Power Supply

https://global.kikusui.co.jp/

High-Reliability
DC Power Supplies
PAN-A Series
0 V to 600 V DC, 0 A to 50 A, 28 models
Low noise and highly stable output achieved using the series regulation system
Basic DC power supplies, superior for general-purpose use.

PAN-A series

Basic DC Power Supplies Superior
for General Purpose use...

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The PAN-A series is a high-performance, highly reliable DC power supply unit
featuring regulated variable voltage. These units are suitable for use in a rangeof fields including research and development, quality control, and production.
The PAN-A series consists of a pre-regulator using FETs and a series regulator
using power transistors, providing the high-quality input characteristic of thelatter as well as the low power-source harmonic distortion of choke input typephase control.
To achieve the high reliability and safety important for power supply, components of sufficient derating and long-proven mounting techniques are usedthroughout. All models are carefully designed and furnished with over voltage
protection (OVP) and various safety functions.

Low temperature drift
Carefully selected components,
improved circuit design, and heatdissipation based on the forced air
cooling design have achieved a lowtemperature drift of 100 ppm/°C(constant voltage characteristic)and 300 ppm/°C (constant current
characteristic).

Quick transient response
Since the Error Amplifier has acharacteristics of wide frequency
bandwidth, stable gain, less phase shift
and high loop gain, the PAN-A series
is equipped with a highly stable andlow output impedance as well as quick
response to sudden change of theload. (Typical response time is 50 µs)

Application
Incorporates a wide range of functions
capable of systematization, including
analog signal- or computer- (GPIB)
based remote control, remote sensing,and master-slave-control serial andparallel operations.
(The PAN350-3.5A and PAN600-2A
cannot be operated in series.)

Line-up			

175 W type

350 W type

700 W type1000 W type

16 V

PAN 16-10A

PAN 16-18A

PAN 16-30A

PAN 16-50A

35 V

PAN 35-5A

PAN 35-10A

PAN 35-20A

PAN 35-30A

60 V

PAN 60-3A

PAN 60-6A

PAN 60-10A

PAN 60-20A

70 V

PAN 70-2.5A

PAN 70-5A

PAN 70-8A

PAN 70-15A

110 V

PAN 110-1.5A

PAN 110-3A

PAN 110-5A

PAN 110-10A

160 V

PAN 160-1A

PAN 160-2A

PAN 160-3.5A

PAN 160-7A

PAN 250-2.5A

PAN 250-4.5A

250 V			350 V				PAN 350-3.5A

600 V				PAN 600-2A

175 W type

350 W type2

700 W type1000 W type

Description on the Panel
Front Panel
Voltmeter, amperemeter
High-intensity LEDs offering
good visibility are used.
These meters indicate output
voltage and current as well as
output limit values.

Alarm display“ALM” lights up when the
OVP circuit is activated.

Limit switch
If this limit switch is held down,
the voltmeter indicates the voltage
limit value, and the amperemeter
indicates the current limit value.
Preset OVP switch
If this switch is held down,
the voltmeter indicates thepreset OVP value.

Output ON/OFF switch
ON/OFF can also be controlledwith external signals.

OVP variable resistor
This is used to preset theactuating point for OVP.
Power switch
The 175 W and 350 W
models are designed so thatthe rectification circuit is shut
down if the OVP function is
activated. The 700 W and
1000W models, which use acircuit protector (NFB), aredesigned so that the powerswitch is automatically shut
down if the OVP function is
activated.

Voltage and current preset
variable resistors
Shock-resisting 10-turn helicalpotentiometers are used (theoreticalresolution: 0.018 %; a guard cap isused to change to a fixed or semifixed knob). These variable resistors
are of a wire-wound design, andsliding surfaces are treated to preventoxidation.

Front-side output
terminals
Note: There is no auxiliary
output terminal on the front
panel of Model PAN16-50A.

Sub-panel cover
A remote-control presetswitch and variable resistors
for various calibrations(with offset and full-scale
adjustments) are locatedbeneath the cover.

Rear Panel

Control terminals
These terminals are used forremote control, parallel, orseries operations.

Fuse holder(175 W and 1000 W type havethis holder inside of the unit.)

Note: The arrangement of sensing
terminals for the PAN3503.5A and PAN600-2A
differ from other models:Terminal 1 is unassigned.

AC input terminals(175 W and 350 W type haveAC receptacle instead.)
Sensing terminals
These terminals are used for
Output terminals Chassis ground terminal
remote sensing.

Forced air-cooling exhaust port
3

Application
The PAN-A series enables remote controlof output voltage and current using analog signals. External contact points canalso be used to control ON/OFF operations■ Master-slave control of series
operation(This control is possible only for seriesconnected units of the same model.)■ Remote-control using external voltage
Item to be cntrolled Control voltage*

Input impedance

Output voltage

0 to approx. 10V

Approx. 10 kΩ

Output current

0 to approx. 10V

Approx. 25 kΩ* The control voltage circuit should be floated(insulated), since "common" is connected to thepositive voltage side.

■ Remote-control using external resistor
Item to be controlled Control resistor*

Current in resistor

Output voltage

Approx. 10 kΩ

Approx. 1 mA

Output current

Approx. 10 kΩ

Approx. 0.4 mA* For the control resistors, use metal film or wire
wound resistors of 1/2 W or larger capacity, a lowtemperature coefficient, and good aging stability.

■ Master-slave control of parallel
operation(This control is possible only for parallelconnected units of the same model.)● The current capacity can be increased byconnecting a multiple number of unitsof the same model in parallel. Output
control can be performed by a masterunit.
● Use only one master unit to perfor m
remote sensing, remote cont rol, andoutput on/off control.

● The output voltage can be increased byconnecting a multiple number of units ofthe same model in series. The unit on the
top (i.e., the positive side) plays the roleof master, and can control the output of
the slave unit(s).
● The example shown above is a dual tracking power supply that can vary positive
and negative voltages simultaneously.
* The number of slave units to be connected in series is determined bythe rated
output voltage and isolation voltage ofeach unit.Taking the PAN35-10A as an
example for series connection: Since
the rated output voltage is 35 V, and theisolation voltage is ±250 V, 250/35 = 7.1,
i.e., up to 7 units including the master
unitcan be connected in series.
Note: PAN350-3.5A and PAN600-2A do
not offer master-slave control andserial operation functions.
■ Remote sensing* For one master unit, a maximum of twoslave units can be connected in parallel.
● This is a method used to compensate
for the voltage drop caused by the cable
resistance between the power unit and theload and contact resistance. The problem
of voltage drops becomes more serious as
the current becomes larger. By turningon the “Sens” switch at the rear panel
and transferring the voltage sensing point
to the load , a voltage drop of up to 0.6 V
can be prevented on one side.

4

Note: For the sensing f unction in 16 V
models, the maximum output voltage ofthis series is 105% of the rated voltage.
Since the maximum output voltage ofthe 16 V models is 16.8 V, an attempt tocompensate for 1.2 V (0.6 V for one way× 2), the full-compensating voltage, will
disable output of the rated voltage. In thiscase, use wires that have a larger crosssectional area with less voltage drop, sothat voltage drops are 0.4 V or less oneway.
● Connect an electrolytic capacitor witha capa cit y of a seve r al t hou sa nd t oseveral tens of thousand of microfarads
to the load end, paying attention to thepolarity and making the lead wires as
short as possible. The reasoning here is
as follows. A long cable to the load has
nonnegligible inductance, which raises
the output impedance of the power supply
unit to the load. A large capacitanceconnected to the load end can prevent
this. Particularly when dealing with aload like an inverter, which turns thecurrent on and off with high frequency,
connect a capacitor with a capacity larger
than several thousand microfarad using
the shortest possible lead wires.
■ Computer Control● To control the power supply from a PC
via a GPIB interface, connect a PIA4800
se r ie s powe r supply cont rol le r t o a
PAN-A series power supply.
* Combine the PIA4810 power supply
controller and OP01-PIA or OP02-PIA
control board for two-channel analog
control with the PIA4800 series. Since
the PI A4810 cont roller i ncor porates
four control boards, up to eight channelsof DC power supplies or loads can becontrolled.

◄ A combination of the PAN-A

series and a PIA4800 series
power supply controller
allows the extension of asystem power supply.

Protection system
Failures or malfunctions of a power supply
unit may cause an operational shut-down of
the overall system or damages to expensive
loads. Therefore, failure-free operating
performance is extremely important. And
should a failure occur, protection circuits
must be provided that can ensure that noaccident occurs.

■ Overheat protection circuit
This circuit functions to tur n off thepower switch, if the temperature of someof the main components in the equipment
rises higher than a specified value.
A thermal fuse incorporated in the mainor sub-transfor mer fur ther improvessafety performance.

■ Overvoltage protector (OVP)
If an over voltage is generated by anoperating error or accident, the OVP
instantaneously (Operating time: 50 ms
or less ) shuts down the power switch
circuit protector, and protects the connected load. (Type 0 and Type I2 models
employ a gate block system, and shut
down their rectification circuits.) Since
the OVP used in the PAN-A series is of apreset design, the operating voltage canbe preset by pressing the preset knob on
the panel, while looking at the voltmeter.
The operating voltage can be checked
without interrupting the OVP operationeven during aging.

■ Voltage detection circuit
If the smoothing electrolytic capacitor
voltage rises above a specif ied levelowing to an operating error involving
the remote selection switch inside thepanel or to a failure of the rectification
circuit, the voltage detection circuit
functions to instantaneously shut down
the rectification circuit.

■ Reverse connection prevention circuit
This circuit protects the power supply
unit even if a reverse polarity voltage isapplied to the output terminals.
■ Overcurrent detection circuit
Usi ng a compa r ison a mpl if ie r, t h isdetection circuit constantly monitors theoutput current. It prevents a current fromincreasing beyond the rated value in theevent of an over-input caused by remotecontrol, and also prevents overcurrents
caused by misoperation of the remotecontrol selector located inside the panel.

■ Surge absorberThis protect the power supply unit fromsurge currents generated in the powerline by lightning.

5Reference
Load
Since the PAN-A series is designed fora wide range of applications, there are avariety of loads to be connected. Dependingon the type of load, direct connection may
cause problems or malfunctions, and somecountermeasures should be taken.
■ Load with accumulated energy,
such as a battery
When connecting a load with accumulated
energy, such as a battery, to the PAN-A
series output, a large current may f low
from the load to the internal capacitor
through the output control circuit protection diode. This current may burn internal
components or shorten the load's life. In
such a cases, therefore, connect a reverse
cur rent protection diode between the
power supply unit and the load as shown
below.

■ When the load current has peaks or apulse waveformIn the case of a digital or a motor driving
circuit, a load current waveform will
instantaneously reach the rated current
range if the peak value exceeds the rated
value, even if it is within the rated valueon the meter indication (mean value).
If so, the output voltage will drop andappear unstable. The basic remedy is toincrease the output current (i.e., increaset he cu r r e nt pr e set va lue or cu r r e nt
capacity). However, if the pulse widthis nar row or the peak value is low, it
may prove effective to connect a largecapacitor to the load end.

■ Inductive load
● The counter electromotive force generated by turning on and off of the power
supply, or changing the voltage setting isshunted by protection diode D1 inserted
in parallel with the output so that thepower supply is not damaged.
● When pulse noise generated from an
inductive load is impressed at the same6

polarity as the power supply, protect
the power supply by inser ting diodeD2 in series with the power supply andinserting a noise prevention CR absorber
across the switch.

■ When the output is turned On and off
with a mechanical switch● When a DC output of 100 V or more is
opened and closed with a switch, arc
discharge, etc. will cause the switch
contacts to noticeably wear and generate
noise. This noise may enter the power
supply differential amplifier through theload line and cause the output to become
unstable. Take noise countermeasuresby inser ting a CR absorber near thecontacts, the same as for an inductiveload.
● W h e n p e r fo r m i ng r e m ot e s e n si ng ,always turn the sensing line on or off
simultaneously.

Rush Current
When turning on the power, a rush current
may flow, depending on when the power isturned on. Such rush currents are caused
by magnetic saturation of the transformer
core material. Theoretically, if the poweris turned on near the phase angle 90°(π/2)
of the voltage waveform, no rush current
is generated. If the power is turned on ata timing corresponding to the phase angle
0°(zero cross), however, a max. current isgenerated. This transient phenomenon isshown below. In practice, however, thepresence of a rush current is determined by
the hysteresis characteristic of the B-H
curve of the core material, the directionof residual magnetic f lux upon switchoff, and/or the impedance of the AC line
to which the PAN-A series is connected.
If the power is turned on simultaneously
for a multiple number of the PAN-A series
units, check that the AC line capacity or theswitch board capacity is sufficient.

● Typical (max.) rush current value for the
PAN-A series(Half wave width of current waveform:
approx. 5 ms)
Type

175W(0)AC inputpower
voltage350W(I2) 700W(I3) 1000W(II)

100 V

100 V

100 V

100 V

Peak
current

100 A

200 A

350 A

450 A

Negative voltage
With the OUTPUT switch set to OFF, a
negative voltage of approx. 0.6 V is applied
to the output when the current setting knob
is turned completely counterclockwise.
This voltage acts to generate approx. 10
mA of reverse current through the load.
The PAN-A series may be inadequate forapplications in which the load should be
kept free from serious influence by such areverse current.
Output terminals on the front side
The output terminals on the front side areauxiliary output terminals. These terminals
may not satisfy the specification. To satisfy
the specification, use output terminals on
the rear panel. Be sure to use the attachedterminal cover for models with rated output
voltage higher than 55 V.
Output wires
The sectional area, current capacity, andresistance of these wires are as shown
below.
Nominal sectional area

Current estimated for
DC output wire2(mm2)

10(A)

5.5

20

8

30

14

50

Current for allowable conductor
temperature
60°C(Ambient temperature 30°C )Typical resistance at
20°C

27(A)

Approx.9(Ω/km)

49

3

61

2.2

88

1.2

Model Line-up and Specifications
OutputModel

RippleCV
VLine Regulation

Load Regulation

CC

CV

CC

CV

CC

CV

CC

Dimensions

Weight

Type

kg/Ib

Input
Voltage(AC)Power
consumption

V

Approx. kVAAmV rmsmA rms

0.005 %+mV

mA

0.005 %+mV

mA

PAN 16-10A

0 to 10

0.5

2

1

1

1

3

0

11/24.25100

0.4

PAN 16-18A

0 to 18

0.5

5

1

1

1

3

I2

17/37.48100

0.8

PAN 16-30A

0 to 16

PAN 16-50A

0 to 30

0.5

5

1

3

2

3

I3

23/50.71

100

1.1

0 to 50

0.5

10

1

3

2

5

II

36/79.37

100

1.6

PAN 35-5A

0 to 5

0.5

1

1

1

1

2

0

11/24.25

100

0.4

PAN 35-10A

0 to 10

0.5

2

1

1

1

3

I2

17/37.48

100

0.8

0 to 20

0.5

3

1

3

2

3

I3

23/50.71

100

1.4

PAN 35-30A

0 to 30

0.5

5

1

3

1

5

II

36/79.37100

1.8

PAN60-3A

0 to 3

0.5

1

1

1

1

2

0

11/24.25

100

0.35

PAN60-6A

0 to 6

0.5

2

1

1

1

3

I2

17/37.48

100

0.7

0 to 10

0.5

3

1

3

2

3

I3

22/48.5100

1.1

PAN60-20A

0 to 20

0.5

2

1

1

1

2

II

35/77.16100

2.1

PAN70-2.5A

0 to 2.5

0.5

1

1

1

1

1

0

11/24.25

100

0.35

PAN70-5A

0 to 5

0.5

2

1

1

1

2

I2

17/37.48

100

0.8

0 to 8

1

2

1

1

1

3

I3

22/48.5100

1.1

PAN70-15A

0 to 15

1

5

1

1

1

3

II

35/77.16

100

1.9

PAN110-1.5A

0 to 1.5

0.5

1

1

1

1

1

0

11/24.25

100

0.4

PAN110-3A

0 to 3

0.5

1

1

1

1

2

I2

17/37.48

100

0.7

0 to 5

1

1

1

1

1

2

I3

22/48.5100

1.0

PAN110-10A

0 to 10

1

2

1

1

1

3

II

35/77.16

100

2.0

PAN160-1A

0 to 1

1

1

1

1

1

1

0

11/24.25

100

0.33

PAN160-2A

0 to 2

1

1

1

1

1

2

I2

17/37.48

100

0.7

0 to 3.5

1

1

1

1

2

2

I3

22/48.5100

1.0

0 to 7

1

2

1

1

2

2

II

36/79.37100

1.9

0 to 2.5

5

2

2

1

3

1

I3

23/50.71

100

1.1

0 to 4.5

5

2

2

1

3

2

II

35/77.16100

1.8

PAN 35-20A

PAN60-10A

PAN70-8A

PAN110-5A

PAN160-3.5A

0 to 35

0 to 60

0 to 70

0 to 110

0 to 160

PAN160-7A
PAN250-2.5A
PAN250-4.5A

0 to 250

PAN350-3.5A

0 to 350

0 to 3.5

1

2

1

1

1

2

II

36/79.37

100

2.1

PAN600-2A

0 to 600

0 to 21

0.5

0.002 %+1

0.5

0.002 %+11II37/81.57100

2.0

Input voltage: 110 VAC, 120 VAC, 200 VAC, 220 VAC, 230 VAC and 240 VAC input are available at request.

Common specifications
Constant voltage
temperature coefficient	������� 100 p.p.m./°C (standard value)
Constant current
temperature coefficient	������� 300 p.p.m./°C (standard value)
Transient response time	������ 50 µs: Time required for the output voltage toreturn to a value less than 0.05 % of the rated
value + 10 mV, against a fluctuation of 5 % to
100 % of the output current.
Ripple noise	������������������������� Using an AC voltmeter having a range of 5 Hz
to 1 MHz, ±3 dB, indicated in mean value andeffective value measurement is performed witheither a positive or negative output terminal
connected to the ground.
Indication meters
Voltmeter indication error	��� ±(0.5 % rdg + 2 digits) at 23 °C ±5 °C
Voltmeter max. indication digits	�� 199.9 (Note: 19.99 for the PAN16-10A/PAN1618A/PAN16-30A/PAN16-50A models, and1999 for the PAN250-2.5A/PAN250-4.5A/
PAN600-2A)
Amperemeter indication error	�� ±(1 % rdg + 5 digits) at 23 °C ±5 °C
Amperemeter max. indication digits	�� 19.99 (Note: 1.999 for the PAN110-1.5A/
PAN160-1A, and 199.9 for the PAN16-30A/
PAN16-50A/PAN35-20A/PAN35-30A/PAN6020A)
Grounding	���������������������������� Either the positive or negative terminal can begrounded.
Isolation voltage to ground	�� ±250 VDC (However, ±500 VDC for the
PAN110-1.5A/PAN110-3A/PAN110-5A/
PAN110-10A/PAN160-1A/PAN160-2A/
PAN160-3.5A/PAN250-2.5A/PAN250-4.5A.)

Insulation resistance	������������ Across input side and chassis: 		Greater than 30 MΩ at 500 VDC
Across output side and chassis: 		Greater than 20 MΩ at 500 VDC(For PAN350-3.5A and PAN600-2A, this is1000 V DC, 20 MΩ, or higher.)Withstand voltage	���������������� Nothing abnormal should occur at 1500 VAC,
1 min.
Operating temperature	�������� 0 to 40°
Operating humidity	������������� 10 to 90 % RH
Cooling system	�������������������� Forced air cooling using a fan
Constant voltage operation	�� Green LED
Constant current operation	�� Red LED
Protection system	���������������� ● Constant voltage/current automaticcrossover system● Overvoltage protector (OVP)(10 % to 110 % of rated output voltage)● Overcurrent protection circuit(Approx. 110 % of rated output current)● Overvoltage protection circuit(Smoothing electrolytic capacitor for therectification circuit)● Overheat protection circuit (OHP)(Semiconductor cooling heat-sink [100 °C])
● Thermal fuse
(Main- or sub-transformer)● Input/output fuse

7

External View (Rack Mount)
175 W Type (Type 0)
MAX 470 (18.50)
MAX35(1.38)

Rack mount frame
RMF4
177 (6.67)

37.5(1.48)

102 (4.02)

400 (15.75)

MAX 175 (6.89)
140 (5.51)

106 (4.17)

46

5(
18
. 3)
2(
19
. 0)
Blank panel BP4MAX
20 (0.79)

MAX 115(4.53)

48

Blank panel BP2

Output	������ (Rear) Terminal M4(Front) Binding post M6(auxiliary output terminal)
Input	��������� AC inlet
Attached power cable	���� SVT3 × 18AWG, approx. 3m long, with 3P plug
(CE Model) (H05VV-F, 1SQ. mm, approx. 2m long)*

Bracket B42• Caution for mounting
When mounting on the rack, note that the power supply unit has an air intake for forced cooling.
It is necessary to accompany a blank panel of width of one panel or larger with the unit.

350 W Type/700 W Type (Type I 2 /I 3)
MAX 235 (9.25)

MAX
45(1.77)

210 (8.27)

Rack mount frame
RMF4

350 W Type: 350 (13.78)
700 W Type: 400 (15.75)
177 (6.67)
37.5(1.48) 102 (4.02)

140 (5.51)
MAX 160 (6.30)

MAX
10 (0.39)

350 W Type: MAX 425 (16.73)
700 W Type: MAX 505 (19.88)

Output	������ (Rear) Terminal M4(Front) Binding post M8(auxiliary output terminal)
Input	��������� 350 W Type:AC inlet
700 W Type:Terminal M4
Attached power cable	���� 350 W Type:SVT3 × 18AWG, approx. 3 m long, with 3P plug
(CE Model) (H05VV-F, 1SQ. mm, approx. 2m long)*
700 W Type: Nominal sectional area 2.0 SQ. mm, cabtyre cable, with
3P plug, approx. 3 m long(For PAN35-20A: Norminal
sectional area 3.5 SQ. mm,cabtyre cable, approx. 3 m long)(CE Model) (H05VV-F, 1SQ. mm, approx. 2.5m long, PAN35-20A:
H05VV-F, 2SQ. mm, approx. 3m long)*

46
48

Blank panel BP2

5(
18
. 3)
2(
19
. 0)

Bracket B22• Caution for mounting
When mounting on the rack, note that the power supply unit has an air intake for forced cooling.
It is necessary to accompany a blank panel of width of one panel or larger with the unit.

MAX B
MAX A
160 (6.30)
MAX 175 (6.89)

MAX 430 (16.93)

400 (15.75)

Model

MAX A

MAX B

PAN16-50A

40 (1.57)

500 (19.69)

45 (1.77)505 (19.88)

PAN35-30A
PAN60-20A
PAN70-15A
PAN110-10A
PAN160-7A
PAN250-4.5A
PAN350-3.5A

46

PAN600-2A

Output	������ (Rear) Terminal M4 (M5 for PAN16-50A)(Front) Binding post M8(auxiliary output terminal)
Input	��������� Terminal M4
Attached power cable	���� Nominal sectional area 3.5 SQ. mm, cabtyre cable, without plug, approx. 3m long)(CE Model) (H05VV-F, 2SQ. mm, approx. 3m long)*
Note:There is no auxiliary output terminal, on the front panel of Model PAN16-50A.

160 (6.30)
21.5(0.85) 102 (4.02)

1000 W Type (Type II)

48

2(
18
. 2)
2(
19
. 0)

Bracket BH4• Caution for mounting
When mounting on the rack, note that the power supply unit has an air intake for forced cooling.
It is necessary to accompany a blank panel of width of one panel or larger with the unit.
*The CE marking products are only available for inline voltage of AC 230 V only.

●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/

Printed in Japan

■ All products contained in this catalogue are equipment and devices that are premised on use under thesupervision of 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. ■ Productnames 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 ortrade mark. ■ Colors, textures and so forth of photographs shown in this catalogue may differ from actual products
due to a limited fidelity 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
find 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 orconcluding a purchasing agreement.

Issue:Nov.2022

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