3334
3334-01
Instruction Manual
AC/DC POWER HiTESTER
Sept. 2018 Revised edition 6
3334A981-06 18-09H
EN
Contents
Introduction.................................................................................1
Confirming Package Contents....................................................1
Safety Information......................................................................2
Operating Precautions................................................................4
Chapter 1
Overview___________________________________ 7
1.1 Product Overview and Features .........................................7
1.2 Names and Functions of Parts ............................................8
1.3 Measurement Work Flow ..................................................12
i
Contents
Chapter 2
Measurement Preparations___________________ 15
2.1 Installation & Connection Procedures ...............................15
2.2 Connecting a Connection Cable .......................................16
2.3 Connecting the Power Cord ..............................................21
2.4 Turning the Power On and Off ..........................................21
Chapter 3
Settings and Measurements __________________ 23
3.1 Pre-Operation Inspection ..................................................23
3.2 Setup Procedure ...............................................................24
3.2.1 Selecting an item to be displayed ...........................................24
3.2.2 Selecting Voltage and Current Range ....................................26
3.2.3 Selecting the rectifier type ......................................................29
3.2.4 Displaying average measurement values
(AVG: average) .....................................................................30
3.2.5 Setting the VT or CT ratio .......................................................32
3334A981-06
3.3 Integration .........................................................................35
3.3.1 Setting integration time ...........................................................35
3.3.2 Integration Operation ..............................................................36
3.3.3 Notes on Integration ...............................................................39
3.3.4 Display Format of Integration Value .......................................40
3.4 Analog Output and Waveform Output ...............................41
3.4.1 Analog output .........................................................................42
3.4.2 Waveform output ....................................................................46
ii
Contents
3.5 Other functions .................................................................47
3.5.1 Display hold (Hold) .................................................................47
3.5.2 Peak value and Maximum value hold (Peak Hold) ................48
3.5.3 Disables key operations (key lock) ........................................ 49
3.5.4 Initializing (system reset) ....................................................... 50
3.6 When PEAK OVER, o.r and units flash ............................52
3.6.1 When the PEAK OVER U and PEAK OVER I LEDs go on .... 52
3.6.2 When o.r (over-range) appears ..............................................52
3.6.3 When the unit flashes ............................................................ 53
Chapter 4
RS-232C/ GP-IB Interface_____________________55
4.1 Overview ...........................................................................55
4.2 Connect a cable to the RS-232C
connector or GP-IB connector ..........................................58
4.3 Enter a GP-IB address (3334-01 only) .............................60
4.4 Communication Methods ..................................................61
4.4.1 Message Format ....................................................................62
4.4.2 Output Queue and Input Buffer ..............................................66
4.4.3 Status Byte Register ..............................................................67
4.4.4 Event Registers ..................................................................... 69
4.4.5 Initialization Items .................................................................. 74
4.4.6 Command Execution Time .....................................................75
4.5 Message List .....................................................................76
4.5.1 Standard Commands .............................................................76
4.5.2 Device-Specific Commands ................................................... 77
4.6 Message Reference ..........................................................81
4.6.1 Standard Commands .............................................................82
4.6.2 Device-Specific Commands ................................................... 87
4.6.3 Valid Command According to Condition
(Standard Command) ........................................................108
4.6.4 Valid Commands According to Condition
(Specific Command) .......................................................... 109
4.7 Troubleshooting (Communications) ................................111
4.8 Device Compliance Statement ....................................... 113
Chapter 5
Specifications_____________________________117
5.1 General Specifications ....................................................117
5.2 Basic Specifications ........................................................118
5.3 Functions ........................................................................121
Chapter 6
Maintenance and Service ___________________ 125
6.1 Troubleshooting ..............................................................125
6.2 Error Indication ................................................................127
6.3 Cleaning ..........................................................................127
Chapter 7
Rack Mounting ____________________________ 129
7.1 Installation Procedure .....................................................129
7.2 Dimensional Diagram ......................................................131
Index _________________________________ Index1
iii
Contents
iv
Contents
Introduction
Instruction Manual................................ 1
Power Cord........ ... .... ... ... ... .... ................ 1
This instrument: Model 3334 or 3334-01
Power HiTester
(3334-01: Model with GP-IB interface)
Confirm that these contents are provided.
Accessories
When you receive the instrument, inspect it carefully to ensure that no damage occurred during
shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate ac cording to the s pecifications, contact your dealer or Hioki representative.
Options
Other
•
Model 9266-01 Outlet Code
• A number 3 Phillips screwdriver
Interface Connection Cables
•
Model 9637 RS-232C Cable (1.8 m, 9-pin to 9-pin, Cross cable)
• Model 9638 RS-232C Cable (1.8 m, 9-pin to 25-pin, Cross cable)
(3334-01 only)
• Model 9151-02 GP-IB Connector Cable (2 m)
• Model 9151-04 GP-IB Connector Cable (4 m)
Thank you for purchasing the Hioki Model 3334, 3334-01 AC/DC Power HiT-
ester
. To obtain maximum performance from the instrument, please read
this manual carefully, and keep it handy for future reference.
In this document, the “instrument” means the Model 3334 or 3334-01 AC/DC
Power HiTester.
Confirming Package Contents
1
Introduction
2
Safety Information
Safety Information
This instrument is designed to comply with IEC 61010 Safety Standards,
and has been thoroughly tested for safet y prior to shipment. Ho wever, mishandling during use could result in injury or death, as well as damage to
the instrument. Using the instrument in a way not described in this manual
may negate the provided safety features. Be certain that you understand
the instructions and precautions in the manual before use. We disclaim
any responsibility for accidents or injuries not r esulting dire ctly from p roduct defects.
This manual contains information and warnings essential for safe operation of
the instrument and for maintaining it in safe operating condition. Before using it,
be sure to carefully read the following safety precautions.
Safety Symbols
In the manual, the symbol indicates particularly important information
that the user should read before using the instrument.
The symbol printed on the instrument indicates that the user should refer
to a corresponding topic in the manual (marked with the symbol) before
using the relevant function.
Indicates a grounding terminal.
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
The following symbols in this manual indicate the relative importance of cautions
and warnings.
Indicates that incorrect operation presents an extreme hazard that
could result in serious injury or death to the user.
Indicates that incorrect operation presents a significant hazard that
could result in serious injury or death to the user.
Indicates that incorrect operation presents a possibility of injury to the
user or damage to the instrument.
Indicates advisory items related to performance or correct operation
of the instrument.
Other symbols
( p. )
*
SET
(Bold)
Indicates a prohibited action.
Indicates the location of reference information.
Indicates quick references for operation and remedies for troubleshooting.
Indicates that descriptive information is provided below.
Bold alphanumeric characters in this manual indicate key labels.
3
Safety Information
Accuracy We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (dig-
it) values, with the following meanings:
• f.s. (maximum display value or scale length)
The maximum displayable value or scale length. This is usually the name of the currently selected range.
• 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-significant digit.
Measurement categories
This instrument complies with CAT III safety requirements.
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.
CAT II
: Primary electrical circuits in equipment connected to an AC electrical
outlet by a power cord (portable tools, household appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.
CAT III
CAT IV
Using a measurement instrument in an environment designated with a highernumbered category than that for which the instrument is rated could result in a
severe accident, and must be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV
measurement applications could result in a severe accident, and must be carefully avoided.
: Primary electrical circuits of heavy equipment (fixed installations) con-
nected directly to the distribution panel, and feeders from the distribution
panel to outlets.
:The circuit from the service drop to the service entrance, and to the
power meter and primary overcurrent protection instrument (distribution
panel).
4
Use the instrument with the stand extended.
See "How to use the stand" (
p.11)
Operating Precautions
Operating Precautions
Follow these precautions to ensure safe operation and to obtain the full benefits
of the various functions.
Before Use
• Before using the instrument 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.
• Before using the instrument, m ake sure that the insulatio n on the connection
cable is undamaged and that no bare conductors are exposed. A damaged
product could cause an electric shock or short circuits and should be replaced
with an undamaged product.
Instrument Installation
Operating temperature and humidity: 0 to 40°C at 80% RH or less (non-condensating)
Temperature and hu midity range for guarantee d accuracy:
23±5°C, 80%RH or less
Avoid the following locations that could cause an accident or damage
to the instrument.
Exposed to direct sunlight
Exposed to high temperature
Exposed to liquids
Exposed to high humidity or condensation
Exposed to high levels of particulate dust
In the presence of corrosive or explosive
gases
Exposed to strong
electromagnetic fields
Near electromagnetic
radiators
Subject to vibration
Installation
• Do not install the instrument with any side except the bottom facing down.
• Do not install the product on an unstable or un level surface
To prevent electric shocks and personal injury, do not directly touch the
exposed metallic parts of the input terminals and other wiring materials
when the measurement lines connected to the input terminals at the rear
panel of the instrument are live lines. In addition, do not allow them to
touch or come near metallic parts.
lTo meet the measurement accuracy, ensure the surrounding temperature of the
instrument does not exceed
23±5°C
by keeping it away from heat sources.
Handling the Instrument
To avoid electric shock, do not remove the instrument's case. The internal
components of the instrument carry high voltages and may become very
hot during operation.
• Do not allow the instrument to get wet, and do not take measurements
with wet hands. This may cause an electric shock.
• Never modify the instrument. Only Hioki service engineers should disas-
semble or repair the instrument. Failure to observe these precautions
may result in fire, electric shock, or injury.
To avoid damage to the instrument, protect it from physical shock when transporting and handling. Be especially careful to avoid physical shock from dropping.
5
Operating Precautions
Handling the cables
Before Connecting
This instrument may cause interference if used in residential areas. Such use
must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interfe rence to the reception of radio and television
broadcasts.
• Avoid stepping on or pinching cables, which could damage the cable insulation.
• To avoid breaking the cables, do not bend or pull them.
• To avoid damaging the power cord, grasp the plug, not the cord, when unplugging it from the power outlet.
• Keep the cables well away from heat sources, as bare conductors could be
exposed if the insulation melts.
• Before turning the instrument on, make sure the supply voltage matches
that indicated on the its power connector. Connection to an improper
supply voltage may damage the ins trument an d present an e lectrical h azard.
• To avoid electrical accidents and to maintain the safety specifications of
this instrument, connect the power cord provided only to a 3-contact
(two-conductor + ground) outlet.
See Connection procedure:"2.3 Connecting the Power Cord"( p.21)
6
Operating Precautions
Input and Measurement Precautions
• The maximum input voltage and current is 300 V, 30 A. Attempting to
measure voltage and current in excess of the maximum input could
destroy the instrument and result in personal injury or death.
• The maximum rated voltage between input terminals and gr ound is 300 V.
Attempting to measure voltages exceeding 300V w ith respect to ground
could damage the instrument and result in personal injury.
• 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.
When connecting wires,
Observe the following to avoid electric shock and short circuits.
• Turn off the power to lines to be measured before making connections to
terminals to be measured and turning on the instrument.
• Be sure to connect the voltage input and current input terminals cor-
rectly. An incorrect connection could damage or short circuit this instrument.
• Make sure no connecting wires are routed so they short circuit input
voltage terminals.
When the instrument gives off smoke, a strange odor or
makes a strange noise,
Stop measuring immediately. Then perform the following procedure. Continued use under these conditions could result in fire and electric shock.
1. Turn the instrument power switch off.
2. Disconnect the power cord from the wall outlet.
3. Turn off the line to be measured and remove any connections.
4. Contact your dealer (agent) or nearest sales office.
• For safety reasons, disconnect the power cord when the instrument is not used
and before connecting it to a device to be tested.
• To avoid damage to the instrument, do not short circuit or apply an input voltage to output terminals.
• Correct measurement ma y 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.
To ensure measurements are accurate,
• Warm up the instrument 3 minutes or more before use.
• Pay attention to heat dissipation to maintain accurate measurements.
Example: Keep the instrument away from heat sources, make sure there is
enough free space around the instrument and install a fan when the unit is
mounted in a rack.
• The instrument should be calibrated once a year.
1.1 Product Overview and Features
Display voltage, current, active power,
apparent power, power factor, frequency,
current integration, active power integration, peak voltage value and peak current
value
The instrument can simultaneously display up to four measurements. The user can switch to display the desired value during measurement.
Input data is displayed within 0.4 s.
See: "3.2.1 Selecting an item to be displayed"(
p.24)
Display averages for measurements that fluctuate substantially
Set the average times (AVG) of a measurement value to display an average value.
See: "3.2.4 Displaying average mea-
surement values (AVG: average)"(
p.30)
Set an external VT (PT)
CT ratio
When the voltage or current exceeds the
maximum rated input for this instrument,
use an external VT (PT) or CT device and
set the VT or CT ratio to read measurement values directly.
See: "2.2 Connecting a Connection
Cable"(
p.16), "3.2.5 Setting the
VT or CT ratio"(
p.32)
Perform the following operations
Check the power consumption and current
of an electrical appliance
Integrate current and active power
Import measurement data into the control-
ler
Connect a DMM or recorder to watch ana-
log output or waveform output.
Connect this instrument to a controller with
standard RS-232C capability for data acquisition and remote control
This instrument can be connected to a controller with the
RS-232C or GP-IB (3334-01 only) interface to enable control
of the device and acquisition of measurement data.
See: "4.2 Connect a cable to the RS-232C
connector or GP-IB connector"(
p.58)
Level output of measurement values
(Analog output)
The level of a specified parameter (voltage, current, active power,
and one of current integration, active power integration, apparent
power or power factor) can be converted to ±2 V f.s. DC at the analog
output terminal. This output is isolated from voltage and current inputs.
From this terminal, long-term measurement changes can be re-
corded by combining with DMMs, recorders, data loggers and other
devices.
See: "3.4.1 Analog output"(
p.42)
Waveform output
Instantaneous voltage, current and power waveforms can be converted to ±1 V f.s. at the waveform output terminal. This output is isolated from
voltage and current inputs. From this terminal, measured input waveforms can be observed with an oscilloscope.
See: "3.4.2 Waveform output"(
p.46)
The 3334 and 3334-01 AC/DC Powe r HiTesters are single-phas e wattmeters suited to meas urements
of household electrical appliances and battery powered devices. One unit enables measurements of
voltage, current, active power, apparent power, power factor, frequency, current integration, active
power integration, peak voltage value and peak current value. All measurement data is simultaneously
displayed. The instrument complies with IEC61010-1 safety standard and guarantees a basic accuracy
of ±0.1%rdg. ±0.1%f.s. for a period of one year. It guarantees a basic accuracy of ±0.1%rdg. ±0.2%f.s.
for a period of three years.
V olt age and current
input terminals with protective cover att ac hed
The instrument can handle inputs of up to 300 V, 30 A.
See: "2.2 Connecting a Con-
nection Cable"(
p.16)
The protective cover prevents
personnel from inadvertently
touching the terminals.
The voltage input terminals are
insulated from
the current input terminals.
Overview Chapter 1
1.1 Product Overview and Features
7
8
PEAK OVER LED
PEAK OVER U (voltage over-range warning)
Lights when the input peak voltage value exceeds
±425 V or ±300% of the voltage range.
PEAK OVER I
(current over-range warning)
Lights when the input peak current value exceeds
±54.0 A or ±300% of the current range.
POWER Switch
Turns the instrument on and off ( p.21)
( : Power On : Power Off )
Display (LED)( p.9)
Screen Display
Operating Keys
( p.10)
Operating key LEDs
KEY LOCK Lights when operating keys a re
invalid (in key lock state).
To cancel lock:
Hold down the SHIFT key and
press the PAGE (KEY LOCK)*
key( p.49)
REMOTE Lights when this instrument is con-
trolled via an interface (in remote
control state).
The operating keys are disabled in
this state.
To cancel remote control:
Press the SHIFT (LOCAL)* key.
See "3.6 When PEAK OVER, o.r and units flash"( p.52)
*PAGE (KEY LOCK), SHIFT (LOCAL)
As shown above, use of the functions indicated below the operating keys (key legends in blue or LOCAL) are given in parentheses.
Front Panel
Integrator LED
INTEGRATOR
Lights: Integration execution state
Flashes: Integration
stopped state
Goes out: Integration reset state
Rectifier LED
RECTIFIER AC+DC
DC and AC LED light
when the rectifier type is
AC+DC.
RECTIFIER DC
DC LED lights when the
rectifier type is DC.
RECTIFIER AC
AC LED lights when the
rectifier type is AC.
Status LED
Lights when any of the following items is set to
something other than 1 (default value).
AVG Sets average times(
p.30)
VT Sets VT ratio(
p.32)
CT Sets CT ratio(
p.32)
Operating key LEDs
HOLD
(PEAK
HOLD)
Lights when the HOLD key is pressed to
lock a display value (in display hold
state).
To cancel display hold:
Press the HOLD key again. (
p.47)
Flashes when the SHIFT key is pressed
and then the HOLD key is pressed to
lock a peak value and a maximum value
(in peak hold state).
To cancel peak value hold:
Press the SHIFT key again, and then
press the HOLD key. (
p.48)
SHIFT Lights when the SHIFT key is depressed
and the functions in blue under the keys
are available.
To cancel the SHIFT function:
Press the SHIFT key again.
Setting screen LED
SET
Lights when the Setting screen is
displayed (after pressing the SET
key)
1.2 Names and Functions of Parts
1.2 Names and Functions of Parts
9
m:10
-3
k: 10
3
M:10
6
Selected voltage and
current range
lights(
p.26)
Display items( p.24)
Display item selected using the
a, b, c or d keys lights.
The a, b, c and d keys select dif-
ferent items
V Voltage (U)
A Current (I)
W Active power (P)
VA Apparent power (S)
PF Power ratio (
)
Hz
Frequency
Ah+
Positive current
integration
Ah-
Negative current
integration
Ah
Total current integration
Wh+
Positive active power
integration
Wh-
Negative active power
integration
Wh
Total active power
integration
Vpk
Peak voltage value
Apk
Peak current value
TIME
Integration time
Setting screen
Measurement screen
Setting items
Lights setting item selected using
the a, b, c or d keys or
after opening the setting screen
with the SET key.
AVG Sets average times(
p.30)
VT Sets VT ratio( p.32)
CT Sets CT ratio(
p.32)
3334-01 only
GP-IB address setting
(
p.60)
Press PAGE key to switch
setting items.
TIME
Sets integration time
(
p.35)
Sets D/A output item
(
p.43)
Display
Other indications
Error indication
See "6.2 Error Indication"(
p.127)
over-range
See "3.6 When PEAK OVER, o.r and units
flash"(
p.52)
Flashing unit
Indicates that an averaged value
(o.r.) is included
See "3.6 When PEAK OVER, o.r and units
flash"(
p.52)
Minus sign
Measurement
value
1.2 Names and Functions of Parts
10
Operation Keys
Selecting display items or setting items.
Display
area
Volt-
age
V
Cur-
rent
A
Active
power
W
Apparent
power
VA
Power
factor
PF
FrequencyHzPositive
current
integration
Ah+
Negative
current
integration
Ah-
Total
current
integration
Ah
a
b
c
d
Display
area
Positive
active power
integration
Wh+
Negative
active power
integration
Wh-
Total
active power
integration
Wh
Peak
voltage
value
Vpk
Peak
current
value
Apk
Integra-
tion
time
TIME
a
b
c
d
In the setting screen
Press the SET key to open the setting
screen and select setting items. (Or
use the NEXT key, BACK key to select
setting items.)
Integration
START/
STOP
Starts or stops integration.
To reset the integration value (DATA
RESET):
Hold down the SHIFT key and press
this key to use this function.
Selecting rectifier type
DC/AC
Changes the rectifier type.
Default setting: AC+DC
Sequentially selects DC, AC and
AC+DC with repeated presses.
Holding display values, peak values and
maximum values
Enabling and disabling operating keys
SHIFT
Makes available the function printed
in blue below the keys.
HOLD
Holds display values. (display hold
state)
To cancel the display HOLD function:
Press the
HOLD key again.
HOLD
(PEAK HOLD)
Holds peak values and maximum values. (peak hold state)
Hold down the
SHIFT key and press
this key to use this function.
To cancel the peak HOLD function:
Press the
SHIFT key again, and
press the
HOLD key.
PAGE
(KEY LOCK)
Disables operating keys. (KEY LOCK
state)
Hold down the
SHIFT key and press
this key to use this function.
To cancel the KEY LOCK function:
Hold down the
SHIFT key again and
press this key to cancel this function.
SHIFT
(LOCAL)
Cancels a remote control state engaged via an interface.
Press the
SHIFT(LOCAL) key once
to set the instrument to local status.
Making settings in the setting screen
SET Opens the setting screen.
Press again to exit the screen.
BACK Moves to the previous setting position.
NEXT Moves to the next setting position.
UP Changes set values and increments numeric values
DOWN Changes set values and decrements numeric val-
ues.
PAGE Changes the Setting screen page.
Changes voltage and current range
Lights selected range.
Measurement range
See "Effective measurement range" (
p.120)
15V
(AUTO)
Sets the voltage range to auto-range.
Hold down the SHIFT key and press this
key to use this function.
15V to 300V
Sets respective range.
100mA
(AUTO)
Sets the current range to auto-range.
Hold down the SHIFT key and press this
key to use this function.
100mA to 30A
Sets respective range.
: Available, : Not Available
In the measurement
screen (normal display)
Select display items
(V, A, W, VA, PF, Hz,
Ah, Ah+, Ah-, Wh,
Wh+, Wh-, Vpk, Apk
and TIME) to be displayed in display areas a, b, c and d. The
items that can be displayed depend on
the display area
1.2 Names and Functions of Parts
11
ANALOG
U
Analog output for voltage.
I
Analog output for current.
P
Analog output for active power.
D/A
Analog output of either current integration, active
power integration, apparent power or power factor.
(
p.43)
ANALOG/WAVEFORM OUTPUT terminal
Outputs the following voltage values from the connected terminal. ( p.41)
WAVEFORM
u
Waveform output for instantaneous voltage.
i
Waveform output for instantaneous current.
p
Waveform output for instantaneous power.
GND
Ground terminal
Protective cover
The instrument should be used with a protective cover to prevent personnel from inadvertently touching the terminals.
Make sure that no voltage is applied to a line
to be measured before installing and removing the protective cover. (
p.16)
The 3334-01 is illustrated below.
The 3334-01 model comes with a GP-IB interface.
Except for the GP-IB connector, the 3334 and 3334-01 are identical
Current input terminal (I)
Connect a current output to
this input. (
p.16)
V oltage input t erminal (U)
Connect a voltage output to
this input. (
p.16)
Rear Panel
Power Inlet
Connect the supplied power cord here
( p.21)
RS-232C connector
Connect an RS-232C interface communication cable.
(
p.58)
GP-IB connector
(3334-01 only)
Connect a GP-IB interface
communication cable
.(
p.58)
Do not apply heavy downward pressure with the
stand extended. The stand could be damaged.
Stand
Foot
When using the stand
Extend the stand until it clicks into place.
Make sure to extend both legs of the stand.
Collapsing the stand
Fold in the stand until it clicks into place.
How to use the stand
This instrument can be rack mounted.
See "Chapter 7 Rack Mounting"(
p.129)
Parts removed from this instrument should be
stored in a safe place to enable future reuse
Screws
Bottom Panel
1.2 Names and Functions of Parts
This instrument includes a key processing program used in production and for
checking (for example, to invoke a mode for making adjustments). Should a key
operation open a screen not described in this manual, immediately shut down
the instrument and power it up again.
12
Check!
Confirm whether the line to be measured is turned off.
Confirm whether the instrument is turned off and the
power cord is disconnected.
See ( p.4)
Check!
Confirm whether the instrument is connected to the
secondary side of the breaker.
Confirm that the voltage in the wiring does not exceed
300 V.
Confirm that the voltage to be measured will not
exceed 300 V, and current will not exceed 30 A.
If the voltage is exceeded use VT or CT.
Confirm that the wiring connected to the voltage and
current input terminals is made of an appropriate material
Use crimp contacts (terminal screw: M6) with insulating coating Also make sure that the materials used
have sufficient withstand voltage and current capacity.
Confirm that the wiring is not short-circuited
Confirm that the input terminals are not loose
Confirm that no connection mistakes have been made
See Connection cable ( p.16)
See Using analog output (
p.42) or wave-
form output (
p.46)
See Communications via RS-232C or GP-IB
interface (
p.55)
See Power cord (
p.21)
(Warm up the instrument for at
least 3 minutes.)
See ( p.21)
1.3 Measurement Work Flow
1.3 Measurement Work Flow
1 Installation, Connection and Turning the Power On
Installation
Connections
Connect a cable to the line to be measured and connect the power cord of the instrument
Turn the power on
Before powering up, make one more check to confirm
that all connections are correct
When the initial screen appears, input values are displayed
according to current settings.
13
Default setting:
a: V
b: A
c: W
d: PF
See ( p.24)
Voltage range
Current range
Initial setting: 300V
: 30 A
See ( p.26)
See ( p.29)
Make the following settings when required.
See ( p.30)
See ( p.32)
See ( p.32)
See ( p.35)
1.3 Measurement Work Flow
2 Make Instrument Settings (settings can be changed
during measuring)
Select an item to be displayed
Select voltage and current range
Select items to be displayed by , , and
Select up to four items of voltage (V), current (A), active
power (W), apparent power (VA) or power factor (PF), frequency (Hz), current integration (Ah), active power integration (Wh), peak voltage value (Vpk) and peak current
value (Apk) or Integration time (TIME).
Select a voltage range between 15 V to 300 V.
Select a current range between 100 mA to 30 A.
Press the SHIFT key, and then press the 15V(AUTO) key
or 100mA(AUTO) key when the range is not known.
The range is automatically changed. (Auto range)
Select the rectifier type
When the displayed value fluctuates, display an average value.
Set the display average times
When the voltage exceeds 300 V, select VT (PT) to measure.
Set the VT ratio
When the voltage exceeds 30 A, select CT to measure
When integrating
Set the CT ratio
Set the integration time
14
See ( p.43)
See ( p.60)
Example:
Voltage
Current
Active power
Apparent power
Holding display values
( p.47)
Holding peak values
( p.48)
Regarding measurement values
• Apparent power (S) and power factor (
) displayed by this instrument are values calculated from measured voltage (U), current (I) and active power (P). For information on the calculation method used, refer
to"5.2 Basic Specifications"( p.120).A measuring instrument using a different operating principle or a
different calculation method may therefore prod uc e different value s.
• Voltage and current values that are less than 0.5%
of their measurement ranges, and peak voltage and
peak current values that are less than 0.3%
of their peak ranges, are suppressed (forced to display as
zero).
• Deviations may occur in the measurement of high-frequency common mode voltages
• This instrument is designed to handle DC and frequencies between 45 Hz to 5 kHz, and cannot measure
frequencies outside this range.
• Measureable peak voltage and current values are for DC input and AC input between 45 Hz and 1 kHz.
DC peak values and AC values at frequencies outside of the range 45 Hz to 1 kHz cannot be measured
correctly.
• The displayed values of voltage and current measurements at different frequencies may be scattered.
1.3 Measurement Work Flow
When utilizing analog output
Select a D/A output item
Using the GP-IB interface (3334-01 only)
Enter a GP-IB address
3 Starting measurements
T urning on the power to a line to be
measured
Measuring and outputting
4 Ending measurements
Turn the power off
See ( p.21)
The measured values appear
The voltage range, current range and items to be
displayed can be changed also during measurements
Disconnect all cables from the device under test
before turning the power off
15
1
2
5
6
7
3
4
Rear panel
Install this instrument ( p.4)
Remove the protective
covers
Connect connection cables
to the voltage and current
input terminals. (
p.16)
Attach the protective
covers
Turn the power on
(
p.21)
Turn on the power to
the line to be measured
When finished measuring, disconnect the cables from
the measurement object(s), and turn the power off.
Using an interface
Connect a connection
cable to the RS-232C
or GP-IB connector
(3334-01) (
p.58)
Using analog output or
waveform output
Connect a cable to the ANALOG/WAVEFORM OUTPUT
terminal ( p.41)
Connect the power cord
(
p.21)
2.1 Installation & Connection Procedures
Measurement
Prep arations Chapter 2
2.1 Installation & Connection Procedures
Be sure to read the "Operating Precautions" ( p.4) before installing and connecting
this instrument.
16
2.2 Connecting a Connection Cable
2.2 Connecting a Connection Cable
Please read the following before making connections
• The maximum input voltage and current is 300 V, 30 A.
Attempting to measure voltage in excess of the maximum input could
destroy the instrument and result in personal injury or death.
• The maximum rated voltage between input terminals and gr ound is 300V.
Attempting to measure voltages exceeding 300V w ith respect to ground
could damage the instrument and result in personal injury.
• This instrument 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.
• Confirm that no terminal is loose.
A connection that becomes disconnected could cause a short circuit or
electrical shock. A loose connection will increase the insulation resistance resulting in heat generation, burn damages or fire.
(Use a torque of 3Nm to secure the input terminals.)
Observe the following to avoid electric shock and short circuits.
• Turn off the power to lines to be measured before making connections to
terminals to be measured and before turning on the instrument
• Be sure to connect the voltage input and current input terminals cor-
rectly. An incorrect connection could damage or short circuit this instrument
• Make sure no connecting wires are routed so they short circuit input
voltage terminals
• Do not move cables around unnecessarily as terminals may become
loose.
Before turning on the power to the line to be measured
Turn on this instrument before turning on the power to the line to be measured. Confirm that no errors are indicated and then turn on the power to
the line to be measured.
Powering up the line to be measured before this instrument is turned on
may damage the instrument or generate an error when it is powered up
See "2.4 Turning the Power On and Off"( p.21), "6.2 Error Indication"( p.127)
17
Power supply
side
Load side
2.2 Connecting a Connection Cable
Using an external VT (PT) or CT device
Use an external VT (PT) or CT device to for measurements of a device under
test whose voltage exceeds the measurement range of this device. By setting
the VT or CT ratio, you can directly read primary side input values
See "3.2.5 Setting the VT or CT ratio"( p.32)
To prevent electrical shock and personnel injury, do not touch any input
terminals on the VT (PT), CT or the instrument when they are in operation.
• Do not short circuit the secondary side when using an external VT (PT)
device
Applying a voltage to the primary side when the secondary side is shortcircuited will result in the generation of a high current on the secondary
side that could lead to burn damages and fire.
• Do not open the secondary side when using an external CT device.
Applying current to the primary side when open will generate high current in the secondary side and could pose serious danger
• Note that a phase difference in the external VT (PT) or CT device may cause
substantial deviations in current measurements.
Use a VT (PT) or CT device with a minimal phase difference in the frequency
bandwidth to ensure accurate measurement results.
• For reasons of safety, connect the secondary side of a VT (PT) and CT device
to ground. (See figure below.)
For other safety precautions, refer to "Operating Precautions" ( p.4)
For accurate measurements:
• Since polarity is an important factor in power measurements, make sure that
voltage and current inputs are correctly connected. The instrument will not
yield accurate measurement results when incorrectly connected.
• Make sure that power lines are routed away from the instrument as the external electromagnetic fields they produce could have a negative effect on operation.
Wiring material (for voltage and current input terminals)
To avoid electric shock and short-circuit accidents, use only solderless
terminals whose wires are properly insulated.
(Screws for voltage and current input connectors: M6)
To prevent electrical shock, make sure that the materials used ha ve sufficient
withstand voltage and current capacity.
18
Make sure that the power to a line to be measured is turned off bef ore
making connections.
Remove the protective covers
Connect the cables to the input terminals.
Attach the protective cover
Attach the cover
properly.
Protective
cover
Tightening torque
for securing input
terminals: 3Nm
1 Use a Phillips screw-
driver to remove the
screw.
2 Secure the screw as
shown in the wiring
diagram.
Screw
Use solderless terminals with a width of
13 mm or less.
Tighten the screws properly
Be sure to use the screws provided with
the input terminals to connect the cables.
Use of other screws may damage the
connector threads, and it may cause of
preventing attachment and disconnection of wires.
Wire
To avoid electric shock and short-circuit accidents, use only insulated terminals.
(Screws for voltage and current input conn ectors: M6)
2.2 Connecting a Connection Cable
Connecting procedure
Please read the Section, "Please read the following before making connections" ( p.16).
Tools required: a number 3 Phillips screwdriver (optional) or a Phillips screw-
1. Connect cables to the voltage and current input terminals.
driver that has a no. 3 size bit
2.2 Connecting a Connection Cable
When the voltage or current for
the line being measured is within
the maximum rated input for this
instrument
When the voltage or current for
the line being measured exceeds
the maximum rated input for this
instrument
Connect the device to the instru-
ment for direct measurement.
Connect a VT (PT) or CT device.
1 2
Method 2: Connect the current input terminals to the loa d side
Method 1: Connect the voltage input terminals to the load side
Connect to the lines to be measured
1
Refer to "Selecting connection method" ( p.20) to select a conne ction
method to minimize wattmeter loss.
Power supply side
Load side
A
V
I
±
±
1
2
3
4
1
2
3
4
A
V
I
U
±
±
1
2
3
4
A
I
1
2
3
4
V
U
±
L
N
U
±
± I
±
1
2
3
4
L
N
U
A
V
L
N
Power supply side
Load side
1
2
3
4
L
N
Power supply side
Load side
1
2
3
4
L
N
Power supply side
Load side
1
2
3
4
L
N
A
B
AB
L
N
L
N
If the instrument is
affected by common
mode voltage, connect
an ammeter as shown
at B to reduce the error.
If the connection will be
maintained after measurement, perform an
inspection ( p.23)
before conducting the
next measurement.
Such an inspection will
help prevent electric
shock and measurement errors from disconnected cables, short
circuits and instrument
failure.
Connect a VT (PT) or CT device
2
Power supply side Load side
2. Connect to the lines to be measured
Use one of the following two methods to make a connection.
19
20
Method 1
Connect the voltage input terminal to the load side.
Method 2
Connect the current input terminal to the load side.
Loss = (input voltage [V])
2
/2.4 [M]
Loss = (input current [A])
2
x10 [m]
Make a power measurement that includes
the loss resulting from the input resistance in the voltage input terminals.
Make a power measurement that includes
the loss resulting from the input resistance in the current input terminals.
Power
Load
±
I
U
±
Current side input
resistance
Voltage side input
resistance
LoadPower
I
±
U
±
Current side
input resistance
Voltage side input
resistance
10 m
10 m
2.4 M
2.4 M
L
N
L
N
Power
Load
I
±
±
U
Current side input
resistance
Voltage side input
resistance
LoadPower
±
I
±
U
Current side input
resistance
Voltage side input
resistance
10 m
10 m
2.4 M
2.4 M
L
N
L
N
2.2 Connecting a Connection Cable
Selecting connection method
Instrument loss in the wattmeter may affect the measurement value depending
on the input level.
Then use method 2 to minimize loss.
Example:
When measuring 100 V, 20 A
Method 1: loss = (100 [V])
Method 2: loss = (20 [A])
Method 1 involves less loss and provides a more accurate measurement.
When measuring 100 V, 50 mA
Method 1: loss = (100 [V])
Method 2: loss = (50 [mA])
Method 2 involves less loss and provides a more accurate measurement.
2
/2.4 [M] = 0.0042 [VA]
2
x10 [m] = 4 [VA]
2
/2.4 [M] = 0.0042 [VA]
2
x10 [m] = 0.000025 [VA]
2.3 Connecting the Power Cord
Rear panel
1. Verify that the instrument’s power switch is
turned off.
2. Confirm that the mains supply voltage
matches the instrument, and connect the
power cord to the power inlet on the instrument.
3. Plug the power cord into the mains outlet.
Turn off the power before disconnecting the power cord.
• Before turning the instrument on, make sure the supply voltage matches
that indicated on the its power connector. Connection to an improper
supply voltage may damage the ins trument an d present an e lectrical h azard.
Rated power supply voltage (100V AC to 240 V AC), rated power supply
frequency (50/60 Hz)
(V oltage fluctuations of ±10% from the rated supply voltage are taken into
account.)
• To avoid electrical accidents and to maintain the safety specifications of
this instrument, connect the power cord provided only to a 3-contact
(two-conductor + ground) outlet.
21
2.3 Connecting the Power Cord
Connection procedure
2.4 Turning the Power On and Off
Check the following again before turning on the power.
• Confirm that the instrument and all peripheral equipment are correctly
connected.
• Confirm that no wires are short-circuiting the voltage input terminals.
A short circuit could lead to electric shock and short circuits.
Turn on the instrument and make sure no errors are indicated before turning on
the power to lines to be measured.
Powering up the line to be measured before this instrument is turned on may
damage the instrument or generate an error when it is powered up.
22
Model no. “3334-01” (or “3334”) and
version no. appear
Self-test
Indicates an error.
See "6.2 Error Indication"( p.127)
Turn the POWER switch on ( | ).
After Power-On
A self-test (instrument diagnostic routine) is performed.
The self-test lights all LEDs and checks model name, version and saved data.
Power On
Error
OK
Normal display
(measurement screen)
Turn the POWER switch off ( ).
When power is turned on again, the display appe ars with the settings that
existed when power was last turned off.
Power Off
2.4 Turning the Power On and Off
Turning Power On
Do not press an operating key during the self-test.
When the power is turned on, the same setting as when the power was last
turned off appears (backup function). When powered up for the first time, the
default settings appear( p.50)
Before Starting Measurement
To obtain precise measurements, provide about 3 minutes warm-up afte r turning
power on.
Turning Power Off
3.1 Pre-Operation Inspection
Do not use if damage or short-circuited, or the screw is loose as
you could receive an electric
shock. Replace the damaged
items. Tighten the screw properly.
Metal Exposed
Screw Is Loose
Is the insulation of the connection cable to be
used damaged, or is bare metal exposed?
Is the input terminal screw loose?
When using connection cables
1
No Metal Exposed
Screw Is Properly Tightened.
Before using the instrument 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.
Peripheral Device Inspection
If damage is evident, request repairs.
Yes
Is damage to the instrument evident?
Instrument Inspection
Turn on the power
Does the self-test screen appear (model no.,
version no.)?
No
2
The power cord may be damaged, or the instrument may be
damaged internally. Request repairs.
Does the measurement screen appear after the
self-test?
No
Yes
The instrument may be damaged
internally. Request repairs.
See "6.2 Error Indication"( p.127)
An error indication
occurs (Err)
Yes
End of inspection
Please read the "Operating Precautions" ( p.4) before use.
Allow the instrument to warm up for 3 minutes
or more after powering up before use.
Turn on the DUT.
Connected cables may be shortcircuited, incorrectly connected
or an internal instrument failure
may have occurred.
Immediately turn the power off and
re-inspect. If the wiring is correct,
turn the instrument in for repair.
No measurement
value appears
Measurement values are incorrect
Settings and
Measurements Chapter 3
For information on measurement work flow, refer to "1.3 Measurement Work
Flow"( p.12)
3.1 Pre-Operation Inspection
23
24
Switching items to display
Default setting:
Display area a: Voltage (V)
Display area b: Current (A)
Display area c: Active power (W)
Display area d: Power factor (PF)
a: V A WVA Ah Wh PF
b: A
Ah+ Ah- Ah Wh+ Wh- Wh W TIME
c: W
Wh+ Wh- Wh Ah+ Ah- Ah Hz PF
d: PF
TIMEV A WVA Vpk Apk
Display sequence
3.2 Setup Procedure
3.2 Setup Procedure
3.2.1 Selecting an item to be displayed
Use the a, b, c and d keys to select items for display areas a, b, c and d.
The items change with each press of the key.
Press the key (a, b, c or d) to select item to be displayed.
Display items
A
Negative
active power
integration
Active
power
W
Wh-
Display
area
Display
area
VoltageVCurrent
a
b
c
d
active power
integration
a
b
c
d
Positive
Wh+
Apparent
power
VA
active power
integration
Power
factor
PF
Total
Wh
: Available, : Not Available
Frequency
Hz
Peak
voltage
value
Vpk
Positive
current
integration
Ah+
Peak
current
value
Apk
Negative
integration
Integration
time
TIME
current
Ah-
Total
current
integration
Ah
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