

"

bAtt Lo

"
(7 segments used)Power turned off
after display

5.2 General Specifications

47

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Chapter 5 Specifications

_____________________________________________

Data hold indication

HOLD

Auto power-off
indication

APS

Filter function

Cutoff frequency 180 Hz 30 Hz

(-3 dB)

Display update rate

Digital indication
NORMAL: 500 ms 25 ms

(approx. 2 times/second)

SLOW : 3 s 0.15 s

(approx. 1 time/3seconds)

FAST : 250 ms 12.5 ms

(approx. 4 times/second)
Bar graph indication
FAST only

Display response
time

2.2 s max.

Range switching

Auto range, manual (fixed) range
(selectable). Frequency
measurement with auto-range only.

Output function

REC (recording output),
MON (waveform output) (selectable)

Output rate

REC : 1 V DC at full-scale point

(In the 200 A range only, 2
VDC/f.s.)

MON : 1 V AC at full-scale point

(In the 200 A range only, 2
VAC/f.s.)

Output Accuracy

3.0%rdg. 10 mV (40 to 2 kHz)

Output response

REC (DC) : circuit time constant 200

ms max.

MON (AC) : frequency bandwidth

(-3 dB) 5 Hz to 15 kHz

Output impedance

200Ω max.

48

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Chapter 5 Specifications

_____________________________________________

Circuit dynamic
characteristics

(crest factor)

2.5 max. (1.5 for 200 A range)

Withstand voltage

Chassis - clamp core: 3536 Vrms AC
for 15 seconds

Insulation
resistance

Clamp core - circuitry: 630 kilohms
min.

Location for use

Indoor, altitude up to 2000 m

Applicable
standards

Safety:

EN 61010-1:2001
Voltage input: Pollution level
2, Measurement categories

Ⅲ

(expected transient
overvoltage: 4000 V)
EN 61010-2-032:2002
Type B current sensor
EN 60529:1991 IP40
(protected against access to
hazardous parts with a wire)

EMC:

EN 61326:1997+A1:1998+
A2:2001+A3:2003
EN 61000-3-2:2000
EN 61000-3-3:1995+A1:2001

Maximum
conductor diameter
for measurement

φ40 mm max.

Operating
temperature and
humidity range

0to40 , 80%RH or less
(no condensation)

Temperature
characteristics

In 0 to 40 range: 0.05 x accuracy
specifications/

Storage
temperature
range

-10 to 50 (no condensation)

49

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Chapter 5 Specifications

_____________________________________________

Power source

One 6F22 (006P) 9 V battery or
9445-02 AC ADAPTER

(SA10-0910N, SINO-AMERICAN) or
9445-03 AC ADAPTER (EU) (SA10­0910G, SINO-AMERICAN) (option)

Maximum power
consumption

100 mVA

Battery life

approx. 40 hours
(continuous, no load)

External
dimensions

approx. 62W x 225H x 39D mm

Mass

approx. 400 g

Accessories

9399 CARRYING CASE 1
Hand Strap 1
Battery: 6F22(006P) 1
Instruction manual 1

Options

9445-02 AC ADAPTER
(SA10-0910N, SINO-AMERICAN)
9445-03 AC ADAPTER (EU)
(SA10-0910G, SINO-AMERICAN)

9094 OUTPUT CORD

50

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Chapter 5 Specifications

_____________________________________________

51

__________________________________________________

Chapter 6 Troubleshooting

_____________________________________________

Problem Cause Action

Problems related to the power supply

Power will not
turn on
Power shuts
off during
operation

The battery may
be low or
depleted

Replace it with a
new battery

The battery snap
terminal may be
deformed,
causing contact
failure

Remove the
battery, then use
radio pliers to
straighten the
battery snap
terminal

When the AC
adapter is used,
power is only
supplied through
the AC adapter

When using the
battery,
disconnect the
AC adapter.
Insert the AC
adapter into the
AC outlet

lights

lights,
followed by
immediate
power
shutdown

The battery may
be low or
depleted

Replace it with a
new battery

Chapter 6

Troubleshooting

If the unit seems not to be working normally,
check the following points first before requesting
service.

52

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Chapter 6 Troubleshooting

_____________________________________________

Problem Cause Action

Problems related to display

An error
between E.001
and E.005 or
E.100 is
displayed.

Internal memory
may be
damaged

Request repair

Problems related to the clamp sensor

The clamp
sensor
generates a
sound during
measurement

When large
current or high­frequency
current is
measured,
resonance may
occur,
generating a
sound

Reclamp the
conductor.
Measure micro­current or low­frequency
current to
determine
whether a sound
is generated

53

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Chapter 6 Troubleshooting

_____________________________________________

Problem Cause Action

Problems related to output function

The output
rate differs
from the
specification
The output is
too low

The 200 A range
is used

Check the
electric current
range. Unlike
other ranges, the
full scale of the
200 A range is 2
V/fs

The input
impedance of
the device used
to receive output
is too low

Check the input
impedance of
the device used
to receive
output. We
recommend
input impedance
of at least 100
kΩ

MON output is
used for
measurement at
high frequency

The guaranteed
range of
accuracy is 40
Hz to 2 kHz. The
specified
frequency band
of 5 Hz to 15 Hz
is a -3 dB band.
At 15 kHz, the
amplitude is
reduced to
approximately
70%

54

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Chapter 6 Troubleshooting

_____________________________________________

55

__________________________________________________

Chapter 7 Service

_____________________________________________

Chapter 7

Service

To clean the product, wipe it gently with a soft

cloth moistened with water or mild detergent.
Never use solvents such as benzene, alcohol,
acetone, ether, ketones, thinners or gasoline,
as they can deform and discolor the case.
The minimum stocking period for replacement
parts is five years after end of production.
For information regarding service, please
contact your dealer or the nearest HIOKI
representative.
If the unit is not functioning properly, check
the battery. If a problem is found, contact
your dealer or HIOKI representative. Pack
the unit carefully so that it will not be
damaged during transport, and write a
detailed description of the problem. HIOKI
cannot bear any responsibility for damage
that occurs during shipment.

56

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Chapter 7 Service

_____________________________________________

HIOKI 3283 CLAMP ON LEAK HiTESTER

Instruction Manual

Publication date: September 2006 Revised edition 13

Edited and published by HIOKI E.E. CORPORATION

Technical Sales Support Section

All inquiries to International Sales and Marketing

Department

81 Koizumi, Ueda, Nagano, 386-1192, Japan

TEL: [phone] / FAX: [phone]

E-mail: [e-mail]

URL http://www.hioki.co.jp/

Printed in Japan 3283A981-08

･

All reasonable care has been taken in the production of

this manual, but if you find any points which are

unclear or in error, please contact your supplier or the

International Sales and Marketing Department at HIOKI

headquarters.

･

In the interests of product development, the contents of

this manual are subject to revision without prior notice.

･

Unauthorized reproduction or copying of this manual is

prohibited.

HEAD OFFICE

81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail]/
URL http://www.hioki.co.jp/

HIOKI USA CORPORATION

6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]

3283A980-13 06-09H

Printed on recycled paper