Kikusui PWR401L User manual

User’s Manual
PART NO. IB031113
Aug. 2017
400W model
PWR401L PWR401ML
PWR401MH PWR401H
800W model
PWR801L PWR801ML
PWR801MH PWR801H
1200W model
PWR1201L PWR1201ML
PWR1201MH PWR1201H
Regulated DC Power Supply
PWR-01 Series
Component Names 8
Installation and Preparation 13
Connecting the Power Cord 14
Load Considerations 18
Selecting the Load Cables 20
Output Terminal Insulation 22
Connecting to the Output Terminals 24
Turning the Power On 28
Remote Sensing function 30
Basic Features 33
Measured Value Display and Setting Display
34
Panel Operations 36
Output Operation 37
Operation Overview 41
CV Power Supply and CC Power Supply 43
Using the PWR-01 as a CV or CC Power
Supply 45
Protection functions and Alarms 46
CONFIG Settings 54
Preset Memory function 70
Locking Panel Controls (Key Lock) 71
CONFIG Shortcut function 72
Switching from Remote Mode to Local Mode
73
Advanced Features 75
Bleeder Circuit function 76
Variable Internal Resistance function 78
Sequence function 79
Synchronized Operation 80
External Control 83
Product Operation 84
About the J1/ J2 Connectors 85
Notes for Connecting External Voltage (Vext)
88
Output voltage control 90
Output Current Control 92
Controlling the Output On and Off States 94
Controlling Output Shutdown 96
Controlling the Clearing of Alarms 97
External Monitoring 98
Parallel/ Series Operation 101
Master-Slave Parallel Operation 102
Series operation 108
Maintenance 113
Calibration 114
Cleaning 116
Specifications 117
400W model 119
800W model 122
1200W model 125
Common specifications 128
Appendix135

2PWR-01
These manuals are intended for users of the Regulated DC
Power Supply and their instructors. Explanations are given
under the presumption that the reader has knowledge of the
electrical aspects of regulated DC power supplies.
PWR-01 manual construction
User’s manual (this manual, PDF)
This manual is intended for first-time users of this product. It
provides an overview of the product, notes on usage, and
specifications. It also explains how to configure the product,
operate the product, perform maintenance on the product,
and so on.
Please read this manual before you operate the product.
Communication interface manual (PDF)
This manual describes remote control and multichannel
(Virtual Multi Channel Bus).
The interface manual is written for readers with sufficient
basic knowledge of how to control power supplies using a
PC.
Quick Reference
This document briefly explains the PWR-01 panel and the
basic operation of it.
Safety Information
This document contains general safety precautions. Keep
them in mind and make sure to observe them.
PDF files are included in the accompanying CD-ROM.
You can view the PDF files using Adobe Reader.
Firmware versions that this manual covers
This manual applies to products with firmware versions 1.0X.
When contacting us about the product, please provide us with
the following information.
Model (marked in the top section of the front panel)
Firmware version (see page 28)
Serial number (displayed on the top panel).
Trademarks
Microsoft, Internet Explorer, and Windows are registered
trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
All company names and product names used in this manual
are trademarks or registered trademarks of their respective
companies.
Copyrights
The contents of this document may not be reproduced, in
whole or in part, without the prior consent of the copyright
holder.
The specifications of this product and the contents of this doc-
ument are subject to change without prior notice.
© 2017 Kikusui Electronics Corporation
About the PWR-01 Manuals
Accessories
Packing list (1 copy)
Safety Information (1 pc.)
CD-ROM (1 disk)
Output terminal M8 bolt set
(2 sets)
Output terminal M4 screws
(2 pcs.)
Chassis connection short bar (1 pc.)
Output terminal cover (1 set)
or or
Included only with the 400W/800W model
Included only with the 1200W model
[E3-300-064]
* Only L type and ML type included.
Quick Reference
(Japanese: 1 pc, English: 1 pc.)
Power cord (1 pc.)
Rating: 125 Vac
Plug: NEMA5-15
Rating: 250 Vac
Plug: CEE7/7
Length: Approx. 2.5 m
[85-10-1070]
Rating: 250 Vac
Plug: GB1002
Length: Approx. 2.5 m
[85-10-0791]
The attached power cord varies
depending on the shipment destination.
Bottom [Q1-500-200]
Top [Q1-500-198]
Adapter [Q1-500-199]
• 400W model:
Length: Approx. 2.5 m
[85-AA-0004]
• 800W model:
Length: Approx. 3.0 m
[85-10-1030]
[M3-112-027]
[M1-100-012]
[M4-100-007]
[M5-100-007]
[M5-101-007]
Input terminal cover (1 set) Ferrite core set (1 set)
[M3-112-018]
[M3-112-015]
[P4-000-551]
[96-01-0370]
[D6-750-001]
[P1-000-410]

PWR-01 3
The PWR-01 series is a constant voltage (CV)/constant cur-
rent (CC) automatic crossover power supply that can output a
wide range of voltage and current within rated output power.
The products in this series are divided into the following three
models depending on the output capacity. They are divided
into four types depending on the output voltage.
Features
Communication function
RS232C, USB, and LAN interfaces are all installed as stan-
dard.
The remote interfaces comply with IEEE Std 488.2 1992
and SCPI Specification 1999.0.
The LAN interface complies with the LXI standard. Multi-
channel (VMCB), which controls up to 31 PWR-01s from a
single PC, can be used to construct a multichannel power
supply system.
Master-slave parallel operation
You can increase the output current by connecting up to
three PWR-01s (two units for the 1200W model) in parallel.
You can set one unit as the master unit, and control the
remaining units as slave units.
If an error occurs in a slave unit, the master unit detects the
alarm and shuts down the output of the entire system.
Setting preset memory function
You can save up to three sets of output settings (the combi-
nation of the voltage, current, OVP, OCP, and UVL). You
can simply select a set of output settings that you want to
use rather than having to specify each setting every time.
Automatic output-on setting
You can set the PWR-01 so that when a low AC input pro-
tection function (AC-FAIL) is activated and the output is
turned off, the output is automatically turned back on when
the problem that caused the output to turn off is fixed.
Output-on/off delay function
You can set the delay (DELAY TIME) from when the OUT-
PUT key is turned on or off to when the output actually turns
on or off. This is useful when you want to turn the output on
or off by setting a delay according to the load characteris-
tics.
Set voltage/current limitation function
You can apply limits to the voltage and current settings. This
prevent you from setting an appropriate value by mistake,
which would cause the output to turn off.
Overcurrent protection (OCP) detection time setting
You can set the amount of time that an overcurrent must
persist after the first detection of the overcurrent before the
overcurrent protection (OCP) is activated. If inrush current
from the load causes an excessive current to flow temporar-
ily, you can adjust the delay to prevent the overcurrent pro-
tection (OCP) from being activated.
Bleeder circuit function
You can turn the bleeder circuit on and off. Turn the bleeder
circuit off when you do not want the internal bleeder circuit
to sink output current. When you connect a battery, you can
prevent excessive electrical discharges by turning the
bleeder circuit off.
Soft start/ stop function
You can limit the rise time of the load current for loads that
produce inrush current when the output is turned on.
Variable internal resistance function
You can easily simulate rechargeable batteries, solar bat-
teries, fuel cells, and other power supplies that have internal
resistance. By setting the internal resistance value in con-
stant voltage (CV) mode, you can decrease the output volt-
age according to the output current.
Sequence function
The sequence function recalls conditions set in a program
and runs automatically. If you write a program created on a
PC into the PWR-01, you can execute the program from the
panel.
When a program is written in the PWR-01, you can execute
the program without a PC.
CONFIG setting shortcut function and display
You can register CONFIG setting parameters to the front
panel’s SC keys. Because you do not have to go into the
CONFIG menu to set the parameters, you can perform tests
efficiently by registering CONFIG parameters that you use
frequently. Up to three parameters can be registered.
400W model 800W model 1200W model
L type
(40 V) PWR401L PWR801L PWR1201L
ML type
(80 V) PWR401ML PWR801ML PWR1201ML
MH type
(240 V) PWR401MH PWR801MH PWR1201MH
H type
(650 V) PWR401H PWR801H PWR1201H
Product Overview

4PWR-01
When using this product, be sure to observe the “Safety
Precautions” in the Safety Information manual.
When installing this product, be sure to observe the
“Precautions Concerning Installation Location” in the Safety
information manual. The following precautions pertain only to
this product.
• When installing this product, be sure to observe the tem-
perature and humidity ranges indicated below.
Operating temperature range: 0 °C to +50 °C (32 °F to
122 °F)
Operating humidity range: 20 %rh to 85 %rh (no conden-
sation)
• When storing this product, be sure to observe the tempera-
ture and humidity ranges indicated below.
Storage temperature range: -10 °C to +60 °C (14 °F to
140 °F)
Storage humidity range: 90 %rh or less (no condensation)
• In this guide, the suite of products shown on the front cover
is also referred to as the “PWR-01.”
• The term “PC” is used to refer generally to both personal
computers and workstations.
• The illustrations of displays used in this manual may differ
from the actual displays. The illustrations are merely exam-
ples.
• The following markings are used in the explanations of this
text.
Indicates a potentially hazardous situation which, if
ignored, could result in death or serious injury.
Indicates a potentially hazardous situation which, if
ignored, may result in damage to the product or other
property.
Indicates information that you should know.
Explanation of terminology or operation principle.
Indicates a reference to detailed information.
Indicates a reference to a manual containing detailed
information.
CFxx: x
“CF” indicates that this is a CONFIG parameter. The two
digits after CF indicate the CONFIG parameter number.
The value after the colon indicates the selected setting.
SHIFT+key name (blue letters)
Indicates an operation that requires you to press a key
indicated in blue characters (below the key) while holding
down SHIFT.
Indicates useful information.
Safety Precautions
Precautions Concerning
Installation Location
Notations Used in This Manual
WARNING
CAUTION
DESCRIPTION
See
Memo

PWR-01 5
Contents
About the PWR-01 Manuals ..................2
Accessories ...........................................2
Product Overview ..................................3
Features ................................................3
Safety Precautions .................................4
Precautions Concerning Installation
Location .................................................4
Notations Used in This Manual ..............4
Component Names.................................8
1
Installation and Prepara-
tion
Connecting the Power Cord ....................... 14
400W model/ 800W model.................. 14
1200W model ...................................... 15
Load Considerations .................................. 18
Selecting the Load Cables ......................... 20
Output Terminal Insulation ......................... 22
When the output terminal is not grounded
(floating) .............................................. 22
When the output terminal is grounded 23
Connecting to the Output Terminals .......... 24
Connecting to the rear-panel output
terminals.............................................. 24
Connecting to the front-panel output
terminals.............................................. 27
Turning the Power On................................ 28
Turning on the POWER switch............ 28
Turning the POWER switch off............ 29
Remote Sensing function........................... 30
2
Basic Features
Measured Value Display and Setting Display ..
34
Panel Operations ....................................... 36
Output Operation........................................ 37
Output on/off setting at power-on ........ 37
Output-on startup state parameter ...... 37
Output-on/ off delay setting ................. 38
Soft start/ stop function........................ 39
Operation Overview ................................... 41
CV Power Supply and CC Power Supply... 43
Using the PWR-01 as a CV or CC Power
Supply ........................................................ 45
Protection functions and Alarms ................ 46
Alarm occurrence and clearing alarms 46
Setting the protection functions........... 47
Setting limits ........................................ 52
CONFIG Settings ....................................... 54
CONFIG parameter details.................. 58
Preset Memory function ............................. 70
Saving settings .................................... 70
Recalling settings ................................ 70
Locking Panel Controls (Key Lock) ............ 71
CONFIG Shortcut function ......................... 72
Registering CONFIG shortcuts............ 72
Using CONFIG shortcuts..................... 72
Switching from Remote Mode to Local Mode..
73
3
Advanced Features
Bleeder Circuit function .............................. 76
Variable Internal Resistance function......... 78
Sequence function ..................................... 79
Writing and executing a sequence
program ............................................... 79
Synchronized Operation............................. 80
4
External Control
Product Operation ...................................... 84
About the J1/ J2 Connectors...................... 85
Notes for Connecting External Voltage (Vext).
88
Output voltage control ................................ 90
Control using an external voltage (Vext) ..
90
Control using an external resistance (Rext)
91
Output Current Control............................... 92
Control using an external voltage (Vext) ..
92
Control using an external resistance (Rext)
93
Controlling the Output On and Off States .. 94
Controlling Output Shutdown ..................... 96
Controlling the Clearing of Alarms.............. 97
External Monitoring .................................... 98
5
Parallel/ Series Operation
Master-Slave Parallel Operation .............. 102
Features ............................................ 102
Connection ........................................ 104
Setting ............................................... 106
Starting master-slave parallel operation ...
107
Series operation ....................................... 108
Features ............................................ 108
Connection ........................................ 110

6PWR-01
Setting................................................ 111
Starting series operation .................... 111
6
Maintenance
Calibration................................................. 114
Calibration overview........................... 114
Calibration procedure......................... 115
Cleaning.................................................... 116
7
Specifications
400W model.............................................. 119
800W model............................................. 122
1200W model........................................... 125
Common specifications............................ 128
Appe
ndix
AFactory Default Settings.......136
BOptions......................................138
CTroubleshooting......................140

PWR-01 7
This page is intentionally blank.

8PWR-01
Component Names
Front panel
CV
CC
/ W
V
A
AL M RMT LOCK LAN
BCA
PRESET
DLY SEQ HBSSVIR
CV
CC
/ W
V
A
AL M RMT LOCK LAN
POWER MAX10A
DC OUTPUT
POWER
SC2 SC3 LOCKALM CLR SC1 SHIFT
FINE
FINE
REGULA TED DC POWER SUPPLY
OUTPUT
VOLTAGE
CURRENT
CONFIG PWR DSPLMEMORY LOCALSET OVP•OCP
CV
CC
/ W
V
A
ALM RMT LOCK LAN
BCA
PRESET
DLY SEQ HBSSVIR
CV
CC
/ W
V
A
ALM RMT LOCK LAN
SC2 SC3 LOCKALM CLR SC1
SHIFT
FINE
FINE
REGULATED DC POWER SUPPLY
OUTPUT
VOLTAGE
CURRENT
CONFIG PWR DSPLMEMORY LOCALSET OVP•OCP
CV
CC
/ W
V
A
AL M RMT LOCK LAN
BCA
PRESET
DLY SEQ HBSSVIR
CV
CC
/ W
V
A
AL M RMT LOCK LAN
SC2 SC3 LOCKALM CLR SC1 SHIFT
FINE
FINE
REGULA TED DC POWER SUPPLY
OUTPUT
VOLTAGE
CURRENT
CONFIG PWR DSPLMEMORY LOCALSET OVP•OCP
CV
CC
/ W
V
A
AL M RMT LOCK LAN
BCA
PRESET
DLY SEQ HBSSVIR
CV
CC
/ W
V
A
AL M RMT LOCK LAN
SC2 SC3 LOCKALM CLR SC1 SHIFT
FINE
FINE
REGULA TED DC POWER SUPPLY
OUTPUT
VOLTAGE
CURRENT
CONFIG PWR DSPLMEMORY LOCALSET OVP•OCP
MAX10A
DC OUTPUT
POWER
MAX10A
DC OUTPUT
POWER
18
16
17
1
1
1
14
15
19
20
20
20
19
21
21
21
22
22
19
Controls
Controls
Controls
Controls
400W model
800W model
1200W model
PWR
PWR
PWR
7
8
9
6
5
2
3
4
10
11
12
13

PWR-01 9
No
.Name Function
1POWERswitch Press the ( ) side to turn on and the ( ) side to turn off. p.28, p.29
2 Voltmeter Displays the voltage, alarm, or CONFIG parameter number. p.34, p.54
3OUTPUTLED
Lights green when output is turned on. Blinks orange during output-on delay. Blinks
green during output-off delay. p.37
Blinks orange when output is on and a protection function is activated. p.46
Lights green during soft start. Blinks green during soft stop. p.39
4 Ammeter Displays the current, power, or the cause of an alarm, or the value of a CONFIG param-
eter.
p.34, p.46,
p.54
5 OUTPUT key Used to turn output on and off. p.37
6 VIR/ SS/ DLY/ SEQ/ HB
VIR: Lights when the variable internal resistance function is enabled.
SS: Lights when the soft start/ stop function is enabled and blinks when it is in progress.
DLY: Lights when the output-on/ off delay is enabled and blinks when it is in progress.
SEQ: Lights when a sequence is being executed and blinks the PWR-01 is waiting for a
trigger.
HB: Lights when the hyper bleeder of the bleeder circuit is enabled.
p.78
p.39
p.38
p.79
p.76
7 PRESET A/ B/ C LED
A: Lights green when the memory A values are being recalled or saved.
B: Lights green when the memory B values are being recalled or saved.
C: Lights green when the memory C values are being recalled or saved.
p.70
8SET key Used to set and confirm the output voltage and output current (the key has an LED). p.34
ALM CLR key Used to release the activated state (alarm) of protection functions (the key has an LED). p.46
9OVP•OCP key Used to set and display the overcurrent protection (OCP), overvoltage protection (OVP),
undervoltage limit (UVL) trip points (the key has an LED). p.47, p.52
SC1 Used to call the CONFIG parameter shortcut (the key has an LED) p.72
10 CONFIG key Used to configure the various operating conditions (CONFIG) (the key has an LED). p.54
SC2 Used to call the CONFIG parameter shortcut (the key has an LED) p.72
11 VOLTAGE knob Used to set the voltage value or select the value of a CONFIG parameter. p.36, p.54
FINE Used to make fine voltage value adjustments. p.36
12 CV LED Lights green during constant voltage mode. p.45
13 CC LED Lights red during constant current mode. p.45
14 CURRENT knob Used to set the current, change the value of a CONFIG parameter, or set the internal
resistance value.
p.36, p.54,
p.59
FINE Used to make fine current or internal resistance value adjustments. p.36, p.59
15
ALM LED
Lights red when a protection function is activated. However, when the undervoltage limit
(UVL) is activated, the LED does not light. When the power limit (POWER LIMIT) is acti-
vated, the LED blinks.
p.71
RMT LED Lights green when the PWR-01 is being remotely controlled p.73
LOCK LED Lights green when the keys are locked. p.71
LAN LED
Lights and blinks when the LAN interface is running.
• No fault status (green)
• Fault status (red)
• Standby status (orange)
• Identify status (blinking green)
Communica-
tionInterface
Manual
16 LOCAL key Used to switch between local mode and remote mode (the key has an LED) and switch
the CONFIG parameter display. p.73
SHIFT key Used to enable the functions that are written in blue characters below the key. –
17
PWR DSPL key Used to display the output power on the ammeter (the key has an LED). p.34
LOCK key Used to lock the operation of all keys other than the OUTPUT key (key lock) (the key has
an LED). p.71
18
MEMORY key Used to load and save the value of preset memory A, B, or C (the key has an LED). p.70
SC3 Used to call the CONFIG parameter shortcut (the key has an LED). p.72
19 Air inlet (louver) Air inlet for cooling. p.116
20 DC OUTPUT connector Front-panel output terminal. p.27
21 Rubber feet Four locations on the bottom side. p.139
22 Handle Handle for carrying. p.139
See

10 PWR-01
Rear Panel
J1
J2
J2
J1
J2
J1
9
8
10
11
8
8
9
9
400W model
800W model
1200W model
7
456
1
3
2
10
11
10
11

PWR-01 11
No. Name Function
1 DC OUTPUT terminal Rear-panel output terminal. p.24
2Chassis terminal A connector for grounding the output. p.24
3 LAN port1Ethernet port for controlling the PWR-01 remotely.
Communication
Interface Manual
4RS232C/ TRG IN
connector1
RS232C port for controlling the PWR-01 remotely.
Trigger signal input connector. The common terminal is connected to the
chassis.
5 TRG OUT connector1Trigger signal output terminal. The common terminal is connected to the
chassis.
6 USB port1
1. A connector cover or terminal cover is attached when the product is shipped from the factory.
USB port for controlling the PWR-01 remotely.
7Sensing terminal Terminals to connect the sensing cables to. p.30
8Air outlet Air outlet for internal cooling. –
9ACINPUT 400W model/ 800W model: AC inlet.
1200W model: AC INPUT terminal block.
p.14
p.15
10 J1 connector1For external control and master-slave parallel operation. p.85, p.104
11 J2 connector1External control p.85
See

12 PWR-01
This page is intentionally blank.

Installation and Preparation
This chapter describes how to turn on the
PWR-01, what kind of load cables to use,
and how to connect cables to the output
terminals.

14 PWR-01
Connecting the Power Cord
This product conforms to IEC Overvoltage Category II (energy-consuming equipment that is
supplied from a fixed installation).
400W model/ 800W model
1Check that the AC power line meets the nominal input rating of the prod-
uct.
The product can receive a nominal line voltage in the range of 100 Vac to 240 Vac at
50 Hz or 60 Hz.
2Check that the POWER switch is turned off.
3Connect the power cord to the AC inlet on the rear panel.
4Insert the power plug into a grounded outlet.
WARNING
Risk of electric shock.
• This product conforms to IEC Safety Class I (equipment that has a protective con-
ductor terminal). Be sure to earth ground the product to prevent electric shock.
• The product is grounded through the power cord ground wire. Connect the protec-
tive conductor terminal to earth ground.
• Use the included power cord to connect to the AC line.
If the supplied power cord cannot be used because the rated voltage or the plug shape is
incompatible, have a qualified engineer select an appropriate power cord that is 3 m or less
in length.
• The power cord with a plug can be used to disconnect the product from the AC power line
in an emergency. Connect the plug to an easily accessible power outlet so that the plug can
be removed from the outlet at any time. Be sure to provide adequate clearance around the
power outlet.
• Do not use the dedicated power cord with other instruments.

PWR-01 15
Installation and Preparation ｜Connecting the Power Cord
1200W model
A power cord is not included with the 1200W model. Use a power cord that conforms to the
rated AC input voltage and current of this product.
The following dedicated power cord is available as an option.
Switchboard breaker requirements
• Rated current: 30 A (100 V system), 15 A (200 V system)
(for safety reasons, circuit breakers exceeding the specified current cannot be used)
• Only use the breaker with this product.
• Keep the breaker readily accessible at all times.
• Indicate that the circuit breaker is dedicated for use with this product and that it is used
to disconnect the product from the AC power line.
WARNING
Risk of electric shock.
• Before you connect the power cable, turn off the switchboard breaker (a switch that
cuts off the power supply from the switchboard).
Risk of fire.
• Be sure to have a qualified engineer make the connection to the switchboard.
• The switchboard breaker must meet the requirements shown below.
CAUTION
Inside the product, protection circuits are connected to match the polarity of the input termi-
nal. Be sure to connect the L, N, and (GND) terminals correctly between the switchboard
and the product.
AC5.5-3P3M-M4C-VCTF
For the 1200W
model
[85-10-1010]
• We recommend that you use the optional dedicated power cord to connect to the AC power
line. If you will not use the dedicated power cord, use an appropriate power cord with a
length of 3 m or less that has been selected by a qualified technician.
• In an emergency, turn off the switchboard breaker to separate the product from the AC
power line.
PWR1201L
Switchboard
Circuit breaker indication example
PWR1201L dedicated
PWR1201L
dedicated circuit breaker
N
L
N
L

16 PWR-01
Installation and Preparation ｜Connecting the Power Cord
Necessary cable
Vinyl cabtire cable (VCTF): Nominal cross-sectional area 5.5 mm23core
Finished diameter: 12.1 mm or less
Rated voltage: 250 V or higher
Input terminal end: Ring terminal 5.5-4 (5.5 mm2M4)
Connection procedure
1Check that the AC power line meets the nominal input rating of the prod-
uct.
The product can receive a nominal line voltage in the range of 100 Vac to 240 Vac at
50 Hz or 60 Hz.
2Check that the POWER switch is turned off.
3Connect the power cord to the AC INPUT terminal on the rear panel.
Pass the power cord through the included INPUT terminal cover, and fix
the cord in place using the lock plate and screws.
Be sure to connect the L, N, and (GND) of the AC input terminal correctly.
4Attach the INPUT terminal cover using the screws on the PWR-01.
5Attach the included ferrite core to the power cord.
400W model 800W model 1200W model
Protective conductor current
(at 265 Vac, 60 Hz) 1.5 mA 2.5 mA 4.0 mA
Inrush current 25 Amax 50 Amax 75 Amax
Input terminal cover
N L
(GND)
AC INPUT terminal block
N: White or blue
L: Black or brown
Lock plate
Lock plate
(GND): Green or
green and yellow
Secure the insulated section
of the power cord in place
with a lock plate.
Power cord
Screw
Input terminal cover

PWR-01 17
Installation and Preparation ｜Connecting the Power Cord
Attach the core as close to the input terminal as possible but not too close as to get in
the way of attaching and removing the INPUT terminal cover.
Use the cable tie to fix the core on to the power cord. Check that the core is locked
and does not move. Cut the cable tie at an appropriate length.
6Attach a appropriate crimping terminal to the switchboard end of the
power cord.
7Turn off the switchboard’s circuit breaker.
8Connect the L, N, and (GND) wires of the power cord to the matching
terminals on the switchboard.
Insert the cable tie
through here. Firmly apply the cable tie to
attach the core to the power
cord.
Approx. 10 cm
1
2
3

18 PWR-01
Load Considerations
Note that the output will become unstable if the following types of loads are connected.
Loads with peak current or pulse-shaped current
The PWR-01 only indicates mean values. Even when the indicated value is less than or equal
to the set constant current, the peak values may exceed the set constant current. If this hap-
pens, the PWR-01 is instantaneously put into constant-current mode, and the output voltage
drops.
For these types of loads, you must increase the set constant current or increase the current
capacity.
Loads that generate reverse current to the power supply
The PWR-01 cannot absorb reverse current from the load. Therefore, if a regenerative load
(such as an inverter, converter, or transformer) is connected, the output voltage increases
and becomes unstable. This can cause a malfunction.
For these types of loads, connect a resistor (RD) as shown in the following figure to bypass
the reverse current. However, the amount of current to the load decreases by Irp.
Load current with peaks Pulse-shaped load current
Constant current setting
Ammeter reading (mean value)
Constant current setting
Ammeter reading (mean value)
I
O
RD
EO
Equivalent circuit of the PWR-01 Regenerative load
í
0
Reverse current
-IO
+IO
+
Irp
RDLQ
RD
: Reverse current bypass dummy load
EO: Output voltage
Irp: Maximum reverse current
(2LQ9
,USLQ$
Load
Output current
CAUTION
Use a resistor with sufficient rated power for RD. If a resistor with insufficient rated power for
the circuit is used, resistor RDwill burn out.

PWR-01 19
Installation and Preparation ｜Load Considerations
Loads with accumulated energy
Connecting a load with accumulated energy, such as a battery, to the PWR-01 may cause
current to flow from the load to the internal circuit of the PWR-01. This current may damage
the PWR-01 or reduce the life of the load.
For this type of load, connect a reverse-current-prevention diode (DRP) between the PWR-01
and the load in series as shown in the following figure.
This cannot be used in conjunction with remote sensing.
This product
Load with accumulated energy
DRP: Reverse-current-protection diode
D
RP
CAUTION
• To protect the load and the PWR-01, use a DRP that conforms to the following
specifications.
Reverse voltage withstand capacity: At least twice the rated output voltage of the PWR-01.
Forward current capacity: 3 to 10 times the rated output current of the PWR-01.
A diode with small loss.
• Be sure to take into account the heat generated by DRP. DRP will burn out with inadequate
heat dissipation.

20 PWR-01
Selecting the Load Cables
Current capacity of load cables
A cable’s temperature is determined by the resistive loss based on the current, the ambient
temperature, and the cable’s external thermal resistance. The following table shows the cur-
rent capacity of heat-resistant vinyl cables that have a maximum allowable temperature of
60 °C when one of the cables is separated and stretched out horizontally in air in an ambient
temperature of 30 °C. The current must be reduced under certain conditions, such as when
vinyl cables that have a low heat resistance are used, when the ambient temperature is 30 °C
or greater, or when cables are bundled together and little heat is radiated.
Taking measures against noise
When connecting cables that have the same heat resistance, separating the cables as much
as possible to increase heat radiation enables a greater amount of current to flow. However,
wiring the + (positive) and - (negative) output wires of the load cable side by side or bundling
them together is more effective against unwanted noise. The Kikusui-recommended currents
shown in the above table are allowable currents that have been reduced in consideration of
the potential bundling of load cables. Use these values as a guideline when connecting
cables.
WARNING
Risk of fire.
• Use load cables whose capacity is adequate for the PWR-01’s rated output current.
• The output terminal and its surrounding area become very hot. Use cables whose
covers have an allowable temperature of 85 °C or higher.
Risk of electric shock.
• Use load cables with a voltage rating that meets or exceeds the product’s isolation
voltage. For details on the PWR-01’s isolation voltage, see Chap.7 "Specifica-
tions"(p.117).
CAUTION
• Use load cables with a core diameter that is appropriate for the amount of current being
used and with sturdy, flame-resistant insulation.
Nominal cross-
sectional area (mm2)
AWG (reference cross-
sectional area; mm2)
Allowable current1(A)
(Ta = 30 °C)
1 Excerpt from Japanese laws related to electrical equipment.
Kikusui-recom-
mended current (A)
2 14 (2.08) 27 10
3.5 12 (3.31) 37 -
5.5 10 (5.26) 49 20
8 8 (8.37) 61 30
14 6 (13.3) 88 50
22 4 (21.15) 115 80
30 2 (33.62) 139 -
38 1 (42.41) 162 100
50 1/0 (53.49) 190 -
60 2/0 (67.43) 217 -
80 3/0 (85.01) 257 200
100 4/0 (107.2) 298 -