Hioki PW3335 User manual

XXXX･XXXX XXXXXXXXXX Instruction Manual
600440011
EN
Instruction Manual
PW3335-01,PW3335-02
PW3335-03,PW3335-04
POWER METER
PW3335
Nov. 2015 Revised edition 1
PW3335A981-01 15-11H

Contents
i
1
2
3
4
5
6
7
8
9
10
付
録
索
引
11
12
Contents
Introduction.....................................................1
Confirming Package Contents........................2
Safety Information..........................................3
Operating Precautions....................................5
Chapter 1 Overview 11
1.1 Product Overview ...............................11
1.2 Features .............................................11
1.3 Names and Functions of Parts ...........13
1.4 Measurement Workflow .....................20
Chapter 2 Measurement
Preparations 25
2.1 Installation and Connection Procedures
...........................................................25
2.2 Connecting the Measurement Lines ..26
Connecting the measurement lines ..........27
2.3 Connecting the Power Cord ...............33
2.4 Turning On the Instrument .................34
2.5 Performing Zero-adjustment ..............35
2.6 Activating Power to the Measurement
Lines ..................................................36
2.7 Turning Off the Instrument .................36
Chapter 3 Configuration and
Measurement 37
3.1 Pre-Measurement Inspection .............37
3.2 Configuring Settings ...........................38
3.2.1 Selecting the Current Input Method
........................................................38
3.2.2 Selecting Display Content ...............40
Selecting display parameters ....................40
Selecting the rectifier ................................42
3.2.3 Selecting the Voltage and Current
Ranges ............................................43
Selecting the desired range ......................43
Automatically setting the range
(auto-range operation) ............................. 44
Skipping unnecessary ranges
(range select function) ............................. 46
3.2.4 Setting the Synchronization Source
(SYNC) ............................................48
3.2.5 Setting the Frequency Measurement
Range (Zero-cross filter) ..................50
Significance of changing the zero-cross
threshold level .......................................... 52
Setting the zero-cross filter’s
threshold level .......................................... 53
3.2.6 Setting the Timeout .........................54
3.2.7 Displaying Measured Values as an
Average (AVG: Averaging) ..............56
3.2.8 Setting the VT Ratio and CT Ratio ..58
Setting the VT ratio .................................. 59
Setting the CT ratio .................................. 60
3.3 Integration ..........................................61
Starting integration ................................... 64
Stopping integration ................................. 64
Starting integration while adding to previous
integrated values (additional integration) . 64
Canceling integration (resetting integrated
values) (DATA RESET) ........................... 65
Performing integration after setting an
integration time (timer integration) ........... 65
Enabling auto-range integration ............... 67
Starting and stopping auto-range
integration ................................................ 68
Integration precautions ............................ 69
3.3.1 Integrated Value Display Format .....70
3.4 Viewing Harmonic Measured Values .71
3.4.1 Setting the Synchronization Source 71
3.4.2 Method for Displaying Harmonic
Measurement Parameters ...............71
3.4.3 Setting the Harmonic Analysis Order
Upper Limit ......................................76
3.4.4 About the HRM ERROR lamp .........77
3.5 Performing Synchronized Measurement
with Multiple Instruments ...................78
Connecting 2 instruments (PW3335) with a
synchronization cable .............................. 79
Configuring synchronized measurement . 80
3.6 External Control ..................................82
External control terminal
(EXT.CONTROL) ..................................... 82
Connecting wires to the external control
terminals .................................................. 84
PW3335A981-01

Contents
ii
3.7 Using D/A Output ..............................85
Connecting wires to D/A output terminals 87
3.7.1 Level Output, High-speed Level Output,
and Waveform Output .....................88
Setting the output parameter, rectifier, and
output method for D/A output channels ... 89
Setting D/A output when enabling
auto-range integration .............................. 91
Example uses .......................................... 94
Output voltage of level output .................. 95
Output voltage of waveform output .......... 99
3.8 Using a Current Sensor ....................100
Before connecting a current sensor ....... 101
Connecting a TYPE.1 current sensor .... 102
Connecting a TYPE.2 current sensor .... 102
Setting external current sensor input ..... 104
Using an external CT ............................. 105
3.9 Other Functions ................................106
3.9.1 Fixing Display Values
(Display Hold) ................................106
Activating display hold ........................... 106
Canceling the display hold state ............ 106
3.9.2 Displaying Maximum, and Minimum
Values (MAX/MIN) .........................107
Switching the display among the maximum,
minimum, and instantaneous values ...... 107
Clearing maximum and minimum values 108
3.9.3 Disabling Control Keys (Key Lock) 109
Enabling the key lock state .................... 109
Canceling the key lock state .................. 109
3.9.4 Initializing the Instrument
(System Reset) ..............................110
Factory Settings ..................................... 111
3.10 When warning lamp, o.r, or the
Unit Indicator Flashes .......................112
3.10.1 If the PEAK OVER U or PEAK OVER I
Lamp Lights Up .............................112
3.10.2 If the CURRENT Lamp Flashes .112
3.10.3 When o.r (over-range) Is Displayed 113
3.10.4 When the Unit Indicator Flashes ...114
Chapter 4 Connection to a PC
115
4.1 Configuring and Connecting the
Instrument ........................................116
4.1.1 Using the LAN Interface ................116
Setting the LAN’s IP address ................. 117
Setting the LAN’s subnet mask .............. 118
Setting the LAN’s default gateway .........119
Displaying the LAN’s MAC address ....... 120
Connecting the instrument to a computer
with a LAN cable ....................................121
4.1.2 Using the RS-232C Interface
...................................................... 123
Setting the RS-232C communications
speed .....................................................124
Connecting the RS-232C Cable .............125
4.1.3 Using the GP-IB Interface ............ 127
Connecting the GP-IB Cable ..................128
Setting the GP-IB address ..................... 129
4.2 Operating the Instrument from a PC's
Browser (LAN only) .......................... 130
Operating the instrument remotely .........131
4.3 Canceling the Remote State
(Activating the Local State) .............. 133
Canceling the remote state .................... 133
Chapter 5 Specifications 135
5.1 Environmental and Safety
Specifications ................................... 135
5.2 General Specifications .....................136
5.3 Measurement specifications ............ 138
5.4 Functional Specifications .................154
5.5 Calculation Formulas Specifications 159
Chapter 6 Maintenance and
Service 163
6.1 Trouble Shooting ............................. 164
6.2 Error Indication ................................ 166
Appendix A1
Appendix 1 Detailed Specifications of Mea-
surement Items (Display Items)
................................................A1
Appendix 2 Detailed Specifications of
Output.....................................A2
Appendix 2.1Detailed Specifications of
Level Output ..........................A2
Appendix 2.2Detailed Specifications of

Contents
iii
1
2
3
4
5
6
7
8
9
10
付
録
索
引
11
12
High-speed Level Output .......A3
Appendix 2.3Detailed Specifications of
Waveform Output ...................A3
Appendix 3 Example Accuracy Calculations
................................................A4
Appendix 4 Rack Mounting........................A5
Appendix 5 Dimensional Diagram..............A9
Appendix 6 Terminology..........................A10
Index Index1

Contents
iv

Introduction
1
Thank you for purchasing the HIOKI PW3335, PW3335-01, PW3335-02, PW3335-03, PW3335-04 Power
Meter. To obtain maximum performance from the instrument software, please read this manual first, and keep
it handy for future reference.
The models are classified according to the factory-installed options as follows.
You can check the model number on the rear of the instrument.
See: "Rear" (p.18)
Model PW3335-03 and PW3335-04 can measure relatively high current with the use of HIOKI Clamp on Sen-
sors (clamp sensors), which are option, or current sensors. Hereafter, those sensors are collectively referred
to as "current sensors". Please read the instruction manuals of each sensor for details before using.
The current sensors are classified as either "TYPE.1" or "TYPE.2" according to the output specifications.
Using a TYPE.2 current sensor requires Model 9555-10 Sensor Unit, which is option. Please refer to the
instruction manual of Model 9555-10 for details.
See: "3.8 Using a Current Sensor" (p.100)
Registered trademark
Internet Explorer is registered trademark of Microsoft Corporation in the United States and other countries.
Introduction
Show the model that is equipped with each function
as the icon.
: Installed −: Not installed
Model
Standard
equipment Factory-installed options
LAN RS-232C GP-IB D/A output External current
sensor input
 −−−
−−−
 −−
 −−

PW3335 PW3335-01 PW3335-02 PW3335-03 PW3335-04
PW3335
PW3335-01
PW3335-02
PW3335-03
PW3335-04

Confirming Package Contents
2
When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. In
particular, check the accessories, panel switches, keys, and connectors. If damage is evident, or if it fails to
operate according to the specifications, contact your authorized Hioki distributor or reseller.
Store the packaging in which the instrument was delivered, as you will need it when transporting the instru-
ment.
Instrument and accessories
Confirm that these contents are provided.
Options (sold separately)
The following options are available for the instrument. Contact your authorized Hioki distributor or reseller
when ordering.
Communications and control options
Model 9637 RS-232C Cable (9pin-9pin/ 1.8 m, crossover cable)
Model 9638 RS-232C Cable (9pin-25pin/ 1.8 m, crossover cable)
Model 9642 LAN Cable(5 m, Supplied with Cross-Over Adapter)
Model 9151-02 GP-IB Connector Cable (2 m)
Model 9165 Connection Cord (1.5 m, metal BNC to metal BNC, not CE marked, for the synchronized
measurements)
Current sensor options
Model 9661 Clamp on Sensor (500 A AC)
Model 9669 Clamp on Sensor (1000 A AC)
Model 9660 Clamp on Sensor (100 A AC)
Model CT9667 Flexible Clamp on Sensor (500 A/5000 A AC)
Model 9555-10 Sensor Unit
Model L9217 Connection Cord
Model 9272-10 Clamp on Sensor (20 A/200 A AC)
Model 9277 Universal Clamp on CT (20 A AC/DC)
Model 9278 Universal Clamp on CT (200 A AC/DC)
Model 9279 Universal Clamp on CT (500 A AC/DC)
Model 9709 AC/DC Current Sensor (500 A AC/DC)
Model CT6862 AC/DC Current Sensor (50 A AC/DC)
Model CT6863 AC/DC Current Sensor (200 A AC/DC)
Model CT6865 AC/DC Current Sensor (1000 A AC/DC)
Model CT6841 AC/DC Current Probe (20 A AC/DC)
Model CT6843 AC/DC Current Probe (200 A AC/DC)
Confirming Package Contents
PW3335, PW3335-01, PW3335-02, PW3335-03,
PW3335-04 Power Meter
Instruction manual
Power cord
Voltage and current input terminal safety cover ×2
Safety cover installation screws (M3×6 mm) ×4
Example: PW3335

Safety Information
3
This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for
safety prior to shipment. However, using the instrument in a way not described in this manual may negate the
provided safety features.
Before using the instrument, be certain to carefully read the following safety notes.
Notation
In this manual, the risk seriousness and the hazard levels are classified as follows.
Symbols affixed to the instrument
Safety Information
Mishandling during use could result in injury or death, as well as damage to the instru-
ment. Be certain that you understand the instructions and precautions in the manual
before use.
With regard to the electricity supply, there are risks of electric shock, heat generation,
fire, and arc discharge due to short circuits. If persons unfamiliar with electricity mea-
suring instruments are to use the instrument, another person familiar with such
instruments must supervise operations.
Indicates an imminently hazardous situation that will result in death or serious injury to the operator.
Indicates a potentially hazardous situation that may result in death or serious injury to the operator.
Indicates a potentially hazardous situation that may result in minor or moderate injury to the operator or
damage to the instrument or malfunction.
IMPORTANT Indicates information related to the operation of the instrument or maintenance tasks with which the
operators must be fully familiar.
Indicates a high voltage hazard.
If a particular safety check is not performed or the instrument is mishandled, this may give rise to a haz-
ardous situation; the operator may receive an electric shock, may get burnt or may even be fatally
injured.
Indicates prohibited actions.
Indicates the action which must be performed.
*Additional information is presented below.
Indicates cautions and hazards. When the symbol is printed on the instrument, refer to a corresponding topic in
the Instruction Manual.
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
Indicates a grounding terminal.
Indicates AC (Alternating Current).

Safety Information
4
Symbols for various standards
Other Symbols
Screen display
The screen of this instrument displays characters in the following manner.
Accuracy
We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with the
following meanings:
For example accuracy calculations, see "Appendix 3 Example Accuracy Calculations" (p. A4).
Measurement categories
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various elec-
trical environments, categorized as CAT II to CAT IV, and called measurement categories.
This instrument conforms to the safety requirements for CAT II 1000 V, CAT III 600 V measuring instruments.
Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member
states.
This symbol indicates that the product conforms to regulations set out by the EC Directive.
(p. ) Indicates the location of reference information.
SET
(Boldface) Bold-faced alphanumeric characters in the text indicate characters shown on the operation keys and
display panel.
f.s. (range) 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 val-
ue that causes the digital display to show a "1" as the least-significant digit.
• Using a measuring instrument in an environment designated with a higher-num-
bered category than that for which the instrument is rated could result in a severe
accident, and must be carefully avoided.
• Using a measuring instrument without categories in an environment designated with
the CAT II to CAT IV category could result in a severe accident, and must be carefully
avoided.
CAT II When directly measuring the electrical outlet recepta-
cles of theprimary electrical circuits in equipment con-
nected to an AC electrical outlet by a power cord
(portable tools, household appliances, etc.)
CAT III When measuring the primary electrical circuits of
heavy equipment (fixed installations) connected di-
rectly to the distribution panel, and feeders from the
distribution panel to outlets
CAT IV When measuring the circuit from the service drop to the service entrance, and to the power meter and pri-
mary overcurrent protection device (distributionpanel)

Operating Precautions
5
Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions.
Operating Precautions
Before Use
If the connection cable or the instrument is damaged, there is a risk of electric shock.
Before using the instrument, perform the following inspection.
• Before using the instrument, check that the coating of the connection cables are nei-
ther ripped nor torn and that no metal parts are exposed. Using the instrument under
such conditions could result in electrocution or a short-circuit. Replace the connec-
tion cables with those specified by our company.
• Before using the instrument for the first time, verify that it operates normally to
ensure that no damage occurred during storage or shipping. If you find any damage,
contact your authorized Hioki distributor or reseller.
To measure accurately
• Warm up the instrument for more than 30 minutes before use.
• To maintain sufficient measurement accuracy of the instrument, be sure to help heat radiation.
Example: Keeping away the instrument from a heat, leaving sufficient clearances around the instrument,
installing cooling fans to the rack in which the instrument is mounted, or other measures.

Operating Precautions
6
For more information about the operating temperature and humidity range and the storage temperature and
humidity range, see "Chapter 5 Specifications" (p.135).
Installing
To prevent overheating, be sure to leave the specified clearances around the unit.
• The instrument should be operated only with the bottom downwards.
• Vents must not be obstructed.
Instrument Installation
Avoid the following locations that could cause an accident or damage to the instru-
ment.
• Exposed to direct sunlight or high temperature
• Exposed to corrosive or combustible gases
• Exposed to water, oil, chemicals, or solvents
• Exposed to high humidity or condensation
• Exposed to a strong electromagnetic field or electrostatic charge
• Exposed to high quantities of dust particles
• Near induction heating systems (such as high-frequency induction heating systems
and IH cooking equipment)
• Susceptible to vibration
Ventilation holes for heat radiation are provided on the side and rear panels of the
instrument. Leave sufficient space around the ventilation holes and install the instru-
ment with the holes unobstructed. Installation of the instrument with the ventilation
holes obstructed may cause a malfunction or fire.
Do not place another PW3335 or measuring instrument or other heat-generating
device underneath or on top of this instrument. Doing so may damage the instrument
or cause burns or fire.
• Correct measurement may be impossible in the presence of strong magnetic fields, such as near trans-
formers and high-current conductors, or in the presence of strong electromagnetic fields such as near
radio transmitters.
• Unplugging the power cord kills power to the instrument. Be sure to provide enough unobstructed space to
unplug the power cord immediately in an emergency.
• The instrument can be used with the stands flipped out.(p.19)
• To mount the instrument in a rack, refer to "Appendix 4 Rack Mounting" (p. A5)
50 mm or more
50 mm or more

Operating Precautions
7
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.
• To avoid damage to the instrument, protect it from physical shock when transporting and
handling. Be especially careful to avoid physical shock from dropping.
• After use, always turn OFF the power.
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 interference to the reception of
radio and television broadcasts.
Handling the Cables
If the insulation on a cable melts, the metal conductor may be exposed. Do not use any
cable whose metal conductor is exposed. Doing so could result in electric shock,
burns, or other hazard.
• Do not move wires connected to the voltage input terminals or current input termi-
nals unnecessarily. Doing so may loosen the connection between the wires and ter-
minals, causing the terminals to heat or melt due to increased contact resistance
and posing the risk of an electrical accident or electric shock.
• Do not tie the cables connected to the input terminals in a bundle with the power
supply cord, the communication cables, the external I/O wires, or the current sensor
cables. Doing so may result in a short-circuit, electric shock, or instrument malfunc-
tion.
• 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.

Operating Precautions
8
Connecting, Input and Measurement
• The maximum input voltage is 1000 V DC/AC and the maximum input current to the
current input terminals is 30 A DC/AC.
Attempting to measure a voltage or current in excess of each of the maximum inputs
could destroy the instrument and result in personal injury or death.
• The maximum rated voltage between input terminals and the ground is as follows;
(CAT II) 1000 V DC, 1000 V AC
(CAT III) 600 V DC, 600 V AC
Attempting to measure voltages exceeding this level with respect to ground could
damage the instrument and result in personal injury.
• The external current sensor input terminals are not insulated. The terminals are
exclusive to the optional current sensors. To prevent instrument damage and bodily
injury, do not connect any device other than an optional current sensor.
• To avoid the danger of electric shock, do not input a signal in excess of the ratings
to the external I/O terminals.
• 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.
• To avoid electrical accidents, confirm that all terminals are secure. The increased
resistance of loose connections can lead to overheating and fire.
(Tightening torque of the input terminals: 3 Nm)
Safety covers
• The safety covers play a protective role by preventing contact with the terminals.
Always attach the safety covers before using the instrument.
• Turn off the supply of power to measurement lines before attaching or removing the
safety covers.

Operating Precautions
9
When connecting
Observe the following to avoid electric shock and short circuits.
• Turn off the power to lines to be measured before making connections to input ter-
minals and turning on the instrument.
• When making connections, do not mix up the voltage input terminals (U) and the
current input terminals (I). In particular, do not input a voltage across the current
input terminals (between I and ±). Using the instrument with a faulty wiring will dam-
age the instrument or cause injury.
• Be careful to avoid shorting between the voltage input terminals with the wires.
When abnormalities such as smoke, unusual noise, or unusual odor are
observed
Stop the measurement immediately, and observe the following procedure. Using the
instrument in such a abnormal condition could cause death or injury.
1. Turn off the power to the instrument.
2. Disconnect the power cord from the outlet.
3. Turn off the power to the line to be measured.
Remove the measurement cables.
4. Contact your authorized Hioki distributor or reseller.
When connecting cables to the input terminals, the communication connectors, or the
external I/O terminals, observe the following to avoid electric shock and short circuits.
• Always turn off the power to the instrument and any device to be connected before
making connections.
• Be careful to avoid exceeding the ratings of the input terminals or external control
terminals.
• During operation, a wire becoming dislocated and contacting another conductive
object can be serious hazard. Use the screws to secure the communication connec-
tors.
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 input the voltage to the output terminals. Also do
not short between any terminals.
• When the instrument is turned off, do not apply voltage or current to the instrument. Doing
so may cause the instrument to become hot, resulting in burns or damage to the instru-
ment. (p.36)
• Do not connect or disconnect the current sensor or disconnect or connect the connection
cord from the 9555-10 Sensor Unit while power is being supplied to the instrument or 9555-
10. Doing so may damage the instrument, current sensor, or 9555-10.
• Do not input current to the current sensor when it is not connected to the instrument or
when the instrument and 9555-10 Sensor Unit are turned off. Doing so may damage the
current sensor, instrument, or 9555-10 Sensor Unit.
The instrument and input terminals may become hot when a large voltage or current is input.

Operating Precautions
10
Before Turning Power On
• Before turning the instrument on, make sure the supply voltage matches that indi-
cated on its power connector. Connection to an improper supply voltage may dam-
age the instrument and present an electrical hazard.
• To avoid electrical accidents and to maintain the safety specifications of this instru-
ment, connect the power cord provided only to a 3-contact (two-conductor + ground)
outlet.
See:Connection Methods: "2.3 Connecting the Power Cord" (p.33)
See:
Avoid using an uninterruptible power supply (UPS) or DC/AC inverter with rectangular wave
or pseudo-sine-wave output to power the instrument. Doing so may damage the instrument.

1.1 Product Overview
11
The PW3335 is a power meter that can be used to perform power measurements for single-phase devices
such as battery-driven devices and household electronics.
Thanks to its broad selection of current ranges from 1 mA to 20 A (with an effective measurement range of
10 A to 30 A), it comprises a single-device solution for measuring parameters ranging from standby power
consumption to power consumption during normal operation of devices such as household electronics.
• Accuracy is guaranteed for currents of up to 30 A with direct input.
• (The maximum input current is 30 A, ±100 A peak.)
• An optional current sensor can be used to measure currents in excess of 30 A. (p.100)
• The instrument delivers a high fundamental accuracy of ±0.15% rdg. (at less than 50% of range, ±0.1% rdg.
±0.05% f.s.).
• Over a wide band from DC and 0.1 Hz to 100 kHz, the instrument covers not only the fundamental fre-
quency band for inverter-driven equipment, but also the carrier frequency band.
• Power factor effects are low at ±0.1%f.s. or less (with a internal circuit voltage/current phase difference of
±0.0573°), allowing high-accuracy measurement of active power during low power-factor operation, for
example during no-load testing of transformers and motors.
• The instrument can perform harmonic measurement compliant with the IEC 61000-4-7:2002 international
standard on harmonic measurement methods.
• You can set an upper limit for the analyzed order from the 2nd to 50th order according to the harmonic
measurement standard in use.
• Since processing for functions such as AC+DC (RMS), AC+DC Umn (voltage average value rectified RMS
equivalent), DC (DC component), AC (AC component), FND (fundamental wave component), and har-
monic measurement as well as integration measurement can be performed internally and in parallel, it is
possible to obtain simultaneous measured values simply by switching the display.
Overview Chapter 1
1.1 Product Overview
1.2 Features
Guaranteed accuracy up to 30 A with direct input
High-accuracy, wide-band performance
Standard harmonic measurement function compliant with
IEC 61000-4-7:2002 (p.71)
Extensive measurement functionality, standard

1.2 Features
12
• The PW3335 can generate level (analog) output for each cycle of an input voltage or input current. Addi-
tionally, The active power level can be output for each cycle for the voltage or current assigned to the syn-
chronization source.
• Variations over extended periods of time can be recorded by using the instrument in conjunction with equip-
ment such as a recorder or data logger using level output (updated every 200 ms) to measure parameters
such as voltage, current, and active power.
• Safe, insulated waveforms can be observed using waveform output (equivalent to a sampling rate of
approximately 700 kHz) instantaneous voltage, instantaneous current, and instantaneous power.
• You can control the instrument or capture data from it using a computer by using the LAN interface (stan-
dard) or RS-232C interface (excluding PW3335-01). (You can also communicate with a computer over USB
by using a commercially available USB serial [RS232-C] conversion cable.)
• The instrument is also available with a GP-IB interface, which is essential for system development.
( )
• Simultaneous measurement can be performed by connecting two instruments with an optional BNC cable.
• Calculations, display updates, data updates, integration control, display hold timing, zero-adjustment, and
key lock operation of the instrument set as the slave (IN setting) are matched to the master instrument
(OUT setting).
• Up to eight instruments can perform simultaneous measurement, including the PW3336 and the PW3337
series of power meters.
High-speed D/A output to capture harsh load variations (p.85)
PW3335-02 PW3335-04
Building a system with 3 interfaces (p.115)
PW3335-01 PW3335-04
Synchronized control function with support for measurement of mul-
tiple circuits (p.78)

1.3 Names and Functions of Parts
13
1.3 Names and Functions of Parts
• The shift state is automatically canceled after Approx. 10 seconds. When the RECTIFIER key is pressed,
the shift state is canceled after Approx. 2 seconds.
• If key operation causes a message or indication that is not described in this manual to be displayed,
immediately cycle the instrument’s power.
POWER switch (p.34)
Turns the instrument on and off.
Warning lamps (p.17)
CURRENT ●
PEAK OVER I
AUTO and B lamps (p.16)
AUTO
B
Current range (p.43)
Function setting status lamps (p.16)
Light up to indicate activated functions.
Warning lamp (p.17)
PEAK OVER U
AUTO lamp (p.16)
AUTO
Voltage range (p.43)
Front Panel Example:
PW3335-04
Parameter keys (p.14)
Switch display parameters.
RECTIFIER (p.42)
Switches the rectifier in the shift state.
Display
Switches between measured
values and setting values.
Error lamps
(p.17)
Function setting
keys (p.17)
Configure functions.
HRM (ORDER SEL)
Harmonic display (switch among level, content percentage, and
normal display) (Choose the order you wish to display in the shift
state.)
HOLD (MAX/ MIN)
Holds display values (switches between maximum and minimum
values in the shift state).
SHIFT (EXIT/ LOCAL)
Activates the SHIFT state (the lamp will light up while in the SHIFT
state). (p.14)
(Switches from settings mode to the normal measurement state
and from the remote state to the local state.)
START/STOP (DATA RESET)
Starts/stops integration (resets integrated values in the shift state).
Function setting status lamps (p.16)
Light up to indicate when settings differ from
default settings.

1.3 Names and Functions of Parts
14
Activates the SHIFT state
Display parameters
Press to light up the blue lamp before setting functions shown in blue underneath t
keys.
Pressing on the first row, on the second row, on the third row, or on the fourth row of the measured
value display switches the display parameter, causing the selected display parameter to light up.
VVoltage (U)
A Current (I)
WActive power (P)
VA Apparent power (S)
var Reactive power (Q)
PF Power factor ()
°Phase angle (φ)
V Hz Voltage frequency (f)
A Hz Current frequency (f)
Ah + Positive current integration
Ah - Negative current integration
Ah Current integration sum
Wh + Positive active power integration
Wh - Negative active power integration
Wh Active power integration sum
TIME Integration time
V pk Voltage waveform peak value (Upk)
A pk Current waveform peak value (Ipk)
CF V Voltage crest factor (Ucf)
CF A Current crest factor (Icf)
MCR Maximum current ratio
T.AV A Time average current (T.AV I)
T.AV W Time average active power (T.AV P)
RF V % Voltage ripple rate (Urf)
RF A % Current ripple rate (Irf)
THD V % Total harmonic voltage distortion (Uthd)
THD A % Total harmonic current distortion (Ithd)
HRM V LEVEL Harmonic voltage RMS value (Uk)
HRM A LEVEL Harmonic current RMS value (Ik)
HRM W LEVEL Harmonic active power (Pk)
HRM V % HD% Harmonic voltage content percentage
(UHDk)
HRM A % HD% Harmonic current content percentage
(IHDk)
HRM W % HD% Harmonic active power content per-
centage (PHDk)