High-Capacity Regenerative Electronic LoadPXZ Series

P

X

Z

S

E

R

I

E

S

High-Capacity Regenerative Electronic LoadPXZ Series

NEW

Rated power of 20 kW in 3U
Maximum operating voltage of 1500 V
Operating modes: CC, CR, CV, CP
Up to 10 units (200 kW) can be operated in parallel
Equipped with a touch panel display
Pre-charge function
I-V characteristic function
Sequence function
LAN, USB, RS232C, external analog control (isolated type) as standard *GPIB optional
Regenerative efficiency of over 90% (on-site regeneration)
https://global.kikusui.co.jp/

This high-capacity regenerative electronicload series contributes to carbon neutrality! Its highly efficient power regeneration
reduces energy loss.
The PXZ series of highly efficient, reliable,
high-capacity regenerative electronic loads
has a rated power of 20 kW in 3U. In addition
to the constant-current, constant-resistance,
constant-voltage, and constant-power operating modes, this series has an I-V characteristic function that allows the user to set arbitrary I-V characteristics for each CC and CV
operating mode. The series is also equippedwith various functions, such as sequence,pre-charge, synchronous operation, pulse,
sine, and VMCB functions. LAN, USB, andRS232C communication functions are included as standard, allowing easy integration
into various evaluation systems. The PXZ
series is highly scalable, and its capacity canbe increased up to 200 kW when operating inparallel (up to 10 units).

High-Capacity Regenerative Electronic LoadPXZ Series

NEW

Features● Rated power of 20 kW in 3U● Maximum operating voltage of 1500 V● Operating modes: CC, CR, CV, CP● Up to 10 units (200 kW) can be operated in parallel● Equipped with a touch panel display● Pre-charge function● I-V characteristic function● Sequence function● LAN, USB, RS232C, external analog control (isolated type)as standard *GPIB optional● Regenerative efficiency of over 90% (on-site regeneration)

Sink

20 kW

Maximum
voltage

1500V

3U

Approx. 128 mm(5.04 inches)

Lineup / Main Specifications
Specifications
Model

DC Input
rating power

PXZ20K-500
PXZ20K-1000

20 kW

PXZ20K-1500● Wide Operating Range With an

Expansion Ratio of 2.25 to 3 Times
The PXZ20K-500 has an operating range of 10 V to 500 V,
while the PXZ20K-1000 has a range of 20 V to 1000 V, and
the PXZ20K-1500 has a range of 30 V to 1500 V.
An operating area ranges from 2.25 to 3 times the expansion ratio.

2

Input current

weightAC (200 V 3-phase)/ (400 V 3-phase) A

Approx.

120 A

80/40

38(83.78)

20 V to 1000 V

60 A

80/40

37(81.57)

30 V to 1500 V

30 A

80/40

37(81.57)

DC Input
operating voltage

DC Input
rating current

10 V to 500 V

PXZ20K-500

PXZ20K-1000

PXZ20K-1500
1600 V

600 V

1200 V

500 V

1000 V

400 V

800 V

300 V

600 V

800 V

200 V

400 V

600 V

100 V

200 V

0V

0 A 20 A 40 A 60 A 80 A 100 A 120 A 140 A

0V
0A

kg(lbs)1400 V
1200 V
1000 V

400 V
200 V
20 A

40 A

60 A

80 A

0V

0A

Conceptual diagram of operating area

10 A

20 A

30 A

40 A

Performance / Functions● Regenerative Efficiency of Over 90 % (At Rated Input)
Thanks to high-performance switching technology, the PXZ series regenerates power with an efficiency of 90 %or higher (maximum regenerative efficiency of approximately 95 %) and load power of 6 kW or more. Since theregenerated power can be reused, carbon dioxide emission is significantly reduced.
Regeneration efficiency graph(Power supply,
batteries, etc.)

Powerregeneration(on-site regeneration)

Please note that this product is designed for on-site regeneration.
(This is not a grid-connected device that returns the power to the grid.)

Regenerative efficiency

EUT

(%)

PX
Z

Regenerative
Electronic Load

SERIES

100
95
90
85
80

PXZ20K-500 (When load voltage is 500 V)

75

PXZ20K-1500 (When load voltage is 1500 V)

70
65
60
55
50
0

5

10

15

20

25

Load power (kW)● The Value of Regenerative Power Is Visible
at a Glance!
A large LCD display shows regenerative power value in real time.
Energy-saving benefits are visible at a glance.
*The displayed power value is for reference only and may differ by up to ±500 W.

● Five-Step Slew Rate Switching
In CV and CC modes, the speed at which the current or voltage changes can be
set. This allows the user to set the optimum test conditions for DUT applications.
CC Mode: 0-120 A (PXZ20K-500)

3 A/ms*Slew rate works in the following cases:• When the current or voltage valuechanges after changing the setting
value.
• When the current or voltage value
is changed using external control.
• When the current or voltage value
is changed by turning the load on.
30 A/ms• When the load is turned off.

MAX

0.3 A/ms

60 A/ms

Zoom
Load Current 20 A/Div 50 ms/Div

Model● Operating Modes
The PXZ series has four operating modes. In addition, the I-V characteristic
function can be set in the CC and CV modes.

Operating modes
CV [V/ms]

PXZ20K-500
PXZ20K-1000
PXZ20K-1500

The set current value is maintained even if the voltage changes.

CC
DC

Normal input mode. Current is controlled by the current set value.

PULSE

Controlled by pulse function.

SINE

Controlled by sine function.

I-V

Controlled by arbitrary I-V characteristics.

EXT

The current set value is controlled by an external voltage. The external
voltage input to EXT CONT is treated as an absolute value and applied tothe current set value.

CR

1 ms/Div

Slew rate
0.125 / 1.25 / 12.5 / 125 / MAX

CC [A/ms]

0.3 / 3 / 30 / 60 / MAX

CV [V/ms]

0.25 / 2.5 / 25 / 250 / MAX

CC [A/ms]

0.150 / 1.50 / 15.0 / 30 / MAX

CV [V/ms]

0.375 / 3.75 / 37.5 / 375 / MAX

CC [A/ms]

0.075 / 0.75 / 7.5 / 15 / MAX● Equipped With a Touch Panel Display
By pressing or swiping the display with a finger, the user can select an itemon the screen or set a numerical value. The display is pressure-sensitive andcan be operated even with gloves on.
Press / Long press

Swipe

A current proportional to the change in voltage is applied using the set
conductance value as a proportionality constant.
OFF

Not controlled by conductance set value.

DC

Normal input mode. Current and voltage are controlled by the conductanceset value.

PULSE

Controlled by pulse function.

EXT

The conductance set value is controlled by an external voltage.
The set voltage value is maintained even if the current changes.

CV
DC

Normal input mode. The voltage is controlled by the voltage set value.

PULSE

Controlled by pulse function.

SINE

Controlled by sine function.

I-V

Controlled by arbitrary I-V characteristics.

EXT

The voltage is controlled by external voltage.

The calculations were made assuming the
maximum load power is 20 kW, and the device
operates continuously for one month.

The set power is maintained even if the voltage and/or current change.

▼ Comparison of PXZ20K-1500 and PLZ20005WH2 (without regenerative function)

CP
DC

Normal input mode. Power is controlled by the power set value.

EXT

The power set value is controlled by an external voltage.

● Priority Operation Mode
Immediately after turning on the load, the preferred operating mode can be
set from CC, CR, and CP. When the input from the DUT reaches the set value, the operating mode switches automatically according to the DUT status.
If the voltage of the connected DUT is higher than the voltage setpoint of the
PXZ series, current flows from the DUT to the PXZ series. Select CC if a battery or power supply is connected as the DUT.

Contributing to Carbon Neutrality
NEUTRALSAVE
ENERGY

Model

Load power

Internal loss

PXZ20K-1500

20 kW

2 kW

CO2 emissions

631 kg

PLZ20005WH2

20 kW

20 kW

6,307 kg

The PXZ series can effectively regenerate the load power without dissipating it
as heat. CO2 emissions can be reduced by approximately 5.67 tons per month(CO2 emission factor*: calculated with 0.438 kg [per kWh]). Furthermore, because the heat dissipation of the main unit is very low, the air conditioning costs
can be significantly reduced.
*The CO2 emission factor is based on the national average for electric utility
companies (FY2022 results) published by the Ministry of the Environment Government of Japan.

3Performance / Functions● External Control Function● Sequence Function

The EXT CONT connector on the rear panel can be used to control the PXZ
series with external devices. The general-purpose digital input and output
terminals can be assigned any function, facilitating system construction in
combination with other measurement devices. Digital I/O is standard for both
NPN and PNP-type PLCs. Analog I/O is isolated from output terminals asstandard, allowing safe analog control from PLC.

Preset operations can be run continuously. A total of 30 programs and up to
10,000 steps can be created for all programs. Programs stored in the unit’s
memory, and data can be exported to a USB memory stick from the front
panel.

EXT CONT
connector pin number
13

1

25

14

Programs can be linked
Program 2

Program 1

Rear panel

A total of 30 programs can be created.
Up to 10,000 steps can be created for all programs combined.
Example) Where number of Loops in program 1 is 2.
Voltage

Terminal No.
1

MethodI/O

Name

Description

DigitalOOUT Ch.1

General-purpose output terminal

2

DigitalOOUT Ch.2

General-purpose output terminal

3

DigitalOOUT Ch.3

General-purpose output terminal

4

–

–

DO COM

Digital output common

5

–

–

DI COM

Digital input common

6

DigitalI

IN Ch.1

General-purpose input terminal

Program 1

I

IN Ch.2

General-purpose input terminalI

IN Ch.3

General-purpose input terminal

9

–

O

+12 V OUT

12 V reference voltage available for digital input

10

–

–

–

Not used

–

–

A COM

Analog signal common

AnalogO

VMON

Voltage monitor

13

AnalogO

IMON

Current monitor

14

DigitalOOUT Ch.4

General-purpose output terminal

15

DigitalOOUT Ch.5

General-purpose output terminal

16

DigitalOOUT Ch.6

General-purpose output terminal

17

–

–

DO COM

Digital output common

18

–

–

DI COM

Digital input common

19

DigitalI

IN Ch.4

General-purpose input terminal

20

DigitalI

IN Ch.5

General-purpose input terminal

21

DigitalI

H ALARM IN

HIGH alarm EXT HIGH occurrence

22

–

–

12 V COM

12 V reference voltage common

23

–

–

A COM

Analog signal common

24

AnalogI

EXT CV

Voltage control in the constant voltage mode

25

AnalogI

EXT CC/CP

Current control in the constant current / power modes

Voltage and current value settings

Analog output

Monitoring of voltage and current values*Photocoupler isolated input(Supports both current sink and source)
Digital input (Ch.6)
General-purpose isolated digital output(Ch.1 to ch.6)*Semiconductor relay output

Step 4

Step 1

Step 2

Step 3• Load on/off• LOW alarm on/off• Start/stop integration measurement• Reset integrated value• Input the measurement trigger• Recall settings from preset memory
Generating HIGH alarm (fixed)• Monitor the load on/off status• Monitor the power on• Monitor the alarm• Monitor the operation mode
• Monitor the preset memory

General-purpose isolated digital input terminals are available for Ch.1 to
Ch.5. Any setting value from the items listed on the right can be selected.
INTEG CTRLINTEG RESETACQUIRE TRIGSEQ TRIG IN
MEM1 RECALL
MEM2 RECALL▼ ▼ ▼ ▼ ▼ ▼▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼OFF
LOAD ONLOAD OFFLOAD CTRL
L ALARM IN
ALARM CLRSEQ RUN
SEQ PAUSE* Ch.6 is fixed at “H Alarm IN”.

General-purpose isolated digital output terminals are available for Ch.1 toCh.6. Any setting value from the items listed on the right can be selected.
EXT DIN BUSY
MEM1 ACT TIME
MEM2 ACT TIMERELAY DRIVE▼ ▼ ▼ ▼▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼OFF
LOAD ON
POWER ON
H ALARM OUT
L ALARM OUT
CC STATUS
CV STATUS
SEQ TRIG OUTSEQ STATUS

Step 4Loop 2 times

The pre-charge function allows 5% of the rated current to flow in CC mode
until the set CV voltage is reached. This function can be used to charge DC
link capacitors during inverter evaluation in OBC development or charge theDC link capacitor for DC/DC converter evaluation to a desired voltage before
starting discharge tests. This suppresses inrush current and prevents battery
and DUT device deterioration. In addition, when conducting system verification with the PXZ as a battery simulator, the pre-charge function can beused to raise the voltage to a set level in advance, avoiding a situation where
the test cannot be started due to false system diagnostics (wire breakage,battery failure, etc.).
*The interlock must be released and precharge enabled.

Inrush current

Pre-charge

AC/DC
or
DC/DC

Function

Analog input

General-purpose isolated digital input(Ch.1 to ch.5)

Time

Program 1

Step 3● Pre-charge Function*

DigitalDigital11

Step 2Loop 1 time

712

Voltage setpoint

Step 1

8

Method4

Prog● I-V Characteristic Function
By registering multiple arbitrary points on the I-V characteristics, arbitrary
I-V characteristics can be set for each CC and CV operation mode. Arbitrary
points can be registered from 3 to 100, making it possible to simulate the I-V
characteristics of rechargeable batteries and other devices.
PXZ20K-1500
PointsCC mode setting example
Voltage [V]Current [A]

1

0

0.000

2

150

0.130

3

300

0.520

4

450

1.170

5

600

2.080

6

750

3.250

7

900

4.680

8

1050

6.370

9

1200

8.320

10

1350

10.53011

1500

13.00014.000PV

BATTERY

I-V curve[A]

12.00010.000
8.000
6.000
4.000
2.000
0.000

0

150

300

450

600

750

900

[V]
1050 1200 1350 1500

FC

Performance / Functions

PX
Z

Regenerative
Electronic Load

● Equipped with Standard LAN Interface and VMCB Function
The PXZ series is equipped with LAN, USB, and RS232C interfaces as standard features. By using
the feature of virtual multi-channel bus (VMCB), it allows you to control remotely and monitoring for1-to-N as well as N-to-M for large-scale networks. This feature can also be used to save communication ports or to synchronize the control timing of multiple PXZ series units (up to 8 units). The PXB
series manufactured by our company can also be mixed and matched for multi-channel connection.

Communication monitoring function

When connecting the VMCB master unit via LAN

This function monitors the communication status.
For example, the alarm will be activated and the output will be turned off when the
LAN cable is disconnected and the communication is not being confirmed within
the specified time of setting. This function protects the operation from the uncontrolled condition, and it improves the system reliability.

Switching hub/Broadband router
LAN
PC

Straight cable
To LAN connector

VMCB master unit
Channel 0

SERIESVMCB slave unit
Channel 1

VMCB slave unit
ChannelSame domain number● Security for LAN connections
Access to the built-in web server can be restricted with a password. Also, when using VXI-11, HiSLIP, and SCPI-RAW for control, host restrictions can be set with the IP
address. It is possible to prevent access from any terminal other than the ones registered as a host (up to 4 hosts can be registered).

● Up to 10 Units can be Operated in Parallel,
Achieving 200 kW*
Intake and exhaust on thefront and back only, allowing
for close mounting

Including master machine, up to 10 units(200 kW) can be operated in parallel.
Connection is with one-control parallel
operation, and the panel of the mastermachine can control and display theentire system. With the automatic recognition function, the need for complicatedsettings is eliminated, allowing the construction of high-capacity systems.

● Data Logging Function
The data logging function allows the user to log measurement values (voltage, current, power, elapsed time, integrated current, and integrated power)
in the internal memory, and display logged data on a list and graph forms.
By setting measurement recording conditions, you can control the timing thatmeasurements are recorded.

* Parallel operation is possible between models
with different input rated voltages.
● Please contact us if you wish to operate morethan 10 units in parallel.

▲ List display example

Connection conceptual diagram
Slave machine
PARALLEL
Rack mounted image
OUT IN

Slave machine

Slave machine

Master machine

PARALLELOUT INPARALLELOUT INPARALLELOUT IN

Parallel operation connection cable

PC01-PXB● Saving Measurement Data

● Synchronized Operation
When the PXZ series units are connected to each other with a synchronous
operation signal cable, load on/off measurement and sequence synchronous
operation can be performed from any of the PXZ series devices.
Any of the PXZ series models can be connected to each other. Synchronized
operation is possible even when devices are operating in parallel.
● Synchronizing load on/off of multiple devices.
● Synchronizing measurements.
● Synchronizing the start time and resume time for sequences acrossmultiple units.
Connection
exampleIN
OUT▲ Graph display example

IN
OUT

Connect the OUT connector and IN connector of the EXT SYNC with asynchronized operation signal cables.

Measurement data can be stored in CSV format to a USB memory device.

● Selectable Power Input
Three-phase 3-wire 200 V or Three-phase 3-wire 400 V models are available.
Devices can be adapted to the international power supply requirements.

● Reliable and Solid Performance Even UnderHigh Temperatures
Solid performance under operating temperaturesof 0°C to 50°C (32 °F to 122 °F). Full performanceeven in harsh ambient temperature environments,
such as when installed in equipment.

50 ˚CContinuous
rated power
operation at

50˚C● Safety Protection Function• OVP (Over Voltage Protection)• OPP (Over Power Protection)• UVP (Under Voltage Protection)• OCP (Over Current Protection)• WDOG (Communication error protection)• EXT LOW (External input alarm detection)

5

Specifications
Unless specified otherwise, the specifications are for the following settings and conditions.
• The product is warmed up for at least 30 minutes.
The used terminology is as follows:• TYP: These are typical values that are representative of situations where the product operates in an environment with an ambient temperature of 23 °C (73.4 °F).
These values do not guarantee the performance of this product.
• setting: Indicates a setting.
• reading: Indicates a readout value.
• rating: Indicates a rated value.
• Open: Indicates equivalence to the state in which the DC INPUT terminals are opened.
• Vin: Indicates an input voltage.

●Rating
Item

PXZ20K-500

PXZ20K-1000

Rated power
Rated voltage (DC) *1
Rated current *1

PXZ20K-1500

20000 W
10 V to 500V

20 V to 1000 V

30 V to 1500 V

120 A

60 A

30 A

PXZ20K-500

PXZ20K-1000

PXZ20K-1500

525 V

1050 V

1575 V*1. Maximum input current and maximum input voltage are limited by maximum input power.

●Constant voltage (CV) mode
Item
Maximum settable voltage *1
Setting accuracy
Setting resolution±(0.2 % of setting + 0.1 % of rating)
0.05 V

0.1 V

Remote sensing Maximum compensation voltage(reciprocating) (TYP)

10 % of rating

Response switching

Slew rate switching (TYP) *1

0.1 V

FAST, SLOW
125 V/ms or more *2

250 V/ms or more *2

125 V/ms

250 V/ms

375 V/ms or more *2
375 V/ms

12.5 V/ms

25 V/ms

37.5 V/ms

1.25 V/ms

2.5 V/ms

3.75 V/ms

0.125 V/ms

0.25 V/ms

0.375 V/ms

PXZ20K-500

PXZ20K-1000

PXZ20K-1500+126 A+63 A+31.5 A

*1. During parallel operation, this will be the value multiplied by the number of units in the configuration.
*2. MAX will appear on the display.

●Constant current (CC) mode
Item
Maximum settable current *1
Setting accuracy *2±(0.75 % of rating)Setting resolution

0.01 A

0.005 A

0.002 A

Power fluctuation *3±240 mA±120 mA±60 mA

Load variation *4±240 mA±120 mA±60 mA

Rise time (TYP) *5

1 ms

Fall time (TYP) *6

1 ms

Response switching

FAST, SLOW

Slew rate switching (TYP) *1

120 A/ms or more *7

60 A/ms or more *7

60 A/ms

30 A/ms

30 A/ms or more *7
15 A/ms

30 A/ms

15.0 A/ms

7.5 A/ms

3 A/ms1.50 A/ms

0.75 A/ms

0.3 A/ms

0.150 A/ms

0.075 A/ms

*1. During parallel operation, this will be the value multiplied by the number of units in the configuration.
*2. Applies to a range of 1 % to 100 % of the rated current.
*3. 180 Vac to 252 Vac for 200 Vac input, 342 Vac to 504 Vac for 400 Vac input. At the constant load.
*4. This is the amount of change when the voltage is changed from the rated voltage and rated power to 1/10 of the rated voltage.
*5. In the case that the CC mode response setting is set to FAST. The time required for the input current in CC mode to change from 10 % to 90 % of the rated current when the input current value is changed from 0 % to 100 % of the rated current. When the slew rate is set to MAX.
*6. In the case that the CC mode response setting is set to FAST. The time required for the input current in CC mode to change from 90 % to 10 % of the rated current when the input current value is changed from 100 % to 0 % of the rated current. When the slew rate is set to MAX.
*7. MAX will appear on the display.

●Constant resistance (CR) mode
Item

PXZ20K-500

PXZ20K-1000

Conductance rating

2400.0 mS

600.000 mS

200.000 mS

0 mS to 2520.0 mS

0 mS to 630.000 mS

0 ms to 210.000 mS

Setting range
Setting accuracy *1
Setting resolution

PXZ20K-1500±(0.5 % of setting + 0.5 % of rating)
0.20 mS

0.05 mS

Response switching

0.02 mS

FAST, SLOW

*1. Converted value at the input current.

●Constant power (CP) mode
Item

PXZ20K-500

PXZ20K-1000

Maximum settable power

21000 W

Setting accuracy *1±(0.5 % of power rating + 0.5 % of current rating × Vin)

Setting resolution

2W*1. Guaranteed in the range from 5 % to 100 % of rated power. Rating indicates the rated current value.

6

PXZ20K-1500

Specifications●200 V three-phase three-wire input

Specifications for models having an input voltage rating of 200 Vac.

Item

PXZ20K-500

PXZ20K-1000

Nominal AC input rating

200 Vac to 240 Vac, 50 Hz to 60 Hz

AC Input voltage range

180 Vac to 252 Vac

AC Input frequency range

47 Hz to 63 Hz

AC Input current (MAX) *1

80 A (When Input voltage is 180 V)

AC Input power (MAX) *1

22 kVA

Inrush current (TYP) *2

90 A

Power factor (TYP) *1

PXZ20K-1500

0.96

Input hold time

10 ms or more

*1. At the rated input power for the rated input current.
*2. Maximum peak current value when the POWER switch is turned on. (Excluding the surge current to the input filter capacitor.)●400 V three-phase three-wire input

Specifications for models having an input voltage rating of 400 Vac.

Item

PXZ20K-500

PXZ20K-1000

Nominal AC input rating

380 Vac to 480 Vac, 50 Hz to 60 Hz

AC Input voltage range

342 Vac to 504 Vac

AC Input frequency range

47 Hz to 63 Hz

AC Input current (MAX) *1

40 A (When Input voltage is 342 V)

AC Input power (MAX) *1

22 kVA

Inrush current (TYP) *2

70 A

Power factor (TYP) *1

PXZ20K-1500

0.96

Input hold time

10 ms or more

*1. At the rated input power for the rated input current.
*2. Maximum peak current value when the POWER switch is turned on. (Excluding the surge current to the input filter capacitor.)●Display
Item
Voltmeter
Ammeter
Wattmeter

Maximum display

PXZ20K-500

PXZ20K-1000

PXZ20K-1500±600.00 V±1200.00 V±1800.00 V

Display accuracy
Maximum display±(0.1 % of reading + 0.2 % of rating)±168.000A±42.000A±(0.75 % of rating)

Maximum display *1±24.000 kW

Display accuracy

Display the integrated value of voltmeter and ammeter

Load ON / OFF

The LOAD LED on the front panel lights in green

Operation mode

Indicate the followings on the upper left part of the display
CV: CV icon, CC: CC icon, CR: CR icon, CP: CP icon

Remote (LAN)Operation
display±84.000 A

Display accuracy

Indicate the followings on the upper left part of the display

Alarm

Indicate the details of activated protection function on the display

SCPI error

Indicate the error occurring at present on the display

POWER off

Indicate residual charge warning and an instruction to turn off the display, then reboot

Key lock

Indicate the key lock status on the upper right part of the display

Sensing

When sensing is enabled, indicate the sensing icon on the upper right part of the display

During parallel operation
External control

Displaying the slave state on the slave unit
When digital input/output is enabled, indicate the EXT icon on the upper right part of the display*1. The unit will be W if it is less than 10 kW.

●Protection Specifications LOW alarm
Item

An alarm not requiring a reboot to be cleared.
PXZ20K-500

Protection operation
OVP (overvoltage protection)

Setting range

50 V to 550 V

Setting accuracy
Setting resolution
Setting range

0.05 V

0.1 V

6 A to 66 A

3 A to 33 A±(0.75 % of rating)
0.01 A

0.005 A

0.002 A

Load off, indicate “OPP” on the display. SLV OPP is displayed on the slave unit.

Setting range

2 kW to 24 kW

Setting accuracy±(1.0 % of power rating + 1.0 % of current rating × Vin)

Setting resolution

2W

Protection operation

Load off, indicate “UVP” on the display. SLV UVP is displayed on the slave unit.

Setting range
UVP (undervoltage protection)

150 V to 1650 V

0.1 V

12 A to 132 A

Protection operation
OPP (overpower protection)

100 V to 1100 V

Load off, indicate “OCP” on the display. SLV OCP is displayed on the slave unit.

Setting accuracy
Setting resolution

PXZ20K-1500±(0.1 % of setting + 0.2 % of rating)Protection operation
OCP (overcurrent protection)

PXZ20K-1000

Load off, indicate “OVP” on the display. SLV OVP is displayed on the slave unit.

0 V to 500 V

Selectable
Setting accuracy
Setting resolution
Protection operation

Watchdog Alarm (CommunicaSetting range
tion error protection)
Selectable

External Alarm LOW Level
Protection operation(external input alarm detection)

0 V to 1000 V

0 V to 1500 V

Enable/Disable±(0.1 % of setting + 0.2 % of rating)
0.05 V

0.1 V

0.1 V

Load off, indicate “WDOG” on the display
1 s to 3600 s
Enable/Disable
Load off, indicate “EXT LOW” on the display

7

Specifications●Protection Specifications HIGH alarm

An alarm requiring a reboot to be cleared.

Item

PXZ20K-500

PXZ20K-1000

PXZ20K-1500

Reverse Alarm (Reverse-connection detection protection)

Protection operation

OHP (Overheat protection)

Protection operation

Load off, indicate “OHP” on the display. SLV OHP is displayed on the slave unit.

Protection operation

Load off, indicate “LOVP” on the display. SLV LOVP is displayed on the slave unit.

Line OVP(Grid overvoltage protection)

Load off, indicate “REVE” on the display

Input voltage rating 200 Vac model: 200 V to 258 V
Input voltage rating 400 Vac model: 380 V to 516 V

Setting range

Line UVP(Grid undervoltage protection)Line Frequency Error (Grid abnormal frequency protection)

Protection operation

Load off, indicate “LUVP” on the display. SLV LUVP is displayed on the slave unit.
Input voltage rating 200 Vac model: 175 V or less.
Input voltage rating 400 Vac model: 333 V or less.

Setting range
Protection operation

Load off, indicate “FREQ” on the display. SLV FREQ is displayed on the slave unit.

Detection value

42 Hz/68 Hz

External Alarm HIGH Level (ExterProtection operation
nal input alarm detection)
SENS Alarm (incorrect sensing
connection detection)

Load off, indicate “EXT HIGH” on the display

Protection operation

Load off, indicate “SENS” on the display

Setting range

Enable/Disable

Parallel Communication Error(Parallel operation communication Protection operation
error detected)

Load off, indicate “PARA COM” on the display

Para Other Slave Alarm (Parallel
operation slave error occurred)Protection operation

Load off, indicate “SLV OTHR” on the display

Incorrect Slave Alarm (Notapplicable device connected)

Protection operation

Load off, indicate “SLV INC” on the display

Too many connections (Toomany parallel connections)Protection operation

Load off, indicate “TOO MANY” on the display

Hardware ERR *1(Hardware error)

Protection operation

Load off, indicate “ERRH” on the display. SLV ERRH is displayed on the slave unit.

Software ERR *2(Software error)

Protection operation

Load off, indicate “ERRS” on the display. SLV ERRS is displayed on the slave unit.

*1. It occurs when an abnormality related to the hardware is detected and the internal unit comes to an emergency stop.
*2. It occurs when an abnormality related to the software is detected and the internal unit comes to an emergency stop.

●External analog I/O
Item

PXZ20K-500
Input points

PXZ20K-1000

PXZ20K-1500

2 points
Setting range

Voltage (CV) control

Input voltage range

Current (CC) control
Power (CP) control
Resistance (CR) control *1

Setting range

Input

0 % to 100 % of the rated voltage
0 V to 5 V or 0 V to 10 V (Selectable)

Accuracy±(1 % of rating)
0 % to 100 % of the rated current, rated power and rated conductance

Input voltage range

0 V to 5 V or 0 V to 10 V (Selectable)

Accuracy±(1 % of rating)

Output points

2 points

Voltage monitor (VMON)
OutputOutput range

0 % to 100 % of the rated voltage

Output voltage

0 V to 5 V or 0 V to 10 V (Selectable)

Accuracy
Current monitor (IMON)±(1 % of rating)

Output range

0 % to 100 % of the rated current

Output voltage

0 V to 5 V or 0 V to 10 V (Selectable)

Accuracy±(1 % of rating)*1. Select either current control or power control.

●External digital input
Item

PXZ20K-500

Fixed input points
Selected input points

Photocoupler isolated input (Applicable to both current sink / source output)
ALARM IN
OFF

Selecting function

HIGH alarm occurrence
Do not use terminals

LOAD ON

Turn on the load

LOAD OFF

Turn off the load

LOAD CTRL

Turn on of off the load

L ALARM IN

LOW alarm occurrence

ALARM CLR

LOW alarm clearance

SEQ RUN

Sequence start/end

SEQ PAUSE

Sequence pause/resume

SEQ TRIG IN

Input the trigger for sequence

ACQUIRE TRIG

Input the measurement trigger

MEM1 RECALL

Recall preset memory 1

MEM2 RECALL

Recall preset memory 2

INTEG CTRL

Starting/stopping integration measurement

INTEG RESET

Resetting integration measurement data

External circuit power supply range

8

PXZ20K-1500

5 points (Polarity switchable)

Input form
Fixed function

PXZ20K-1000
1 point (Polarity switchable)

12 V to 24 Vdc (±10 %)Specifications●External digital output
Item

PXZ20K-500

Output points

PXZ20K-1000

PXZ20K-1500

6 points (Polarity switchable)

Output form

Semiconductor relay output
OFF

Selecting function

Do not use terminals

LOAD ON

Outputs a signal when load is turned on

POWER ON

Signal is output when power supply is on and load is possible

H ALARM OUT

Output a signal when a HIGH alarm occurs

L ALARM OUT

Output a signal when a LOW alarm occurs

CC STATUS

Output a signal when operating in the CC mode

CV STATUS

Output a signal when operating in the CV mode

SEQ TRIG OUT

Output the trigger for sequence

SEQ STATUS

Signal is output while the sequence is running

EXT DIN BUSY

Output a signal when the digital input is in BUSY status

MEM1 ACT TIME

Signal is output when the setting is completed for preset memory 1

MEM2 ACT TIME

Signal is output when the setting is completed for preset memory 2

RELAY DRIVE

Links with load on/off and outputs a signal with a time difference of approx. 100 ms.
You can set this parameter to only Ch.6.

●Communication Specifications
Item

PXZ20K-500

Commonspecifications

RS232CIEEE std. 488.2-1992

Command language

Complies with SCPI Specification 1999.0

Program message terminator

USB (host)LAN

PXZ20K-1500

D-SUB 9-pin connector
Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Data length: 8 bits, Stop bits: 1 bit, Parity bit: None
Flow control: No, CTS-RTS

HardwareHardwareUSB (device)

PXZ20K-1000

Software protocol

LF during reception, LF during transmission
Standard type B socket. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)

Program message terminator

LF or EOM during reception, LF + EOM during transmission

Device class

Complies with the USBTMC-USB488 device class specifications

HardwareStandard type A socket. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)

HardwareIEEE 802.3 100BASE-TX or 10BASE-T Ethernet

Communication protocol
Program message terminator

SCPI-RAW, SCPI-Telnet, HiSLIP, VXI-11
HiSLIP: LF or END during reception, LF + END during transmission. SCPI-RAW: LF during reception, LF during transmission

Compliant standards

LXI Version 1.5 Specifications 2016

Panel explanation
Touch panel display
Display the settings, measured values, and otherinformation. Use the touch panel to operate.

POWER switch

LOAD key

USB port (host)

SENSING connector
EXT CONT connector*Not for control.

For remote sensing.

For external control.

RS232CFor remote control. LAN

USB

AC INPUT terminal block
Used to connect the power cord.

PARALLEL connector
For parallel operation.

EXT SYNC connector
For synchronized operation.

DC INPUT terminal
Used to connect the DUT and the product.

9Specifications●Others
Item
Synchronization
function (clock
synchronization)

PXZ20K-500
Overview
Sequence synchronization
Measurement synchronization
Load synchronization
Operation mode
Maximum number of programs

Sequence function

Maximum number of steps
Step execution time
Loop countSine function

1 Hz to 10 Hz

2 Hz

120 Hz to 1000 Hz

20 Hz

Maximum setting
Maximum offset setting
Maximum setting
Maximum offset setting

Setting range up to 105 % of rated current

1 Hz to 1000 Hz

CV

1 Hz to 10 Hz

0.01 Hz

12 Hz to 100 Hz

0.1 Hz120 Hz to 1000 Hz

1 Hz

High level
Low level
High level
Low level
High level
Low level

Connection between the master unit
and a PC

Setting range up to 105 % of rated voltage
Setting range up to 105 % of rated current
Setting range up to 105 % of rated conductance
2.5 % to 97.5 %1 ms to 2000 ms
1 ms
LAN, USB, RS232C

Connection with slave unitsLAN

Measurement start condition(trigger source)

Conditions for starting measurement can be selected (when inputting from display, when inputting commands byremote control, when inputting signals by external control, when operating in synchronization, and when load off)

Number of measurements

1 to 65536

Measurement Setting range
delay time
Setting resolution

0 s to 100 s

Measurement Setting range
interval
Setting resolution

0.1 ms to 3600 s

Measurement Setting range
time
Setting resolution

0.1 ms to 1 s

Operation mode

CV/CC mode

Number of setup items
Number of memory entries
Saved setting
Number of memory entries

Saved setting

0.1 ms
0.1 ms
0.1 ms3 to 100 items (interpolated between points with straight lines)
20
Values in CV, CC, CP, and CR modes, and protection function values
21
Load on/off, Input voltage value/Input current value/Input power value/Conductance value,
Input mode, Response, Slew Rate, Priority operation mode (Priority when load is ON),
Value of the pulse function (Duty, Frequency, High, Low),
Value of the sine function (Amplitude, Frequency, Offset),
Number of I-V characteristics (Count), Over voltage protection (OVP),
Under voltage protection (UVP, UVP Enable), Over current protection (OCP, Delay),
Over power protection (OPP), Line overvoltage protection (Line OVP),
Measurement trigger settings (Source, Count, Delay, Enable, Timer),Integration settings (Gate, Reset)

Level 1

Load on/off and preset memory recall are available

Level 2

Load on/off are available

Level 3

Load off is available

Number of units in parallel operation
Maximum settable voltage
Pre-charge function *1 Voltage setting accuracy
Current setting accuracy *2*1. Release the interlock.
*2. Fixed set value of 5 % of rated current.

10

Setting range up to 105 % of rated voltage

CV/CC/CR mode

Over current protection Setting range(OCP) delay function
Setting resolution

Key Lock

0.2 Hz

12 Hz to 100 Hz

Duty cycle

Setup Memory

1 ms to 3600000 s
1 to 100000, or infinite

Operation modeCR

Preset value Memory

30
10000

Frequency setting range

CC

I-V characteristic
function

CV, CC, CR and CP modes

CV/CC mode

Frequency
precision
setting

Measurement trigger

Synchronization of load ON/OFF

1 Hz to 1000 Hz

CC

Multichannel (VMCB)
function

Synchronization of the measurement start

Operation mode
Frequency
precision
setting

PXZ20K-1500

Synchronization of the program start and step start.

Frequency setting range

CV

Pulse function

PXZ20K-1000

SYNC icon is displayed on the display when synchronization is established with the internal clock after connectingwith other PXZ series using the EXT SYNC connector.

Up to 10 units
105 % of voltage ratings±(0.2 % of setting + 0.1 % of rating)±(1.0 % of rating)Specifications●General Specifications
Item

PXZ20K-500

PXZ20K-1000

PXZ20K-1500

WeightApprox. 38 kg (83.78 lbs)

Approx. 37 kg (81.57 lbs)

Approx. 37 kg (81.57 lbs)

430 (16.93)(MAX455 (17.91))W × 128 (5.04)(MAX160 (6.30))H × 720 (28.35)(MAX980 (38.58))D mm (inches)
Refer to Outline Drawing

Dimensions
Operating environment

Indoor use, Overvoltage category II

Operating temperature
Environmental conditions

0 °C to +50 °C (32 °F to +122 °F)

Operating humidity

20 % rh to 85 % rh (no condensation)

Storage temperature-25 °C to +60 °C (-13 °F to +140 °F)

Storage humidity

90 % rh or less (no condensation)

Altitude

Up to 2000 m

Cooling system

Forced air cooling using fan

Accessories

AC INPUT terminal cover, External control connector kit (1 set), Chassis connection wire,
DC INPUT terminal cover, DC INPUT terminal screws (1 pair), EXT SYNC connector cover,
SENSING connector cover, SENSING connector (2 pc.), Synchronized operation signal cable kit,
Safety Information (1 copy), China RoHS sheet (1 sheet), Getting Started Guide (1 copy),
Heavy object warning label (1 piece)
Between primary and FG

Withstand voltage

2200 Vac for 1 minuteBetween primary and secondary
Between secondary and FG

Insulation resistance

1800 Vdc for 1 minute1800 Vdc for 1 minuteBetween primary and FG

3000 Vdc for 1 minute

30 MΩ, 500 Vdc

Between primary and secondary

30 MΩ, 1000 Vdc

Isolation voltage±1000 V

±1000 V

+2000 V/-1000 V

Electromagnetic compatibility (EMC) *1 *2

Complies with the requirements of the following directive and standards.
EMC Directive 2014/30/EU
EN 61326-1 (Class A *3)

Safety *1

Complies with the requirements of the following directive and standards.
Low Voltage Directive 2014/35/EU *2
EN 61010-1 (Class I *4, Overvoltage category II, Pollution Degree 2 *5)*1. Does not apply to specially ordered or modified products.
*2. Only for models with CE marking / UKCA marking on their body.
*3. This is a Class A instrument. 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 the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts.
*4. This is a Class I instrument. Be sure to ground this product's protective conductor terminal. The safety of this product is guaranteed only 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 or surface resistivity. Pollution Degree 2 assumes that only non-conductive pollution will occur except for an occasional temporary conductivity caused by condensation.

*Maximum dimensions include protrusions and accessory covers.

60 (2.36)

310 (12.20)

300 (11.81)

50 (1.97)

31(1.22)

8-M4 screw holes (including opposite face)(Max. screw insertion depth: 6 mm)*

70(2.76)
27(1.06)

430 (16.93)

MAX455 (17.91)

128 (5.04)
MAX160 (6.30)

MAX15(0.59)

5-M4 screw holes
Max. screw insertion depth: 6 mm (2.38 in.)

169 (6.65)

ø45 (1.78)

181 (7.13)

40 (1.57)

350 (13.78)

40 (1.57)●Outline Drawing

22.5

MAX45 (0.89)(1.78)

688.5 (27.11)

720 (28.35)
MAX845 (33.27)

MAX980 (38.58)
Unit: mm (inches)* The number of holes in the busbars varies depending on the model.

11Ordering information● Example of 100 kW system configuration (1500 V)
Product name

Model nameVolumeHigh-capacity regenerative electronic load

PXZ20K-1500

5

Parallel operation cable

PC01-PXB

4

Rack mount bracket

KRB3-TOS

5● Example of 200 kW system configuration (1500 V)
Model nameVolumeHigh-capacity regenerative electronic load

Product name

PXZ20K-1500

10

Parallel operation cable

PC01-PXB

9Rack mount bracket

KRB3-TOS

10* Rack for mounting PXZ main unit, power cables for 3-phase input, and load cables available separately.
* We can rack up the system and provide as a customer-specific solution. (Sold separately)

Options● Parallel operation signal cable kit
PC01-PXB (Cable length: 1.5 m)● GPIB converter
PIA5100 (Power cord set: 1 set, Magnetic sheet: 1 sheet)● Rack mount bracket
KRB3-TOS (EIA inch rack standard)
KRB150-TOS (JIS millimeter rack standard)● Load cable
Model name

Length

DC80-2P3M-M10M10
HV22-2P3M-M12M8

Maximum allowable current

Terminal size

200 A

M10/M10

PXZ20K-500

80 A

M12/M8PXZ20K-1000, PXZ20K-1500

3m

Applicable models● Three-phase input power cord * The switchboard ends of the power cords have not been prepared for connection.
Model name

LengthNominal cross-sectional area

Terminal size

Applicable models

AC22-4P3M-M6C-4S

3m

22 mm2

M6

All models● Distributor:

1-1-3, Higashiyamata, Tsuzuki-ku, Yokohama, Kanagawa, 224-0023, Japan
Phone:(+81)45-593-0200, Facsimile:(+81)45-593-7591, https://global.kikusui.co.jp/

KIKUSUI AMERICA, INC.
3625 Del Amo Blvd., Suite 160 Torrance, CA90503
Phone: 310-214-0000, Facsimile: 310-214-0014

KIKUSUI TRADING (SHANGHAI) Co., Ltd.
Room 305, Shenggao Building, No.137, Xianxia Road, Shanghai City, China
Phone: 021-5887-9067, Facsimile: 021-5887-9069

KIKUSUI ELECTRONICS EUROPE GmbH
Grossenbaumer Weg 8, 40472 Duesseldorf, Germany
Phone: +49(211)54257600, E-mail: support@kikusui-europe.com
For our local sales distributors and representatives, please refer to "sales network" of our website.

Printed in Japan■ All products contained in this catalogue are equipment and devices that are premised on use under the supervisionof qualified personnel, and are not designed or produced for home-use or use by general consumers. ■ Specifications, 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 fidelity inprinting. ■ 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 find any misprints or errors in thiscatalogue, 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: Aug. 2024 202408PDFEC21