Electronic
Electronic Load
Load

P L Z - 4 W H

S E R I E S

Multi-functional Electronic Load

PLZ-4WH Series

Maximum operating voltage: 650 V
165 W, 330 W, 1000 W: 3 types
With connecting boosters (1000 W type exclusive), maximum of 9 kW/450 A
Operating mode for constant current, constant resistance, constant voltage, constant power,
constant current + constant voltage, and constant resistance + constant voltage
Sequence function (up to 1024 steps)
Voltage monitor terminal for monitoring high voltage
Equipped as standard with USB 2.0, GPIB, and RS232C

High-Voltage Electronic Load

650V

All new design with upgraded performance !
For EV and HEV high-voltage converters.
With the booster, extended capacity ata low cost can be realized!
In recent years, the market trend of various devices thatcompose in the automotive electronics such as EV, HEV,and the new energy market for PV power generation,
fuel cells, secondary batteries have been moved tohigher voltage and larger capacities. At the same time,it has increased the demand for the Electronic Loadevaluation equipment to meet these new requirement.
The PLZ-4WH Series continues to provide excellent
operability of the conventional model (PLZ-4W Series)
while extending the maximum operating voltage to650 V. Furthermore, when a booster unit (PLZ2004WHB)
is connected, up to 9 kW/450 A can be realized withless space and at a low cost. The interface, USB, GPIB,
and RS232C functions comes as standard and supports
automated testing applications.

EV and HEV high-voltage converter evaluation testing
PV power generation, fuel cell, secondary batteries,
Applications
and other evaluation testing High-voltage device
evaluation testing

Actualsize
D C

E L E C T R O N I C

L O A D

Multi-functional Electronic Load

PLZ-4WH Series
4 model■ Product line-up
Model

Operating voltage

PLZ164WH
PLZ334WH
PLZ1004WH
PLZ2004WHB

5 V to 650 V

Current

Power8.25 A

165 W

16.5 A

330 W

50 A

1000 W

100 A

2000 W[Other features]●Parallel operation function ●Communication function ●Voltage monitor output ●Current monitor output ●Adjustable slew rate ●Switching operation ●Soft start ●Elapsed time display●Auto load-off timer ●Remote sensing ●External load on/off control input ●External range switching input ●External trigger input ●External alarm input ●Alarm status output●Load-on status output ●Range status output ●Short signal ●External voltage control (CC, CR, CV, and CP modes) ●External resistance control (CC, CR, CV, and CP modes)●Overvoltage protection (OVP) ●Overcurrent protection (OCP) ●Overpower protection (OPP) ●Overheat protection (OHP) ●Undervoltage protection (UVP) ●Reverse connection protection (REV)2

Accessibility

Reliable testingsupported by ease of use
The front panel is the common design in all of PLZ-4W Series.
Since operability is uniform, tests can be set up quickly andeasily.

Operating range up to 650 V
The PLZ-4WH supports input voltages of up to 650V, and it
can be used to evaluate EV and HEV in-vehicle chargers, DC/
DC converters, and battery cells; evaluate power supplies
for high-voltage DC electric supply systems; perform PFC
tests on European and other three-phase 400 V system input
power supplies; and evaluate and test high-voltage parts
related to such equipment. Moreover, it achieves to enlarge
further operating range. (See the figure below.) It can operatefrom 5 V, and even if the current is more than 0.5 V and lessthan 5 V, it can be used with reduced current.
●Comparison with our conventional
PLZ-3WH (PLZ1003WH) model
Operating range of Model PLZ1004WH (H range)

4WH

650

3WH

500
100

Input
voltage (V)10Conventional Model
PLZ1003WH
1
kW

Operating area
where specifications
are guaranteed

5

Actual operating area
3WH

1.0

4WH

0.5
0.1
0.1

Easy measurement ofvoltage and current
In addition to an insulated-typecurrent monitor terminal, an
insulated-type voltage monitor
terminal has been attached to
the front panel. This makes it
possible to measure voltage
and current simply and withconfidence.
When set in 650 V range
When set in 65 V range

50A

1.54
1
10
Input current (A)

50

100

Full-featured interface
communication function
The unit comes equipped as
standard with USB, GPIB, andRS232C functions, so it can easily
be incorporated into a variety ofinspection systems.

100:1
10:1
3

Performance

Achieving up to 9 kW/450 A with less space and low cost
By connecting the maximum of four PLZ2004WHB boosters (sold separately)to the PLZ1004WH, it is possible to use the product as an Electronic Load unit
for up to 9 kW/450 A. Compared to parallel operation of the same model,
size (space) reductions of up to about 30 %, can be achieved. Incidentally,
optional PC01-PLZ-4W and PC02-PLZ-4W parallel operation cables will be
required for connections depend on the number of units to be connected.

● In comparison of the conventional modelfor the maximum 9 kW system■ Boosters PLZ2004WHB
Approx.

30%
of reduced
volume*Exclusively used for Model PLZ1004WH.
It can not be used to connect any other model.

●Example combination
3 kW system consisting of PLZ1004WH (top)and PLZ2004WHB booster (bottom)

Conventional Model
PLZ-3WH Series
PLZ1003WH×9

PLZ-4WH Series
PLZ1004WH+PLZ2004WHB×4●Parallel operating units and capacity (maximum current and power)
Slave Unit

1 Unit2 Units

3 Units

4 Units

PLZ2004WHB

150 A
3000 W

250 A
5000 W

350 A
7000 W

450 A
9000 W

Capable of parallel operation
with up to five units of thesame model
Parallel operation without the use of boosters is also possible up
to five units of the same model, including the master unit, canbe connected in parallel (5 kW/250 A maximum). In this case, thesystem operates under the master-slave configuration, and themaster unit controls and displays the entire system. Note that
optional PC01-PLZ-4W parallel operation cables will be requiredfor connections depend on the number of units to be connected.

●Basic connection diagram[Booster operation][Parallel operation]

Master (PLZ1004WH)

Master (PLZ1004WH)

Booster (PLZ2004WHB)

Slave (PLZ1004WH)

Booster (PLZ2004WHB)

Slave (PLZ1004WH)

Slave (PLZ1004WH)
Booster (PLZ2004WHB)●Parallel operating units and capacity (maximum current and power)
Slave Unit

1 Unit2 Units

3 Units

4 Units

PLZ164WH

16.5 A
330 W

24.75 A
495 W

33 A
660 W

41.25 A
825 W

PLZ334WH

33 A
660 W

49.5 A
990 W

66 A
1320 W

82.5 A
1650 W

PLZ1004WH

100 A
2000 W

150 A
3000 W

200 A
4000 W

250 A
5000 W

Slave (PLZ1004WH)
Booster (PLZ2004WHB)

ーPC02-PLZ-4W parallel cable

ーPC01-PLZ-4W parallel cable(for connecting main unit and booster)*The constant current mode setting accuracy and current measurement accuracy can be
set to the same accuracy as that of the main unit by calibrating in parallel operation.

★ Large capacity systems (9kW and above), rack systems and so on is also able to be supported. For details, please contact us.
4Performance

Low range (1/100) feature
In CC, CR, and CP modes, three ranges are available: H, M, and L.
The L range is 1/100, enabling coverage from low to high powerwith a single unit.

●Current setting resolution
PLZ164WH

PLZ334WH

PLZ1004WH

H

300 μA

1 mA

2 mA

M

30 μA

100 μA

200 μA

L
3 μA
10 μA
●Constantcurrent mode(CC)20 μA

Voltage［V］

I
V1Constant Voltage
power supply

Current is constanteven when the voltagechanges

Ability to switch between a wide range of response speeds
PLZ-4WH Series
Electronic Load0

Current［ I］
CC setting value

CC, CR modes (4 stages)
CV mode (5 stages)●Constantresistancemode(CR) 100: 100 times the normal
1/1:
Normalresponse speed
speed
Resistance(V/I) is constant
1/2:
1/5:

Half the normal speedI
One-fifth the normal speed

V1
1/10: One-tenth
the normal speed
Constant voltage
power supplyVeven when the voltage and10:

10 times the normal
currentspeed
vary

1/1:

Normal response speed

1/10:

V2
One-tenth
the normal speed

Voltage［V］

The PLZ-4WH detects input current and voltage, and it operates
by negative feedback control of those values. It secures and maintains stable operation by enabling the user to select the optimum
speed of response by setting the negative feedback control
response as shown below to counter operational instability that
occurs in connection with the response characteristics of the test
object, length of the load wiring, or size of the loop, for instance.

V

1/100: One-hundredth the normal
V 1 speed
V2
R= =
V1

PLZ-4WH Series
Electronic Load

I1

0

I1

I2

I2

Current［ I］●Constant voltage mode(CV)Support for six operation modes

Voltage is constant evenwhen the current varies

I
Voltage［V］

R1
V1

The PLZ-4WH is equipped with six operation modes: constant current, constantresistance, constant voltage, constant power, constant
Constant voltage
power supplyV
current + constant voltage, and constant resistance + constant voltage modes.
PLZ-4WH Series
Electronic Load0

Equivalent circuits and operation in each mode

●Constant power mode(CP)●Constant current mode(CC)I

V
PLZ-4WH Series
Electronic Load0

Current is constanteven when the voltagechanges

V1
Constant voltage
power supply

Voltage［V］

Voltage［V］

I

V1Constant Voltage
power supplyV

PLZ-4WH Series
Electronic Load

Current［ I］

Resistance (V/I) is constanteven when the voltage andcurrent vary

Voltage［V］

I

PLZ-4WH Series
Electronic Load

R=

V1

0

I1

V1
= VI22
I1

V2

0

I1

I2

Rated maximum

CC operation
Current is constanteven when thevoltage varies

CV
Settingvalue

VPLZ-4WH Series
Electronic Load

I2

CV operation
Voltage is constant evenwhen the current varies

0 Current［ I］

CC setting value●Constant resistance+constant voltage mode(CR+CV)
Voltage［V］

V

I

VM
Battery

Voltage is constant evenwhen the current varies

I

V1
Constant voltage
power supply

R1

Current［ I］●Constant voltage mode(CV)R1I2●Constant current+constant voltage mode(CC+CV)

PLZ-4WH Series
Electronic Load0

R1

Voltage［V］

V

V2

P = V 1 I1 = V 2

V1

Voltage［V］●Constant resistance mode(CR)Power (current×voltage) is constanteven when the current and voltage vary

Current［ I］current value

CC setting value

V1
Constant voltage
power supply

Current［ I］

I

VM
BatteryCV

V

Current［ I］

Settingvalue

PLZ-4WH Series
Electronic Load

CR operation
Resistance (V/I) is constanteven when the voltage andcurrent varyCV operation
Voltage is constant evenwhen the current varies

0 Current［ I］●Constant power mode(CP)］IPower (current×voltage) is constanteven when the current and voltage vary

5

Functions

Load-on/off operations

Soft start function►Adopting the Load-on/off functions that flexibly
apply to the system►Assures even with steep voltage application

With load-on/off operations, the following items can be selectedin addition to standard operations:● Start-up with load-on status when the power is turned on● Display the elapsed time of the load-on period● Load-off after a certain time has elapsed● Load-on/off by the relay or other external signal

Remote sensing function►Compensating the voltage drop of the wiring
Connecting a sensing terminal to the DUT makes it possible toset the combined resistance, including even the resistance of thewiring, from the panel in constant resistance mode. Also, points
that connect the sensing function can be set to a certain powerand certain voltage in constant power mode and constant voltage
mode. Furthermore, since transient characteristics are improved inthese constant voltage, constant power, and constant resistancemodes, it also leads to operational stability. (Voltage that can becompensated: 2 V one way)

ON

*There is electrostatic capacitance between the Electronic Load input terminals.
Charging and discharging current flows to this capacitance.

►Ability to start up the power in CC mode

►Transient response test conditions are also
freely changeable on the spot

In many cases during constant voltage power supply tests, testingis conducted in constant resistance mode for start-up time measurements (during start-up),
and in constant current
mode during load change
Input
tests. If, however, the soft
current
start time is set to a timecorresponding to the startTime
When soft start time is appropriate
up time of the constantvoltage power supply, it isStart-up time of equipment being tested
Start-up time of this productpossible to perform startup time measurements andload change tests in constant current mode, without changing theoperation mode. (Either 1, 2, 5, 10, 20, 50, 100, or 200 ms can beselected as the soft start time.)

In constant current mode and constant resistance mode, switching
operations of up to 4 kHz are possible with the built-in oscillator.
Also, the level, frequency, duty cycle (ratio), and other configuration
parameters can be changed even during a load-on period.

Short function

Switching function

FREQ
Th
SET[A] (100 %)TL

Edge where pulse is
output from Trig Out
terminal

LEVEL[A] (%)
0[A] (0 %)[Configuration parameters]■ Operation modes: CC and CR■ Duty cycle settings: 5 % to 95 %, in 0.1 % steps■ Frequency setting range: 1 Hz to 4 kHz■ Frequency setting resolution:
0.1 Hz at 1 Hz to 10 Hz
1 Hz at 10 Hz to 100 Hz
10 Hz at 100 Hz to 1 kHz
100 Hz at 1 kHz to 4 kHz■ Frequency setting accuracy: ±0.5 % of set*The minimum duration for a duty cycle is 50 μs.

6

In constant current mode, the product can prevent the generationof overcurrent* even when voltage is steeply applied from the
DUT in "Load On condition and with the current having beenset." For example, in a battery discharge test, it can suppress thegeneration of overcurrent
ON
Input voltage
when for some reason
Input current
voltage is suddenly applied
PLZ-4WH
to an Electronic Load used
Series0
for discharge.
Time►Improved efficiency for the current limit
evaluation with a single action
In tests such as the DC power supply "fold-back type drooping
characteristics test of current limiting characteristics," themaximum current (in constant current mode) or the minimum
resistance (in constant resistance mode) can be set with a single
action and thus increase work efficiency. At the same time,since contact signals are output to an EXT CONT connector, it ispossible to achieve even lower impedance shorting by driving
exterior relays and shorting the output of the tested device.

EUT

Large
current relay

＋

＋

−

−

PLZ-4WH
SeriesDrive
circuit

Rear panel
EXT CONTconnector

Functions

Sequence function►Actual load simulation by programming current
waveforms internally
Arbitrarily set sequence patterns can be saved in the built-in
memory and executed. Ten normal sequence programs and one
fast sequence program can be saved. Although sequence editingand execution can be performed from the panel, those tasks
can also be performed easily by using the application software
separately sold "Wavy"* sequence creation software.
*A personal computer will require one of the following interfaces: USB, RS232C, or GPIB.

■ Normal sequence
The execution time and Load ON/OFF can be set for each step.
The level can be changed not only in a stepped form but also
in a ramped form. It is also possible to cancel pausing both byusing the PAUSE function and by external trigger input, and tosynchronize with trigger output and other external equipment.
Step 1

7A

Step 2Elapsed time display andautomatic load-off timer►Convenient battery discharge function
By combining fourfunctions, namely, theelapsed time display,undervoltage protection(UVP), load-off voltage
display, and automaticl o a d - o f f t i m e r, i t i spossible to perform two
tests that are convenient▲Example of load-off voltage display
for bat ter y discharge
testing, namely, the "measurement of time from discharge start
to the final voltage" and "measurement from discharge start tothe closed circuit voltage after a certain time has elapsed."

Step 3
VoltageInput
current

100 sec ramp
(RAMP ON)
7A

150 sec ramp
(RAMP OFF)
7A

Time

80 sec ramp
(RAMP ON)
0.5A

V2

TIME BASE(execution interval)

5A

STEP 1 2 3 4 5 6 7 8 9 10
● Sequence configuration parameters
Normal Sequence

Fast Sequence

Operation mode

CC, CR, CV, CP

CC, CR

Maximum steps

256

1024

1 ms to 999 h 59 min

100 μs to 100 ms

1 ms (1 ms to 1 min)
100 ms (1 min to 1 h)
1 s (1 h to 10 h)
10 s (10 h to 100 h)
1 min (100 h to 999 h 59 min)

100 μsTime resolution(setting range)

Tcutoff

Tcount TimeABC preset memory
Settings can be saved in three memories (A, B, and C) that areavailable for each range of each mode. Saved settings canbe freely retrieved and saved even during load-on periods.
In constant current + constant voltage mode and constantresistance + constant voltage mode, the memories for theconstant current and constant voltage, and for the constantresistance and constant voltage, can be retrieved and saved.

10A

Step execution time0►Instantaneous retrieval of settings

Trigger
outputInput
current

Set the UVP detection
voltage (V1), and display
time (Tcount) that elapsed
before that voltage wasreached.（Tcount）

V1■ Fast sequence
Each step is executed at high speed. Since the time resolution ishigh, fast simulation is possible. The execution time, level, andtrigger output can be set.
Execution (RUN)

Convenient
for evaluating
batteries!!

Set the automatic load-off
timer (Tcutoff), and display
voltage (V2) after thepreset time has elapsed.

Protective functions andother features
Overcurrent protection (OCP), overpower protection (OPP),
overvoltage protection (OVP), undervoltage protection (UVP),
overheat protection (OHP), reverse connection protection (REV),
external alarm input detection, configuration setting, and setup
memories (100)7Applications

Evaluation Test on EV/HEV internal chargers and
DC/DC converters● Built-in charger characteristics test and battery simulation● Use as a high-speed constant-current power supply

By connecting a DC Electronic Load unit and high-voltage DC power
supply in parallel, the PLZ-4WH is used as a simulated battery
for an EV in-vehicle charger. Start-up tests and load change tests are
performed in Electronic Load CV mode.

The unit can be used as a high-speed constant-current power sourceby controlling high-speed positive current at A and negative current at B.
A simulation of the regenerative current of brushless motorwith regards to the interactive converter is performed.
DC Electronic Load
PLZ-4WH Series

Constant
Current
Constant
Voltage
Constant
Current

Constant
VoltageA
Constant
Current

DC Electronic Load
PLZ-4WH SeriesーConstant
Current＋

V

SourceDC Electronic Load
PLZ-4WH Series

Built-incharger

Wide Range DC Power Supply
PWR Series H type

DC-DC
converter

DC Electronic Load
PLZ-4WH Series

DC Power Supply
PAT-T Series

Sink
Constant
Current＋ーIControl PC
Wavy for PLZ 3ch*custum orderHome charge plug

（Constant
Current ）A0
T (time)

Built-in charger

B

High-voltage battery(Li-ion)
New ECU
Quick charge plug
ECU

DC/3-phaseconverter(ECU)

EPS

DC-DC
converter

Sub-battery

Rear drive
motor

Front drive
motor▲ General view of EV interior● For power supply variation tests● For motor surge absorption measurement

By connecting a DC Electronic Load unit and high-voltage DC power
supply in parallel, the PLZ-4WH is used as a simulated battery tosimulate medium speed power supply variations.Variation waveforms
can be created and executed with Wavy sequence creation software.

During a brushless motor performance evaluation,
the regenerative current from the brushless motor is absorbed,
protecting the power supply and ECU.

Constant
Current

I (Constant Current)

Constant
Voltage

Constant
Voltage
Constant
VoltageT (time)*Regenerative current from motorV

Thin-type Variable-switching
Power Supply
PAG Series

ECU

DC-DC
converter
DC Electronic Load
PLZ-4WH Series

DC Power Supply
PAT-T Series*Current flows both ways.

motor
M Brushless

V（Constant
Voltage ）Constant
VoltageT (time)

DC Electronic Load
PLZ-4WH Series

Constant
Current*Absorbs regenerative current.

Control PC
Wavy for PLZ★ Select a PLZ-4W, 4WL, or 4WA Series unit according to the purpose of use. See the series lineup at the end of this catalogue.
8Applications

For evaluation test on parts●For life performance acceleration tests●As high-accuracy constant current power supply

The PLZ-4WH can be used not only for temperature rise tests,
long-term durability tests, pulse interrupt characteristics tests,
and other high-accuracy constant current tests but also
for pulse current evaluations.
Constant
Voltage

By connecting a constant voltage power supply and a DC
Electronic Load unit in series, the product achieves constantcurrent at the DC Electronic Load unit's constant current accuracy.
Constant
Voltage

Constant ConstantCurrent ResistanceI

DC Electronic Load
PLZ-4WH Series

DUT

DUT fuse/other（Constant
Current ）I (Constant Current)

V

V

Pulse current

ー

＋

V

DC Power Supply
PAT-T Series（Constant
Voltage ）DC Electronic Load
PLZ-4WH Series

DC Power Supply
PAT-T Series

T (time)Current sensor

For evaluation test on secondary batteries●For battery charge-discharge tests●Battery capacitor

The PLZ-4WH can be used to evaluate impedance and residual capacity
by discharging electricity not only at a normal constant current
but also at a pulse current corresponding to the actual load.
Waveform patterns can be created with Wavy for PLZ, too.
DC Electronic Load
PLZ-4WH Series

Constant
Current

Thin-type Variable-switching
Power Supply
PAG Series

During a secondary cell performance evaluation, it is necessary
to perform a capacity test based on the battery's rating. Using
the Electronic Load unit's +CV function, a capacity evaluation is
performed by discharging the CV when the prescribed voltage is reached.
Constant
I Current ）（Secondary battery

＋

＋

＋

（

V

CC operation CV operation

V）

Constant
Voltage（Constant
Voltage ）CC settingーー

Pulse discharge
voltage and current

Battery
Capacitor

Option"Wavy" sequence creation and control software

Constant
Voltage

Constant
Current

Wavy seriesV+CV
setting（Constant
Voltage ）（Constant
Current ）CC settingI

DC Electronic Load
PLZ-4WH Series

Interrupting current at CV setting

Download !
A Wavy trial version is available!
You can try it out for three weeks without functional limitations.
http://www.kikusui.co.jp/en/download/index.html

This is software that further enhances the waveform generation and sequence functions of the PLZ-4WH Series.
Using a mouse, it is possible to create and edit with the sensation of using a spreadsheet and drawing.
■ Sequence creation software Wavy for PLZ-4W
Operating environment : Windows 7/Windows 8*See our home page for details.

▲Screen sample● Creating and editing data of test conditions required so that the sequence operation can be done
easily.
● Using the save function for data files of test conditions makes routine test condition control easy.
● The progress of executed sequences is displayed by the cursor and settings on an “execution graph.”● It is possible to observe actual output intuitively, using a “monitor graph” that plots monitored values while an execution is in progress.
● Acquired monitor data can be saved as test results.
● A “waveform image” window was newly added, making it easy to see the waveforms of alternating
current (AC) signals.
● Arbitrary new waveforms can be easily created and edited. Also, arbitrary waveforms that are
created can be quickly written and output.
● The product supports the selection and nonselection of sequence step items. Functions such as
the pause function, trigger function, and AC waveform can be selected as needed.

9■ PLZ164WH / PLZ334WH / PLZ1004WH specifications
Ratings
Model
PLZ164WH
PLZ334WH
PLZ1004WH
Operating voltage (DC) *1
5 V to 650 V
Current
8.25 A
16.5 A
50 A
Power
165 W
330 W
1000 W
Input resistanceApprox. 2.21 MΩ *2
when the load is off*1 The minimum operating voltage at which current begins to flow through the PLZ-4WH isapproximately 50 mV. At the load input terminals on the rear panel.
*2 Approx. 2.21/(the number of units) MΩ during parallel operation of units of the same model.
Constant current (CC) mode
Model
PLZ164WH
PLZ334WH
PLZ1004WH
H range
0 A to 8.25 A
0 A to 16.5 A
0 A to 50 A
Operating
M range
0 A to 825 mA
0 A to 1.65 A
0 A to 5 A
range
L range
0 A to 82.5 mA
0 A to 165 mA
0 A to 500 mA
H range
0 A to 8.6625 A
0 A to 17.325 A
0 A to 52.5 A
Setting range
M range
0 A to 866.25 mA
0 A to 1.7325 A
0 A to 5.25 A
L range
0 A to 86.625 mA
0 A to 173.25 mA
0 A to 525 mA
H range
300 μA
1 mA
2 mA
Resolution
M range
30 μA
100 μA
200 μA
L range
3 μA
10 μA
20 μA
L, M range±(0. 2 % of set + 0.1 % of f.s *1)
L range,±(0.2 % of set + 0.1 % of f.s)
300 μA or more
Setting
L range,accuracy±(0.2 % of set + 0.1 % of f.s) + Vin *2 /2.21 MΩ
less than 300 μA
Parallel±(0.2 % of set + 1.1 % of f.s *1)
operation
H, M range
20 mA
Input voltage
variation *3
L range
2 mA
rms *4
2 mA
4 mA
12 mA
Ripplep-p *520 mA
40 mA
120 mA*1 The full scale of the range. However, for the M range, it is the full scale of the H range.
*2 Vin: The voltage at the load input terminals on the rear panel or sensing terminals*3 When the input voltage is changed from 5 V to 650 V at a current equal to the rated power/650 V.
*4 Measurement frequency bandwidth: 10 Hz to 1 MHz*5 Measurement frequency bandwidth: 10 Hz to 20 MHz
Constant resistance (CR) mode
Model
PLZ164WH
PLZ334WH
PLZ1004WH
1.65 S to 30 μS
3.3 S to 60 μS
10 S to 200 μS
H range(606.06 mΩ to 33.333 kΩ) (303.03 mΩ to 16.666 kΩ)(100 mΩ to 5 kΩ)
165 mS to 3 μS
330 mS to 6 μS
1 S to 20 μS
Operating
M range
range*1(6.06 Ω to 333.333 kΩ) (3.03 mΩ to 166.666 kΩ) (1 Ω to 49.999 kΩ)
16.5 mS to 0.3 μS
33 mS to 0.6 μS
100 mS to 2 μS
L range(60.606 Ω to 3.333 MΩ) (30.303 Ω to 1.666 MΩ)(10 Ω to 500 kΩ)
1.7325 S to 0 S
3.465 S to 0 S
10.5 S to 0 S
H range(577.2 mΩ to OPEN)(288.6 mΩ to OPEN)(95.23 mΩ to OPEN)
173.25 mS to 0 S
346.5 mS to 0 S
1.05 S to 0 S
Setting range
M range(5.772 Ω to OPEN)(2.886 Ω to OPEN)(952.3 mΩ to OPEN)
17.325 mS to 0 S
34.65 mS to 0 S
105 mS to 0 S
L range(57.72 Ω to OPEN)(28.86 Ω to OPEN)(9.523 Ω to OPEN)
H range
30 μS
60 μS
200 μS
Resolution
M range
3 μS
6 μS
20 μS
L range
0.3 μS0.6 μS
2 μS
H, M range±(0.5 % of set *3 + 0.5 % of f.s *4)
Setting
L range±(0.5 % of set *3 + 0.5 % of f.s) + Vin *5 /2.21 MΩ
accuracy *2
Parallel±(1.2 % of set *3 + 1.1 % of f.s *4)
operation (typ)*1 Conductance [S] = Input current [A]/input voltage [V] = 1/resistance [Ω]*2 Converted value based on the input current at the sensing point.
*3 set = Vin/Rset*4 The full scale of the range. However, for the M range, it is the full scale of the H range.
*5 Vin: The voltage at the load input terminals on the rear panel or sensing terminals

Constant voltage (CV) mode
Model
PLZ164WH
PLZ334WH
PLZ1004WH
H range
5 V to 650 V
Operatingrange
L range
5 V to 65 V
H range
0 V to 682.5 V
Setting range
L range
0 V to 68.25 V
H range
20 mV
Resolution
L range
2 mV
Setting accuracy *1±(0.2 % of set + 0.2 % of f.s)Parallel operation (typ)±(0.2 % of set + 0.2 % of f.s)
Input current variation *2
65 mV*1 At the sensing point during remote sensing when the input voltage is within the operating range.
*2 At an input voltage of 0.3 V when the current changes from 10 % to 100 % of the rating (during
remotesensing)
Constant power (CP) mode
Model
PLZ164WH
PLZ334WH
PLZ1004WH
H range
16.5 W to 165 W
33 W to 330 W
100 W to 1000 W
Operating
M range
1.65 W to 16.5 W
3.3 W to 33 W
10 W to 100 Wrange
L range
0.165 W to 1.65 W
0.33 W to 3.3 W
1 W to 10 W
H range
0 W to 173.25 W
0 W to 346.5 W
0 W to 1050 W
Setting range
M range
0 W to 17.325 W
0 W to 34.65 W
0 W to 105 W
L range
0 W to 1.7325 W
0 W to 3.465 W
0 W to 10.5 W
H range
10 mW
20 mW
100 mW
Resolution
M range
1 mW
2 mW
10 mW
L range
0.1 mW
0.2 mW
1 mW
H, M range±(2.5 % of f.s *1)
L range,±(3 % of f.s)
0.25 W or more
SettingLrange,
accuracy±(3 % of f.s + Vin *2 /2.21 MΩ)Less than 0.25 W
Parallel±(5 % of f.s + Vin *2 /2.21 MΩ) at 23 °C±5 °C
Operation (TYP)*1 The full scale of the range. However, for the M range, it is the full scale of the H range.
*2 Vin: The voltage at the load input terminals on the rear panel or sensing terminals
Voltmeter
Model
PLZ164WH
PLZ334WH
PLZ1004WH
H range0.00 V to 650.00 V
Display
L range
0.000 V to 65.000 V
Accuracy±(0.1 % of reading + 0.1 % of f.s)Parallel Operation (TYP)
AmmeterModel
PLZ164WH
PLZ334WH
PLZ1004WH
H, M range
0.0000 A to 8.2500 A 0.000 A to 16.500 A
0.00 A to 50.000 A
Display
L range
0.000 mA to 82.500 mA 0.00 mA to 165.00 mA 0.00 mA to 500.00 mA
Accuracy±(0.2 % of reading + 0.3 % of f.s)Parallel Operation (TYP)±(1.2 % of reading + 0.3 % of f.s *1)*1 The full scale of the range. However, for the M range, it is the full scale of the H range.
Wattmeter
Model
PLZ164WH
PLZ334WH
PLZ1004WH
H, M range
0.00 W to 165.00 W
0.00 W to 330.00 W
0.0 W to 1000.0 W
Display
L range, except CP mode 0.000 W to 53.625 W
0.00 W to 107.25 W
0.00 W to 325.00 W*1
L range, CP mode 0.0000 W to 1.6500 W 0.0000 W to 3.3000 W 0.0000 W to 10.000 W*1 Displays the product of the voltmeter reading and ammeter reading.
Switching mode
Model
PLZ164WH
PLZ334WH
PLZ1004WH
Operating mode
CC and CR
Duty cycle
5 % to 95 % *1 in 0.1 % steps
Frequency range
1 Hz to 4 kHz
1 Hz to 10 Hz
0.1 Hz
10 Hz to 100 Hz
1 Hz
Frequency
resolution
100 Hz to 1 kHz
10 Hz
1 kHz to 4 kHz
100 HzFrequency setting accuracy±(0.5 % of set )*1 The minimum time width is 50 μs. Between 1 kHz and 4 kHz, the maximum duty cycle is limitedby
the minimum time width.

Slew rate
PLZ334WH
0.264 mA/μs to 264 mA/μs
Setting range *1
26.4 μA/μs to 26.4 mA/μs
2.64 μA/μs to 2.64 mA/μs
100 μA /μs (26.4 mA/μs to 264 mA/μs)
H range
10 μA/μs (2.64 mA/μs to 26.4 mA/μs)
1 μA/μs (0.264 mA/μs to 2.64 mA/μs)
10 μA/μs (2.64 mA/μs to 26.4 mA/μs)
Resolution
M range
1 μA/μs (0.264 mA/μs to 2.64 mA/μs)(Setting range)
100 nA/μs (26.4 μA/μs to 264 μA/μs)
1 μA/μs (0.264 mA/μs to 2.64 mA/μs)
L range
100 nA /μs (26.4 μA/μs to 264 μA/μs)
10 nA /μs (2.64 μA/μs to 26.4 μA/μs)
Setting accuracy *2±(10 % of set + 25 μs)*1 Can only be set in constant current mode. In constant resistance mode, the maximum slew rate of eachrange is 1/10.
*2 The time it takes to shift from 10 % to 90 % when the current is varied from 2 % to 100 % (20 % to 100 %in the M range) of the rated current
Model

H range
M range
L range10

PLZ164WH
0.132 mA/μs to 132 mA/μs
13.2 μA/μs to 13.2 mA/μs
1.32 μA/μs to 1.32 mA/μs
50 μA/μs (13.2 mA/μs to 132 mA/μs)
5 μA /μs (1.32 mA/μs to 13.2 mA/μs)
0.5 μA /μs (0.132 mA/μs to 1.32 mA/μs)
5 μA/μs (1.32 mA/μs to 13.2 mA/μs)
0.5 μA /μs (0.132 mA/μs to 1.32 mA/μs)
50 nA /μs (13.2 μA/μs to 132 μA/μs)
0.5 μA/μs (0.132 mA/μs to 1.32 mA/μs)
50 μA/μs (13.2 μA/μs to 132 μA/μs)
5 nA/μs (1.32 μA/μs to 13.2 μA/μs)

PLZ1004WH
0.8 mA/μs to 0.8 A/μs
80 μA/μs to 80 mA/μs
8 μA/μs to 8 mA/μs
300 μA /μs (0.08 A/μs to 0.8 A/μs)
30 μA/μs (8 mA/μs to 80 mA/μs)
3 μA/μs (0.8 mA/μs to 8 mA/μs)
30 μA/μs (8 mA/μs to 80 mA/μs)
3 μA/μs (0.8 mA/μs to 8 mA/μs)
0.3 μA/μs (80 μA/μs to 800 μA/μs)
3 μA/μs (0.8 mA/μs to 8 mA/μs)
0.3 μA /μs (80 μA/μs to 800 μA/μs)
30 nA /μs (8 μA/μs to 80 μA/μs)

Soft start
Model
Operating mode
Selectable times
Time accuracy
Response speed
Response speed

PLZ164WH

PLZ334WH
PLZ1004WH
CC mode1 ms, 2 ms, 5 ms, 10 ms, 20 ms, 50 ms, 100 ms, 200 ms *The time it takes to shift from 10 % to 90 % of the rated current±(30 % of set +100 μs)

CC/CR mode
CV modeRemote sensing
Voltage that can be compensatedProtection function
Overvoltage protection (OVP)
Overcurrent protection (OCP)
Overpower protection (OPP)
Overheat protection (OHP)
Undervoltage protection (UVP)
Reverse-connection protection (REV)
Sequence function
Operating modes
Maximum number of steps
Normalsequence Step execution time
Time resolution (setting range)
Operating mode
Maximum number of steps
Fast
sequence Step execution time
Time resolution
Other functions
Elapsed time display
Auto load-off timer
Analog external control (EXT CONT connector)
Load-on/off control input
Range switch input
Trigger input
External alarm input
Alarm status output
Load-on status output
Range status output
Short signal output
External voltage control(CC, CR, CP, and CV mode)
External resistance control(CC, CR, CP, and CV mode)
Current monitor output
Voltage monitor output
Front-Panel BNC Terminal
TRIG OUT
Current monitor output
Voltage monitor output
Communication functions
GPIB
RS232CUSB
General specifications
Input voltage range / input frequency range
Power consumption
Inrush current *1
Protective conductor current
Operating temperature range/humidity range
Storage temperature range/humidity range
Isolation voltage
Primary to input terminal
Insulation
Primary to chassis
resistance
Secondary to chassis
Primary to input terminal
WithstandPrimary to chassis
voltage
Secondary to chassis
Dimensions (mm)WeightBattery backup

1/1, 1/2, 1/5, 1/10
100, 10, 1, 1/10, 1/100
2 V for a single line
Turns off the load when 110 % of the range’s maximum voltage is detected.
Can be set to 110 % of each range’s maximum current or the values given below. The action can be set to load off or limit.
Can be set to 110 % of each range’s maximum power or 0.1 % to 110 % of the rated power. The action can be set to load off or limit.
urns off the load when the heat sink temperature reaches 90 °C.
Turns off the load when the specified value is detected. Can be set to a value from 5 V to 650 V of OFF.
Implemented through a fuse and a diode. Turns off the load when an alarm occurs.
CC, CR, CV, and CP
256
1 ms to 999 h 59 min
1 ms for 1 ms to 1 min, 100 ms for 1 min to 1 h, 1 s for 1 h to 10 h, 10 s for 10 h to 100 h, 1 min for 100 h to 999 h 59 min
CC and CR
1024
100 μs to 100 ms
100 μsMeasures the time from load on to load off. Can be turned on and off. Measures from 1 s up to 999 h 59 min 59 s
Automatically turns off the load after a specified time elapses. Can be set to off or a time within the range of 1 s to 999 h 59 min 59 s.
Turn on the load with a high (or low) CMOS level signalLogic level switchable. The internal circuit is pulled up to 5 V by a 10 kΩ resistor.
Switch ranges L, M, and H using a 2-bit signal.
Clear the sequence operation pause with a high CMOS level signal whose duration is 10 μs or longer. The internal circuit is pulled down to common by a 100 kΩ resistor.
Activate the alarm with a low CMOS level signal. The internal circuit is pulled up to 5 V by a 10 kΩ resistor.
On when OVP, OCP, OPP, OHP, or REV is activated or when an external alarm input is applied (open collector output from a photocoupler)
On when the load is on (open collector output from a photocoupler)Outputs range L, M, or H using a 2-bit signal (open collector output from a photocoupler).
Relay contact output (30 Vdc/1 A).
External input voltages in the range of 0 V to 10 V correspond to 0 % to 100 % of the rated current (CC mode), rated power (CP mode), and rated voltage (CV mode).
External input voltages in the range of 0 V to 10 V correspond to the range of resistances from the maximum resistance to the minimum resistance (CR mode).
Exte rnal resistances in the range of 0 Ω to 10 kΩ correspond to 0 % to 100 % or 100 % to 0 % of the rated current (CC mode), rated power (CP mode),or rated voltage (CV mode). External resistances in the range of 0 Ω to 10 kΩ correspond to the range of resistances from the maximum resistanceto the minimum resistance or from the minimum resistance to the maximum resistance (CR mode).
10 V for f.s (H or L range), 1 V for f.s (M range)
For each range, 10 V for f.s
Transmits pulses during sequence operation and switching operation. Output impedance: 1 kΩ, Output voltage: approx. 4.5 V, Pulse width: 2 μs
10 V for f.s (H or L range), 1 V for f.s (M range), Output current: up to 5 mA
For each range, 6.5 V for f.s, Output current: up to 5 mA
IEEE std. 488.1-1987SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0, E1
Supports the SCPI and IEEE std. 488.2-1992 command setSets panel functions except for the function of the power switch and reads measured values
D-SUB 9-pin connector (conforms to EIA-232-D)
Supports the SCPI and IEEE std. 488.2-1992 command setSets panel functions except for the function of the power switch and reads measured values
Baud rate: 2400, 4800, 9600, 19200 bps. Data length: 8 bits, Stop bits: 1/2 bits, Parity bit: None. Flow control: Xon/Xoff
Conforms to the USB 2.0 specifications and the USBTMC-USB488 device class specifications. Standard Type B socket.
Sets panel functions except for the function of the power switch and reads measured valuesCommunication speed 12 Mbps (Full speed)

100 Vac to 240 Vac (90 Vac to 250 Vac), single phase, continuous / 47 Hz to 63 Hz
90 VAmax
160 VAmax
140 Amax
600 μA (100 Vac at 50 Hz; TYP)
0 °C t o 40 °C (32 °F to 104 °F) / 20 %rh to 85 %rh (no condensation)-20 °C to 70 °C (-4 °F to 158 °F) / 90 %rh or less (no condensation)±750 Vdc
1000 Vdc, 30 MΩ or more (ambient humidity of 70 %rh or less)1000 Vdc, 30 MΩ or more (ambient humidity of 70 %rh or less)1000 Vdc, 30 MΩ or more (ambient humidity of 70 %rh or less)
No abnormalities at 1500 Vac for 1 minuteNo abnormalities at 1500 Vac for 1 minuteNo abnormalities at 1000 Vdc for 1 minute
See the outline drawing.
Approx. 7 kg (15.4 lb.)
Approx. 8kg (17.6 lb.)
Approx. 16kg (35.3 lb.)
Backs up setup information
Power cord: 1 pc. (with plug, length: 2.4 m), Load input terminal cover: 1pc., Lock plates for load input terminal cover: 2 sets,
Accessories
Set of screws for the load input terminal: 2 sets, CD-R: 1pc., Operation Manual(Setup Guide: 1 pc., Quick Reference(English & Japanese): Each 1 pc.)
Complies with the requirements of the following directive and standards. EMC Directive 2014/30/EU
Electromagnetic ompatibility *2 *3
EN 61326-1 (Class A*6), EN55011 (Class A*6, Group 1*7), EN 61000-3-2, EN 61000-3-3
Safety *2Complies with the requirements of the following directive and standards. Low Voltage Directive 2014/35/EU*3 , EN 61010-1 (Class I*4, Pollution degree 2*5)
*1 Approx. 70 A when receiving an input of 100 Vac. *2 Does not apply to specially ordered or modified PLZ-4WHs.
*3 Limited to products that have the CE mark on their panels. Not be in compliance with EMC limits unless the ferritecore is attached on the cable for connection of J1 connector.
*4 This is a Class I equipment. Be sure to ground this product’s protective conductor terminal. The safety of this productis only guaranteed when the product is properly grounded.
*5 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction of dielectric strength orsurface resistivity. Pollution Degree 2 assumes that only non-conductive pollution will occur
except for an occasionaltemporary conductivity caused by condensation.
*6 This is a Class A equipment. This product is intended for use in an industrial environment. This product may causeinterference if used in residential areas. Such use must be avoided unless the user takes special
measures to reduceelectromagnetic emissions to prevent interference to the reception of radio and television broadcasts.
*7 This is a Group 1 equipment. This product does not generate and/or use intentionally radio-frequency energy, in theform of electromagnetic radiation, inductive and/or capacitive coupling, for the treatment ofmaterial or inspection/analysis purpose.
80 VAmax11

■ PLZ2004WHB specifications
Ratings
Model
PLZ2004WHB
Operating voltage
5 Vdc to 650 Vdc *1
Current
100 A
Power2000 W
Input resistance when the load is off
2.21 MΩ *2*1 Minimum voltage at which the current starts flowing to the PLZ2004WHB is approx. 0.5 V. The
PLZ2004WHB detects no signal at an input voltage less than or equal to approx. 0.5 V and an
input current less than or equal to approx. 1 % of the range rating. If the input voltage is gradually
increased from 0 V, no current will flow until 0.5 V is exceeded. Once a current greater than or equal
to 1 % of the range rating starts flowing, the current can flow at voltages less than equal to 0.5 V.
*2 Condition in which the booster is connected to the master unit.
Constant current (CC) mode
H range
0 A to 100 A
Operating range
M range
0 A to 10 A
L range
0 A to 1 A
H range
0 A to 105 A
Setting range
M range
0 A to 10.5 A
L range
0 A to 1.05 A
H range
10 mA
Resolution*3
M range
1 mA
L range
0.1 mA
Ripple*4
H,M,L range PLZ1004WH specification x (total power capacity/1 kW) (TYP)*3 When one PLZ2004WHB is connected.
*4 Condition in which the booster is connected to the master unit.
Accuracy of setting
CC mode *5±(1.2 % of set + 1.1 % of f.s *6)
CR mode±(1.2 % of set + 1.1 % of f.s *6) (TYP)
CV mode±(0.2 % of set + 0.2 % of f.s) (TYP)
CP mode±(5 % of f.s *6) (TYP), at 23°C±5°C
Measurements
Accuracy of voltmeter±(0.1 % of reading + 0.1 % of f.s) (TYP)
Accuracy of ammeter±(1.2 % of reading + 1.1 % of f.s *6) (TYP)
Wattmeter
Displays the product of the voltmeter reading and ammeter reading*5 Condition in which the booster is connected to the master unit.
*6 The full scale of the range. However, for the M range, it is the full scale of the H range.
Protection function *7
Overheat protection (OHP)
Turns off the load when the heat sink temperature reaches 95 ºC
Reverse connection protection (REV)
Protection by fuse
*7 Other Protection functions detect and operate with the PLZ1004W/PLZ1004WH.

■ Dimensions Unit: mm (inch)

General specifications
Model
Input voltage range
Input frequency range
Power consumption
Inrush current *8
Protective conductor current
Operating temperature range
Operating humidity range
Storage temperature range
Storage humidity range
Primary - input
connector,
Insulation
Primary - chassis,
resistance
Input connector chassis
Primary - input
Withstandconnector,
voltagePrimary - chassis
Dimensions/Weight

PLZ2004WHB
100 Vac to 240 Vac(90 Vac to 250 Vac) single phase, continuous
47 Hz to 63 Hz
200 VAmax
120 A
600 μA (100 Vac at 50 Hz; TYP)
0 ºC to 40 ºC (32 ºF to 104 ºF)
20 %rh to 85 %rh (no condensation)-25 ºC to 70 ºC (-13 ºF to 158 ºF)
Less than or equal to 90 %rh (no condensation)

1000 Vdc,30 MΩ or more(ambient humidity of 70 %rh or less)

No abnormalities at 1500 Vac for 1 minute

See the outline drawing. /Approx. 24 kg (52.91 lb)
Power cord(1 pc. (Cable length of 2.4 m)), Load input terminal
cover(1 pc. (cover and two lock plates)), Screw set for th load
Accessories
input(2 sets (bolts, nuts, and spring washers)), Heavy object
warning label(1 pc.), Operation manual(1 pc.)
Conforms to the requirements of the following directive andElectromagnetic compatibility
standard. EMC Directive 2014/30/EU(EMC) *9 *10EN 61326-1 (Class A*11), EN55011 (Class A*11, Group 1*12),
EN 61000-3-2, EN 61000-3-3
Conforms to the requirements of the following directive and
Safety *9standard. Low Voltage Directive 2014/35/EU*10
EN 61010-1 (Class I*13, Pollution degree 2*14)*8 Approximately 70 A when 100 Vac is applied*9 Not applicable to custom order models.
*10 Only on models that have CE marking on the panel.
*11 This is a Class A equipment. This product is intended for use in an industrial environment. This
product may cause interference if used in residential areas. Such use must be avoided unless theuser takes special measures to reduce electromagnetic emissions to prevent interference to thereception of radio and television broadcasts.
*12 This is a Group 1 equipment. This product does not generate and/or use intentionally radiofrequency energy, in the from of electromagnetic radiation, inductive and/or capacitive
coupling, for the treatment of material or inspection/analysis purpose.
*13 This instrument is a Class I equipment. Be sure to ground the protective conductor terminalof the instrument. The safety of the instrument is not guaranteed unless the instrument isgrounded properly.
*14 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction ofdielectric strength or surface resistivity. Pollution Degree 2 assumes that only non-conductive
pollution will occur except for an occasional temporary conductivity caused by condensation.

●PLZ164WH, PLZ334WH (Type I)
214.5(8.44)

MAX470(18.50)
400(15.75)■ Series Selection

124(4.88)
MAX155(6.10)

MAX30(1.18)

voltageMAX
20(0.79)500V●PLZ1004WH (Type II)

12 8(5.04)
MAX150(5.91)

23(0.91)●PLZ2004WHBHigh Voltage
Middle/Low Voltage

MAX470(18.50)
400(15.75)
367(14.45)

150V

150V

27.9 70
30.1(1.10) (2.76) (1.18)

MAX30(1.18)

MAX455(17.91)
429.5(16.91)

MAX
10(0.39)

650V

650V

60V
30V
MAX590(23.23)

Low Voltage

PLZ-4WH

5V

0V

PLZ-4W
1.5V

PLZ-4WL

30V

0.3V

550(21.65)

173(6.81)

MAX190(7.48)

430(16.93)●Distributor/Representative

Southwood 4F,6-1 Chigasaki-chuo,Tsuzuki-ku,Yokohama,224-0032,Japan
Phone: (+81)45-482-6353,Facsimile: (+81)45-482-6261,www.kikusui.co.jp

1-310-214-0000 www.kikusuiamerica.com
3625 Del Amo Blvd, Suite 160, Torrance, CA 90503
Phone : 310-214-0000 Facsimile : 310-214-0014

www.kikusui.cn
Room 305,Shenggao Building , No.137,Xianxia Road, Shanghai City, China
Phone : 021-5887-9067 Facsimile : 021-5887-9069■ All products contained in this catalogue are equipment and devices that are premised on use under the supervision of qualifi ed
personnel, and are not designed or produced for home-use or use by general consumers. ■ Specifi cations, design and so forth
are subject to change without prior notice to improve the quality. ■ Product names and prices are subject to change and production
may be discontinued when necessary. ■ Product names, company names and brand names contained in this catalogue represent
the respective registered trade name or trade mark. ■ Colors, textures and so forth of photographs shown in this catalogue may
differ from actual products due to a limited fi delity in printing. ■ Although every effort has been made to provide the information as
accurate as possible for this catalogue, certain details have unavoidably been omitted due to limitations in space. ■ If you fi nd any
misprints or errors in this catalogue, it would be appreciated if you would inform us. ■ Please contact our distributors to confirm
specifications, price, accessories or anything that may be unclear when placing an order or concluding a purchasing agreement.

Issue:Oct.2019 201910PDFEC21a