3184
Instruction Manual
DIGITAL POWER HiTESTER
Oct. 1996 Revised edition 2
3184A981-02 96-10H
EN
Contents
Introduction i
Inspection i
Safety Notes ii
Notes on Use iv
Chapter 1 Overview 1
1.1 Features 1
1.2 Names and Functions of Parts 2
Chapter 2 Specifications 7
2.1 General Specifications 7
Chapter 3 Basic Operating Principle 9
3.1 Active Power Measurements 9
3.2 Voltage and Current Measurements 10
3.3 Crest-Factor 11
Chapter 4 Operating Instructions 13
4.1 Operating Procedure 13
Chapter 5 3184-02 GP-IB Specifications 17
5.1 Outline 17
5.2 Interface Specifications 18
5.3 Panel Description 19
5.4 Talker Function 20
5.5 Listener Functions 21
5.6 Service Requests 23
5.7 Usage Precautions 24
5.8 Sample Programs 25
Chapter 6 Maintenance and Service 29
6.1 Fuse Replacement 29
6.2 Service 30
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I
I
ntroduction
Thank you for purchasing this HIOKI "3184 DIGITAL
POWER HiTESTER." To get the maximum performance
from the unit, please read this manual first, and keep
this at hand.
nspection
When the unit is delivered, check and make sure that it
has not been damaged in transit. In particular, check the
accessories, panel switches, and connectors.
If the unit is damaged, or fails to operate according to the
specifications, contact your dealer or HIOKI
representative.
Accessories
Fuse M0.5 A/250 V 1
(20×5.2 dia. mm arc-quencing midget)
Power cord 1
Instruction Manual 1
i
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Inspection
ii
G
S
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afety Notes
WARNIN
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.
This Instruction Manual provides information and
warnings essential for operating this equipment in a safe
manner and for maintaining it in safe operating
condition. Before using this equipment, be sure to
carefully read the following safety notes.
Safety symbols
In the manual, this mark indicates explanations
which it is particularly important that the user read
before using the equipment.
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Safety Notes
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R
G
N
The following symbols are used in this Instruction
Manual to indicate the relative importance of cautions
and warnings.
iii
DANGE
WARNIN
CAUTIO
NOTE
Indicates that incorrect operation presents extreme
danger of accident resulting in death or serious
injury to the user.
Indicates that incorrect operation presents
significant danger of accident resulting in death or
serious injury to the user.
Indicates that incorrect operation presents
possibility of injury to the user or damage to the
equipment.
Denotes items of advice related to performance of
the equipment or to its correct operation.
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Safety Notes
iv
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otes on Use
In order to ensure safe operation and to obtain maximum
performance from the unit, observe the cautions listed
below.
DANGE
WARNIN
Always connect the voltage cable 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-circuit there may be a
serious accident.
This unit cannot be used on voltage lines of 500
Vrms. If the voltage exceeds 500 VAC, there will be
a short-circuit accident or an electrocution accident
Be sure to connect the voltage input terminals and
current input terminals correctly. Measurement
which is attempted with the wiring connected
incorrectly may cause damage to the unit or a
short-circuit.
To prevent an electric shock and a short-circuit
accidents, shut off the power to the line to be
measured before connecting the load to the
terminals.
To avoid electric shock when replacing the fuse,
turn the power switch off, disconnect the power
code from the connector, and remove the input
cable from the object to be measured.
M0.5 A/250 V 20 mm×5.2 mm dia.
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Notes on Use
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G
N
v
WARNIN
CAUTIO
Only use fuses of the specified type that is rated for
the specified current and voltage. Using a fuse that
does not meet the specifications or shorting the fuse
holder may cause an accident that might result in
injury or death.
･ Do not store or use the unit where it will be exposed to
direct sunlight, high temperatures, 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.
･ To avoid electric shock, the wiring which is used for
making the connections to the current input terminals
should have sufficient current carrying capacity and
insulation.
･ To avoid damage to the unit, do not short the analog
output terminal and the GP-IB connector terminal and
do not input voltage to them.
･ To avoid damage to the unit, do not subject the
equipment to vibrations or shocks during transport or
handling. Be especially careful to avoid dropping the
equipment.
･ Before using the unit, make sure that the sheathing on
the leads is not damaged and that no bare wire is
exposed. If there is damage, using the unit could
cause electric shock.
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Notes on Use
vi
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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.
･ When a measuring device such as a recorder or voltmeter
is connected to the analog output terminals, there is a
possibility of oscillatioin due to the input capacitance of
the measuring device.
If such oscillation occurs, insert a resistor (100 ohms or
thereabouts) in series between the analog output
terminals and the measuring device.
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Notes on Use
1
1
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1
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Chapter
Overvie
.1 Features
The 3184 is a 3-phase power meter designed to measure
voltage, current, and power in single-or-3-phase circuits.
The meter’s internal circuit converts voltage and current
measurements to true rms value, giving it the capability
to accurately measure the special waveforms produced by
thyristors and other semiconductor switching devices.
The basic instrument is provided with an analog output
terminal, and models are available equipped with and
GP-IB interface (3184-02).
(1) Voltage, current, single-and 3-phase power measurement
capability
(2) Voltage and current quantified as true rms values
(3) Good frequency response characteristics
(4) Minimum metering losses
(5) Overvoltage, overcurrent warning indicators provided
(6) Analog outputs provided for power and selected function
(7) Optional models with GP-IB interface capability available
(8) Lightweight, compact
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Chapter 1 Overview
2
1
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.2 Names and Functions of Parts
Front Panel
Rear Panel
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Chapter 1 Overview
3
e
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POWER switch
Always turn the power switch ON before a measurement.
Allow the instrument approximately 5 minutes of warm-
up.
Display panel
3-1/2 digits LED display with a maximum display
capability of 1999. Measurement unit annunciators are
coupled to function switch operation, with the
measurement value of V
to W, and the unit displayed.
12
At power ON, the display reading is 0000, and an
overrange input is indicated by "1" in the MSD column,
with all other digits blanked. OVER V and OVER A are
the overvoltage and overcurrent warning indicators.
These light when peak-value of the input exceeds the
crest-factor of the meter circuit. The REMOTE lamp is
functional only when the instrument is used in a optional
automatic measurement system, and lights to indicate
that function and range settings are under remote-control.
Function switches (V
12
,V
3
1
32
,W)
,A
,A
Used to select the display function. At power ON, the
non-select state is entered automatically. When selection
is made, the selected function switch LED lights.
Range switches (500V/200V, 20A/2A)
Selects the range for voltage and current measurements.
At power ON, both ranges are set to Lo (indicator OFF).
Range switch Hi Lo changes each time the button is
pressed. The range for power measurements is a
combination of voltage and current range settings,
determined as follows.
V rang
A range
Lo (2 A) 0.2 kW 2kW
Hi (20 A) 2kW 20 kW
Lo (200 V) Hi (500 V)
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Chapter 1 Overview
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