Global Test Supply 3284 User manual

3284
CLAMP ON
AC/DC HiTESTER
INSTRUCTION MANUAL
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Contents
Introduction i
Shipping Check ii
Safety iii
Attentions During Use vi
Organization of This Manual x
Chapter 1 Product Outline 1
1.1 Product Outline 1
1.2 Features 2
1.3 Parts and Functions 3
1.4 Flowchart of Key Operations 9
1.4.1 Current Measurements Mode 9
1.4.2 Voltage Measurements Mode 10
1.4.3 Frequency Measurements Mode 11
1.5 Modes 12
Chapter 2 Measurement Procedure 15
2.1 Preparations 15
2.2 Current Measurement 16
2.2.1 Measuring DC Current (DC A) 16
2.2.2 Measuring AC Current (AC A) 17
2.2.3 Measuring AC/DC Current (AC+DC A) 18
2.2.4 Peak Hold Measurement 20
2.2.5 Output Function 21
2.3 Voltage Measurement 26
2.3.1 Measuring DC Voltage (DC V) 26
2.3.2 Measuring AC Voltage (AC V) 27
2.3.3 Measuring AC/DC Voltage (AC+DC V) 28
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2.3.4 Peak Hold Measurement 29
2.4 Frequency Measurement 30
2.4.1 Frequency Measurement in Current Mode 30
2.4.2 Frequency Measurement in Voltage Mode 31
2.4.3 Output Function For Frequency 32
2.5 Auto-Zero-Adjustment/
Zero-Cancel Correction Function 34
2.5.1 Auto-Zero-Adjustment Function 34
2.5.2 Zero-Cancel Correction Function 35
2.6 Data Hold Function HOLD 35
2.7 Alteration of Indication Updates 36
2.7.1 SLOW mode 36
2.7.2 FAST mode 36
2.8 Recording Function REC 36
2.9 Auto Power-Off Function APS 38
2.10 Battery Low Warning 39
2.11 Beep Tone 39
Chapter 3 Specifications 41
3.1 Measurement Specifications
(23℃±5℃, 80% RH max.) 41
3.1.1 Current Measurement Specifications 41
3.1.2 Voltage Measurement Specifications 46
3.2 General Specifications 48
Chapter 4 Battery Replacement 51
Chapter 5 AC Adapter (Optional) 53
Chapter 6 Attaching The Hand Strap 55
Chapter 7 Troubleshooting 57
Chapter 8 Service 63
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i
Introduction
Introduction
Thank you for purchasing this HIOKI "3284
CLAMP ON AC/DC HiTESTER." To get the
maximum performance from the unit, please read
this manual first, and keep this at hand.
Request
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.
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ii
Shipping Check
Shipping Check
When the unit is delivered, check and make sure
that it has not been damaged in transit. In
particular, check the accessories, panel switches,
keys, and terminals.
If the unit is damaged, or fails to operate according
to the specifications, contact your dealer or HIOKI
representative.
Check the 3284 Unit and the Supplied
Accessories
Main unit
3284 CLAMP ON AC/DC HiTESTER
Supplied accessories
9399 Carrying Case 1
9207 Test lead (red and black) 1
Hand Strap 1
6F22(006P) 1
Instruction manual 1
Options
9094 OUTPUT CORD
9445 AC ADAPTER(UP01211090, POTRANS)
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iii
Safety
DANGER
This equipment is designed according to IEC
1010 Safety Standards, and has been tested for
safety prior to shipment. Incorrect
measurement procedures could result in injury
or death, as well as damage to the equipment.
Please read this manual carefully and be sure
that you understand its contents before using
the equipment. The manufacturer disclaims all
responsibility for any accident or injury except
that resulting due to defect in its product.
Safety
This Instruction Manual provides information and
warnings essential for operating this unit in a safe
manner and for maintaining it in safe operating
condition. Before using this unit, be sure to
carefully read the following safety notes.
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iv
Safety
DANGER
Indicates that incorrect operation
presents extreme danger of accident
resulting in death or serious injury to the
user.
WARNING
Indicates that incorrect operation
presents significant danger of accident
resulting in death or serious injury to the
user.
CAUTION Indicates that incorrect operation
presents possibility of injury to the user
or damage to the equipment.
NOTE Denotes items of advice related to
performance of the equipment or to its
correct operation.
The following symbols are used in this Instruction
Manual to indicate the relative importance of
cautions and warnings.
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v
Safety
This symbols is affixed to locations on the
unit where the operator should consult
corresponding topics in this manual (which
are also marked with the symbol) before
using relevant functions of the unit.
In the manual, this mark indicates
explanations which it is particularly
important that the user read before using
the unit.
Indicates AC (Alternating Current).
Indicates DC (Direct Current).
Indicates both DC (Direct Current) and AC
(Alternating Current).
Indicates a device which is double-
insulated.
Safety Symbols
f.s. (maximum display or scale value, or length of scale)
Signifies the maximum display (scale) value or the
length of the scale (in cases where the scale consists
of unequal increments or where the maximum value
cannot be defined).
In general, this is the range value (the value written
on the range selector or equivalent) currently in use.
rdg. (displayed or indicated value)
Signifies the value actually being measured, i.e., the
value that is currently indicated or displayed by the
measuring instrument.
dgt. (resolution)
Signifies the smallest display unit on a digital
measuring instrument, i.e., the value displayed when
the last digit on the digital display is "1".
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vi
Attentions During Use
DANGER
･
･･
･Use clamp testers only on power lines up to 600
Vrms AC, to avoid short-circuits and accidents
that could result in injury or death.
･
･･
･Do not use clamp testers on bare conductors.
When the clamp core jaw is open, there is a risk
of short-circuits and accidents that could result
in injury or death.
･
･･
･Always connect the clamp sensor to the
secondary side of a breaker. On the secondary
side of a breaker, even if the lines are shorted
the breaker can trip and prevent an accident.
On the primary side, however, the current
capacity may be large, and in the event of a
short-circuits there may be a serious accident.
･
･･
･When using an AC adapter, use only a specified
AC adapter, HIOKI model 9445 (UP01211090,
POTRANS).
Attentions During Use
In order to ensure safe operation and to obtain
maximum performance from the unit, observe the
cautions listed below.
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vii
Attentions During Use
WARNING
･
･･
･To prevent electric shock, do not allow the unit
to become wet and do not use the unit when
your hands are wet.
･
･･
･To avoid electric shock accidents, when
carrying out measurement on live lines, wear
proper protective gear, including insulating
rubber gloves, insulating rubber boots, and
safety helmet, and use extreme caution.
･
･･
･During current measurement, to avoid an
electric shock accident, do not connect the test
leads to the unit.
･
･･
･Do not input voltage exceeding 600 Vrms (1000
V max.).
･
･･
･To avoid electric shock when replacing the
batteries, first disconnect the clamp portion
from the object to be measured. Also, after
replacing the batteries, always replace the back
case before using the unit.
･
･･
･When replacing the batteries, be sure to insert
them with the polarity correct.
･
･･
･Do not short-circuits used batteries,
disassemble them, or throw them in a fire.
Doing so may cause the batteries to explode.
･
･･
･Be sure to dispose of used batteries according
to their type in the prescribed manner and in the
proper location.
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viii
Attentions During Use
CAUTION
･Do not store or use the unit where it will be
exposed to direct sunlight, high temperature, high
humidity, or condensation. If exposed to such
conditions, the unit may be damaged, the insulation
may deteriorate, and the unit may no longer satisfy
its specifications.
･The unit is a precision instrument: do not clamp any
foreign objects in the end of the clamp core, or
insert anything in the core gap.
･To avoid damage to the unit, do not subject the unit
to vibrations or shocks during transport or handling.
Be especially careful to avoid dropping the unit. Do
not exert excessive pressure on the clamp sensor
or attempt to wedge the sensor into a tight spot for
measurement.
･Before using the unit, inspect it and check the
operation to make sure that the unit was not
damaged due to poor storage or transport
conditions. If damage is found, contact your dealer
or HIOKI representative.
･Do not exceed the maximum input current rating,
which depends on the frequency of the current
being measured (see Fig.4) Be careful about the
evolution of heat, when the input frequency is high.
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ix
Attentions During Use
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.
･Make sure the power is turned off before plugging in
or unplugging the AC adapter.
NOTE ･Accurate measurement may be impossible in
locations subject to strong external magnetic fields,
such as transformers and high-current conductors, or
in locations subject to strong external electric fields,
such as radio transmission equipment.
･Gently wipe dirt from the surface of the unit with a
soft cloth moistened with a small amount of water
or mild detergent.
Do not try to clean the unit using cleaners
containing organic solvents such as benzine, alcohol,
acetone, ether, ketones, thinners, or gasoline. They
may cause discoloration or damage.
･When not in use for a long time, to prevent possible
corrosion caused by battery leakage, remove the
batteries before storage.
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x
Organization of This Manual
Organization of This Manual
Chapter 1
Product Outline
Explains the parts and functions of the unit.
Chapter 2
Measurement Procedure
Explains how to use the 3284 for measurement.
Chapter 3
Specifications
Lists the specifications of the 3284 CLAMP ON
AC/DC HiTESTER.
Chapter 4
Battery Replacement
Explains how to replace the battery used to power
the 3284.
Chapter 5
AC Adapter (Optional)
Explains how to use the AC adapter.
Chapter 6
Attaching the Hand Strap
Explains how to attach the hand strap, for easy
handling of the unit in the field.
Chapter 7
Troubleshooting
Describes how to check before requesting service.
Chapter 8
Service
Explains how to get the unit serviced.
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1
Chapter 1 Product Outline
Chapter 1
Product Outline
1.1 Product Outline
The 3284 CLAMP ON AC/DC HiTESTER makes it
possible to measure DC, AC or AC+DC current in
live power lines without tapping into or connecting
the lines. Using a one-chip microprocessor, the
tester provides many functions, including an
automatic zero adjust function that changes a
troublesome task into a one-touch operation. An AC
adapter connection terminal and an output terminal
are equipped so that you are able to measure by
connecting to other instruments such as recorders.
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2
Chapter 1 Product Outline
1.2 Features
･A multi-function microcomputer
The built-in microcomputer offers various functions
in a compact form.
･Display of true rms values
The true rms value conversion circuit allows
accurate measurement of currents with distorted
waveforms.
･Measurement for AC/DC
The unit permits measurement of AC superimposed
on DC, as well as measurement of half- and full-
wave rectification.
･Peak measurement
Allows measurement of peak hold values for either
voltage or current. Transitional peak values can
also be measured.
･REC function
Displays the maximum and minimum measured
values.
･Output terminal
You can record current or frequency by connecting
a recorder or an oscilloscope to the built-in output
terminal.
Current (Record output: REC, Waveform output:
MON)
Frequency (Record output: REC)
･Dual-power source
The unit operates on either a battery power or an
AC power source.
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3
Chapter 1 Product Outline
Top and Side View
①
②
③
④
⑤
⑥
⑦
⑨
⑧
⑫
⑭
⑬
⑮
⑯
⑩
⑪
⑰
⑱
1.3 Parts and Functions
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4
Chapter 1 Product Outline
DCＡAC+DCＡACＡ
REC
(Record output)
(Auto power-off inactive)
(Except for DC A)
MON
(Waveform output)
(Auto power-off inactive)
Light turned off
(Auto power-off active)
APS annunciator is on.
①POWER
･Used to turn power on/off
･To disable the auto power-off function, hold HOLD
and press POWER , when you turn power on.
②key
･Switches current modes as follow.
③RANGE
･Switches between auto and manual ranges in
measurements of current, voltage, or frequency.
･Switches manual ranges.
･Displays a cursor on the bar graph to show the
selected range.
･The current ranges are 20 A and 200 A. The
voltage ranges are 30 V, 300 V and 600 V. The
frequency ranges are 10 Hz, 100 Hz and 1000 Hz.
④HOLD
･Used to suspend or inactivate the screen-updating
function.
･To disable the auto power-off function when
powering on, hold HOLD and press POWER .
⑤OUTPUT
･Allows voltage output during current measurement or
frequency measurement in a current mode.
･The auto power-off function is inactivated.
･You can find how much the battery power remains
on the bar graph, when you press OUTPUT in a
current mode.
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5
Chapter 1 Product Outline
DC V AC+DC VAC V
⑥SLOW/PEAK/Hz
･SLOW slows down screen updating (once per three
seconds).
･FAST speeds up screen updating (four times per
second). There isn't an annunciator " FAST ".
Instead, the unit symbol blinks.
･PEAK measures peak values (Peak Hold).
･Hz measures frequency (in AC or AC+DC mode).
⑦
･Switches voltage modes as follows.
⑧MAX/MIN
･Displays the maximum value (MAX), the minimum
value (MIN), or the average value (AVE)ofthe
maximum and minimum values for the recording
(REC) function.
･MAX displays the maximum measured value after
the REC function is activated.
･MIN displays the minimum measured value after the
REC function is activated.
･AVE displays the average value of the maximum
and minimum measured values after the REC
function is activated.
･The auto power-off function is disabled in the REC
function.
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6
Chapter 1 Product Outline
⑨0ADJ/RESET
･Performs auto-zero-adjustment in DC A, AC+DC A
and DC V modes.
･Resets data when measuring peak values. Reset all
the data in a REC function.
･If zero is not indicated under no input in the AC A,
AC+DC A, AC V or AC+DC V modes, press
HOLD , then press 0ADJ/RESET to perform a zero-
cancel correction.
⑩Clamp sensor
･To measure current, open the top ends of the clamp
sensor by gripping the lever ⑪. Then position the
conductor to be measured at the center of the clamp
sensor and firmly close the clamp sensor.
⑪Lever
･Used to open and close the clamp sensor.
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7
Chapter 1 Product Outline
⑫Display (LCD)
Direct Current (DC)
Alternating Current (AC)
Alternating Current and Direct Current
(AC+DC)
ADJ Auto-zero-adjustment or zero-cancel
correction function is active
Battery low warning
HOLD Data hold function
MON Waveform output (AC) is active
REC Recording output (DC) is active
APS Auto power off function
AUTO Auto-range
SLOW Counter update once every 3 seconds
REC Record function
MAX Maximum value
MIN Minimum value
AVE Average value = (MAX +MIN)/2
Hz Frequency
VVoltage
PEAK Wave peak value
RMS True root mean square value
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