Kikusui PAD-L III Series Operation Manual
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Kikusui PAD-L III Series Operation Manual

Kikusui PAD-L III Series Operation Manual

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REGULATED DC POWER SUPPLY
PAD-L SERIES
PAD-L SERIES
OPERATION MANUAL
PAD-L SERIES TYPE III
PAD16-100L
PAD35-50L
PAD35-60L
PAD60-35L
PAD110-20L
PAD250-8L
PAD-L SERIES TYPE IV
PAD35-100L
PAD60-60L
PAD110-30L
PAD250-15L
PAD-L SERIES TYPE V
PAD35-200L
PAD60-120L
PAD110-60L
Part No. Z1-002-302, IB002642
Jun.2003

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Summary of Contents for Kikusui PAD-L III Series

  • Page 1 REGULATED DC POWER SUPPLY PAD-L SERIES PAD-L SERIES OPERATION MANUAL PAD-L SERIES TYPE III PAD16-100L PAD35-50L PAD35-60L PAD60-35L PAD110-20L PAD250-8L PAD-L SERIES TYPE IV PAD35-100L PAD60-60L PAD110-30L PAD250-15L PAD-L SERIES TYPE V PAD35-200L PAD60-120L PAD110-60L Part No. Z1-002-302, IB002642 Jun.2003...
  • Page 2 If you find any incorrectly arranged or missing pages in this manual, they will be replaced. If the manual it gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/ agent, and provide the "Kikusui Part No."...

  • Page 3: Power Requirements Of This Product

    Blue (NEUTRAL ) White (NEUTRAL) Black (LIVE) Brown (LIVE) Green/Yellow (GND) Green or Green/Yellow (GND) Plugs for USA Plugs for Europe Provided by Kikusui distributor/agent Kikusui distributor/agent can provide you with suitable AC power cord. For further information, contact Kikusui distributor/agent. PAD-L...
  • Page 4 PAD-L...

  • Page 5: Safety Symbols

    Safety Symbols For the safe use and safe maintenance of this product, the following symbols are used throughout this manual and on the product. Understand the meanings of the symbols and observe the instructions they indicate (the choice of symbols used depends on the products). Indicates that a high voltage (over 1,000 V) is used here.

  • Page 6: Safety Precautions

    Safety Precautions The following safety precautions must be observed to avoid fire hazard, electrical shock, accidents, and other failures. Keep them in mind and make sure that all of them are observed properly. Users • This product must be used only by qualified personnel who understand the contents of this operation manual.
  • Page 7 • To maintain performance and safe operation of the product, it is recom- mended that periodic maintenance, checking, cleaning, and calibration be performed. Service • Internal service is to be done by Kikusui service engineers. If the product must be adjusted or repaired, contact Kikusui distributor/agent. PAD-L Safety Precautions...
  • Page 8 Arrangement of this manual This Operation Manual is made up of the following sections. Preface Provides a brief description of the product and specifies its features. Chapter 1 Setup Explains the preliminary procedure for using the PAD-L series, starting with unpacking.

  • Page 9: Table Of Contents

    Contents Power Requirements of this Product _____________________________ I Safety Symbols __________________________________________ III Safety Precautions _______________________________________ IV Preface _______________________________________________ P-1 About this manual Outline of the PAD-L series P-2 Options Chapter 1 Setup ___________________________________________ 1-1 Checking at unpacking 1-2 Installation 1-3 Precautions for moving1-6 Changing the input power voltage (TYPE III models only) 1-7 Connecting the AC power cord...
  • Page 10 Chapter 4 Applied Operation _________________________________ 4-1 Remote sensing 4-2 CV mode by remote control 4-4 4.2.1 Output voltage control (I) with external resistor 4-4 4.2.2 Output voltage control (II) with external resistor 4.2.3 Output voltage control with external voltage Output ON/OFF control 4-12 4.3.1 Output ON/OFF control (I) 4-12...

  • Page 11: Preface

    Preface About this manual The PAD-L series is classified depending on output capacity. This Operation Manual describes the PAD-L series, including the specific types named below. PAD-L SERIES TYPE III PAD16-100L, PAD35-50L, PAD35-60L, PAD60-35L, PAD110-20L, PAD250-8L PAD-L SERIES TYPE IV PAD35-100L, PAD60-60L, PAD110-30L,...

  • Page 12: Outline Of The Pad-L Series

    ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ For details, contact Kikusui distributor/agent. Preface PAD-L...
  • Page 13 Options for incorporation into a rack for TYPE III models Table P-1 Brackets and blank panels for TYPE III models Inch rack Millimeter rack Remarks EIA standard JIS standard Bracket BH6A BH6AM Blank panel BP191 BP1H One-unit width, plate type BP191-M BP1H-M One-unit width, mesh type...
  • Page 14 Options for incorporation into a rack for TYPE IV models Table P-2 Brackets and blank panels for TYPE IV models Inch rack Millimeter rack Remarks EIA standard JIS standard Bracket BH12 BH12M Blank panel BP191 BP1H One-unit width, plate type BP2H Two-unit width, plate type BP191-M...
  • Page 15 Blank panel width required (*1) One-unit Blank panel width min. BP191(-M) BP1H(-M) Two-unit width min. Blank panel BP191(-M) x2 One-unit BP1H(-M) x2 width min. BP2H(-M) (*2) Two-unit Blank panel width min. BP191(-M) x2 BP1H(-M) x2 BP2H(-M) (*2) One PAD-L unit Two PAD-L units incorporated in a rack incorporated in a rack...
  • Page 16 Preface PAD-L...

  • Page 17: Chapter 1 Setup

    Chapter 1 Setup Describes the necessary procedure from unpacking to preparation before use. PAD-L Setup...

  • Page 18: Checking At Unpacking

    Checking at unpacking Upon receiving this product, make sure the package contains the necessary accessories and has not been during transportation. Accessories are shown in Table 1-1. If any part is damaged or missing, contact Kikusui distributor/agent. Table 1-1 Accessories Type III...

  • Page 19: Installation

    Modification may allow the unit to cope with such an atmosphere. If the unit is to be used in such an atmosphere, contact your Kikusui distributor/agent. Do not locate the power supply in a dusty environment. Dirt and dust in the power supply may cause electrical shock or fire.
  • Page 20 Precautions for installation (continued) Do not place any object on the power supply. Particularly a heavy one, as doing so could result in a malfunction. Do not place the power supply on a tilted surface or in a location subject to vibrations. If placed on a non-level surface or in a location subject to vibration, the power supply may fall, resulting in damage and injury.
  • Page 21 Locking the TYPE V models The front and rear sides of the bottom of the power supply are provided with one stopper bolt each. To lock the unit, adjust the stopper bolts so that they just touch the floor of an installation site. The caster on the front panel side is also provided with a locking mechanism.

  • Page 22: Precautions For Moving1-6

    Precautions for moving When moving or transporting the power supply to an installation site, observe the following precautions. Turn the POWER switch off. Moving the power supply with the power on may result in electrical shock or damage. Remove all wirings connected. Moving the power supply with cables connected may break the cables or cause the power supply to fall, resulting in injury.

  • Page 23: Changing The Input Power Voltage (Type Iii Models Only)

    100 V by modifying the connections of the input terminals of the main power transformer. You can contact your Kikusui distributor/agent to change the input power voltage. To perform this work yourself, follow the procedure given below. WARNING •...
  • Page 24 Input power voltage changing procedure (continued) Change the connections of the input terminals of the main power transformer shown in Fig. 1-3 to the condition shown in Fig. 1-4. The transformer's input terminals are either A or B, depending on the model. Input fuse Input terminals Main power transformer...
  • Page 25 WARNING • For connections involving the input terminals of the main power transformer, only change those of the AWG10 wiring. Do not modify the AWG26 wiring, CR snubber, or varistor mounting. Modifying the AWG26 wiring connection will destroy internal circuits such as the sub-transformer. Replace the input fuse with a fuse meeting the input power voltage.

  • Page 26: Connecting The Ac Power Cord

    100 V. Instead, use a 3-core cabtyre cable with a nominal sectional area of 8 mm or greater. If you cannot obtain such a cable, contact Kikusui distributor/agent. 3-core cabtyre cable (8 mm , approximately 4 m) (85-10-0441)
  • Page 27 AC input terminal board Size of terminal screws For TYPE III models: M5 For TYPE IV models: M5 For TYPE V models: M8 For PAD110-60L only: M6 (GND): Green or Green/Yellw L: Black or Brown N: White or blue Fig. 1-6 Connection of AC input terminal board Attach crimp terminals to the wires of the AC power cord.

  • Page 28: Grounding

    Grounding WARNING • Not grounding the power supply creates danger of electric shock. • Connect the ground terminal to an electrical ground (safety ground). CAUTION • Not performing adequate grounding work on the power supply results in malfunction or the production of large noises from the power supply.

  • Page 29: Chapter 2 Precautions And Preparations For Use

    Chapter 2 Precautions and Preparations for Use This chapter contains essential descriptions that must be understood by the user. This chapter must be read thoroughly before operation is begun. PAD-L Precautions and Preparations for Use...

  • Page 30: Inrush Current

    Inrush current A inrush current may flow when the POWER switch is turned on. See Table 2-1. If you are planning to use several sets of the unit in a system, and to turn on the POWER switches at the same time, check that the AC power source or the switchboard is of sufficient capacity.

  • Page 31: Load

    Load Note that the output may become unstable when one of the following loads is connected. 2.3.1 When load current has peaks or is pulse-shaped The current meter on the power supply indicates only mean values. Even when the indicated value is less than the preset current value, therefore, a peak may exceed the preset current value.

  • Page 32: When A Load Generates A Reverse Current To The Power Supply

    2.3.2 When a load generates a reverse current to the power supply The PAD-L series is unable to absorb a reverse current from a load. Therefore, if a power-regenerative load, such as an inverter, converter, or transformer that tends to regenerate power to the power supply, is connected, the output voltage may increase, resulting in unstable output.

  • Page 33: In Case Of Load With Accumulated Energy, Such As Batteries

    2.3.3 In case of load with accumulated energy, such as batteries When a load, such as a battery, that contains accumulated energy, is connected, the load can send a large current to the capacitor inside the power supply via the protective diode on the output control circuit inside the power supply.

  • Page 34: Constant-Voltage And Constant-Current Power Supplies

    Constant-voltage and constant-current power supplies The PAD-L series is capable of both constant voltage and constant current operation. The following describes these operation. The ideal constant-voltage power supply has zero output impedance at all frequencies and maintains a definite constant output voltage with respect to variations in load current.
  • Page 35 operation, allowing you to increase the output voltage further. If the current limit is increased from 5 A to 9 A in Fig. 2-7, a voltage of up to 90 V can be output. Next, let's assume a case in which a load resistance of 4 Ω is used. The output current limit is regarded as the rated maximum output current.

  • Page 36: Protective Circuits

    Protective circuits When selecting a regulated power supply, pay attention to important selection standards that differ slightly from those for general instruments that handle electric signals, in addition to the performance required of the power supply. Since a regulated power supply handles power, an accident caused by equipment failure or inadvertent operation will halt the entire system, and damage the power supplies and load.

  • Page 37: Grounding The Output Terminal

    Grounding the output terminal The output terminals of this unit are isolated from ground. When the GND line of the input power cord is connected to the ground terminal on the switchboard, the unit's chassis assumes a grounding potential, as shown in Fig. 2-8. Cables and loads connected to the output terminals (including the sensing terminal) must be isolated from the chassis with at least the isolation voltage of the unit (*1, also see Table 2-2).
  • Page 38 Grounding the output terminal (continued) The procedure for grounding the output terminal is illustrated below. Fig. 2-9 illustrates a connection of the - (neg.) output terminal to the GND (chassis ground) terminal. In this case, the - (neg.) output terminal is at grounding potential. For this reason, cables and loads connected to output terminals (including the sensing terminal) need to be isolated from the chassis with at least the maximum unit output voltage.
  • Page 39 In conclusion, if there is no need to float the output terminals, ensure safety by connecting either of the output terminals to the chassis ground terminal. Otherwise, outputs may suffer larger ripples. The PAD-L series's specifications are based on the assumption that the - (neg.) terminal is connected to the chassis ground terminal.
  • Page 40 2-12 Precautions and Preparations for Use PAD-L...

  • Page 41: Chapter 3 Basic Operation

    Chapter 3 Basic Operation This chapter explains the basic operations of the front panel. PAD-L Basic Operation...

  • Page 42: Turning On The Power

    Turning on the power In this section, the POWER switch is turned ON without a load to check the unit operating conditions. CAUTION • Actual power is output during this procedure; do not attach a load to the output terminals. •...
  • Page 43 15. Turn the VOLTAGE setting knob fully counterclockwise. 16. Turn the CURRENT setting knob fully clockwise. 17. Turn off the POWER switch. This concludes the operating conditions inspection. Shorting bar – In this Operation Manual, the SAMPLING (red and white), +S, and -S terminals are referred to as sensing terminals.

  • Page 44: Basic Operation

    Basic operation There are two different modes for the unit: constant voltage (CV) mode, and the constant current (CC) mode. Before starting to use the unit, determine which mode is to be employed, and select the procedure suitable for the selected operation mode. CAUTION •...
  • Page 45 Use the VOLTAGE setting knob to set a value for overvoltage to protect the unit. Slowly turn the O.V.P variable resistor counterclockwise and stop it when the POWER switch turns off. Turn the VOLTAGE setting knob counterclockwise to lower the output set voltage.

  • Page 46: Using As A Constant Voltage Power Supply

    3.2.2 Using as a constant voltage power supply CAUTION • A current limit value and required voltage value must be preset to use the unit as a constant voltage power supply. To preset these values, an actual voltage must be output; disconnect any load that may be connected.

  • Page 47: Using As A Constant Current Power Supply

    3.2.3 Using as a constant current power supply CAUTION • A voltage limit value and required current value must be preset to use the unit as a constant current power supply. To preset these values, an actual voltage must be output; disconnect any load that may be connected.

  • Page 48: Connecting Load

    For measures against noise in the load cables, installing the + (pos.) and - (neg.) output lines side by side or bundling them together is more effective against unnecessary noise. The Kikusui-recommended currents shown in Table 3-1 are allowable current values that have been reduced in consideration of potential bundling of load cables.
  • Page 49 Table 3-1 Nominal Cross-sectional Areas of Cables and Allowable Currents (Reference Allowable Current Nominal cross- cross-sectional current (*) recommended sectional area area) by Kikusui (Ta = 30℃) (2.08) (3.31) (5.26) (8.37) (13.3) (21.15) (33.62) (42.41) (53.49) (67.43) (85.01) (107.2) *: Excerpts from Japanese laws related electrical equipment Withstand voltage of load cables For load cables, use cable with a higher voltage rating than the isolation voltage of the unit.

  • Page 50: Connection To The Output Terminals

    3.3.2 Connection to the output terminals WARNING • To avoid electric shock, turn off the POWER switch when connecting the load. • After connecting the load cable, mount the output terminal cover. CAUTION • To assure a good connection of the load cable to the output terminals, use crimped terminals.

  • Page 51: Using The Guard Cap(S)

    Using the guard cap(s) The unit includes VOLTAGE and CURRENT setting knobs; in order to make them mechanically fixed or semi-fixed, guard caps are supplied with the unit. Use them if output presetting is seldom necessary. ○ ○ ○ ○ ○...
  • Page 52 Accompanying hexagon wrench To fix Guard cap Knob Pierce this surface with a phillips-head screwdriver. To semi-fix Guard cap Work on a firm stand. Fig. 3-4 Mounting the guard cap 3-12 Basic Operation PAD-L...

  • Page 53: Chapter 4 Applied Operation

    Chapter 4 Applied Operation Use of the control terminal board on the rear panel allows the unit to perform remote sensing, external output control, parallel operation, and series operation. PAD-L Applied Operation...

  • Page 54: Remote Sensing

    Remote sensing The remote sensing function is intended to reduce the influence of voltage drops affected by the load cable resistance, to keep the output voltage stable at the load terminal. The PAD-L series' remote sensing function is capable of compensating for up to approximately 1.2 V for a single line.
  • Page 55 Connect an electrolytic capacitor (C) with a capacity of approx. 100 to 100,000 µ F across the load terminals. CAUTION • Use a capacitor (C) whose withstand voltage is 120% or more of the unit's rated voltage. ○ ○ ○ ○...

  • Page 56: Cv Mode By Remote Control

    CV mode by remote control 4.2.1 Output voltage control (I) with external resistor • This method is capable of generating output voltage proportional to the resistance of an external resistor. • The resolution of the output voltage is determined by an external resistor; any desired resolution is obtained.
  • Page 57 Recheck that the connections. WARNING • After connections are complete, install the terminal cover. Turn on the POWER switch. Adjust the V. variable resistor on the front panel so that the output voltage becomes 0 V when R1 is zero. Remove the shorting bar Control terminals Output terminals...

  • Page 58: Output Voltage Control (Ii) With External Resistor

    4.2.2 Output voltage control (II) with external resistor • This voltage control is a fail-safe system in which no overshoot occurs when switching a resistance value. • The output voltage Eo and resistance value R2 are inversely proportional, as shown in Fig. 4-4. If the circuit opens when switching the resistor or due to an accident, the resistance value become ∞...
  • Page 59 Connecting procedure Turn off the POWER switch. As shown in Fig. 4-5, remove the shorting bar across the control terminals 5 and 6. Connect an external resistor (R2) across the control terminals 5 and 6 as shown in Fig. 4-5. WARNING •...
  • Page 60 Output voltage control (II) with external resistor (continued) Remove the shorting bar Control terminals Output terminals – –S +S Output voltage Eo ≈ x Eref [V] 2-core shielded wire a + R2 or twisted-pair wire 0 ≤ R2 ≤ ∞ (infinitive) a, b: Constant (depend on model) Eref: Reference voltage 0-10 V...

  • Page 61: Output Voltage Control With External Voltage

    4.2.3 Output voltage control with external voltage This method is used to control output voltage using 0- approx. 10 V. ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 62 Output voltage control with external voltage (continued) NOTE • For Ei, use a voltage source of low noise and good stability. Noise in Ei is multiplied by the amplification degree of the unit and appears in the unit's output. Thus, output ripple noise may not meet the unit's specifications. ○...
  • Page 63 When you wish to connect the shield to Ei CAUTION • When connecting the shield to the Ei side, do not connect the shield to the + (pos.) output terminal of the unit. When using a shielded wire, some external voltage sources may require that the shield be connected to the external voltage source (Ei).

  • Page 64: Output On/Off Control

    Output ON/OFF control 4.3.1 Output ON/OFF control (I) This method is used to control ON/OFF for the output using external contact. When the external contact is closed, the output drops to nearly 0 V. ○ ○ ○ ○ ○ ○ ○...
  • Page 65 • The release voltage across the control terminals 1 and 2 is approx. 5 V, and the short circuit current is approx. 1.5 mA. • Use external contact points of contact rated 10 VDC min. and 100 mA min. • For long-distance wiring, use a small relay and extend the coil side of that relay.

  • Page 66: Output On/Off Control (Ii)

    4.3.2 Output ON/OFF control (II) This method is used to control ON/OFF for the output using an external contact and is capable of accurately securing the output to 0 V when the external contact is closed. ○ ○ ○ ○ ○...
  • Page 67 Recheck that the connections. WARNING • After connections are complete, install the terminal cover. Turn on the POWER switch. Turn on the external contact (S). Adjust the V. variable resistor on the front panel so that the output voltage is 0 V. Control terminals Output terminals –...

  • Page 68: Cc Mode By Remote Control

    CC mode by remote control 4.4.1 Output current control with external resistor Connecting and setting procedure Turn off the POWER switch. As shown in Fig. 4-11, remove the shorting bar across the control terminals 0 and 1. Connect an external resistor (R3) across the control terminals 1 and 2 as shown in Fig.
  • Page 69 Turn on the POWER switch. Adjust the I. variable resistor on the front panel so that the output current becomes 0 A when R3 is zero. Remove the shorting bar Control terminals Output terminals – –S Imax · R3 Output current Io ≈ 2-core shielded wire or twisted-pair wire R3 ≤...

  • Page 70: Output Current Control With External Voltage

    4.4.2 Output current control with external voltage WARNING • To do this, open the unit cover and change a switch on the internal printed board. These control settings must be performed by qualified personnel having sufficient expertise and familiarity with the procedure. ○...
  • Page 71 Connect an external voltage source (Ei) and capacitor (C) between terminals 1 and 2 of the control terminal board, as shown in Fig. 4-13. WARNING • Isolate the external voltage source (Ei) and the cable connected to it with at least the isolation voltage of the unit. Float Ei outputs instead of grounding them (floating).
  • Page 72 Output current control with external voltage (continued) Table 4-3 Constant (depend on model) Type III 16-100L 35-50L 35-60L 60-35L 110-20L 250-8L R [Ω] 0.003 0.01 0.0083 0.033 0.05 Eimax [V] 0.33 0.55 0.55 1.27 0.88 Type IV 35-100L 60-60L 110-30L 250-15L R [Ω] 0.0055...
  • Page 73 When you wish to connect the shield to Ei CAUTION • When connecting the shield to the Ei side, do not connect the shield to the + (pos.) output terminal of the unit. When using a shielded wire, some external voltage sources may require that the shield be connected to the external voltage source (Ei).

  • Page 74: Master-Slave-Control Parallel Operation

    Connecting power supplies of different rated outputs in parallel may cause malfunction. • The number of slave units to be connected to the master unit is up to 2. To connect three or more slaves, contact Kikusui distributor/ agent. Presetting of OVP trip points in parallel operation There is a link between the master unit and slave units on OVP operation in parallel operation.
  • Page 75 Connecting and setting procedure for parallel operation Determine the master unit. Check that no load is connected between the output terminals of the master and slave units. Set the OVP (overvoltage protection) trip points for the master and slave units. Set the OVP trip points for the slave units to a value slightly higher than that used for the master unit.
  • Page 76 Connecting and setting procedure for parallel operation (continued) Connect an electrolytic capacitor (C) with a capacity of 100 to 100,000 µF to the load terminals as necessary. If the length of wiring to a load extends to 3 m or more, the phase shift caused by the inductance and capacitance of the wiring becomes non-negligible, thereby causing oscillation.
  • Page 77 Starting master-slave-control parallel operation CAUTION • To start master-slave-control parallel operation, always follow the procedure below. If the POWER switch of the master unit is turned ON before those of the slave units, the master also outputs a portion of the current output through the slaves, disabling constant voltage operations.

  • Page 78: Master-Slave-Control Series Operation

    Master-slave-control series operation It is possible to increase the output voltage by connecting several slave units in series to one master unit. In a master-slave-control series operation system, a preset output for all the units connected in series can be designated only from the master unit. WARNING •...
  • Page 79 Connecting and setting procedure for series operation Determine the master unit. When the same TYPE models of the PAD-L series with different output capacities are connected, the output is limited by the power supply with the smallest rated output current. Thus, that unit should be used as the master unit. Check that no load is connected between the output terminals of the master and slave units.
  • Page 80 Connecting and setting procedure for series operation (continued) Recheck that the connections. WARNING • After connections are complete, install the terminal cover. Master –S +S unit Slave –S +S unit 1 Slave –S +S unit 2 Control terminals Sensing terminals Remove shorting bars Determining the external resistor R1 ≈...
  • Page 81 Table 4-4 Constant (depend on model) Type III 16-100L 35-50L 35-60L 60-35L 110-20L 250-8L Type IV 35-100L 60-60L 110-30L 250-15L Type V 35-200L 60-120L 110-60L a [kΩ] b [kΩ] Starting master-slave-control series operation CAUTION • To start master-slave-control series operation, always follow the procedure below.

  • Page 82: Shutting Off The Power Switch

    Shutting off the POWER switch If terminals 7 and 8 of the control terminal board are short-circuited, the POWER switch is shut off instantly. WARNING • Avoid touching terminals 7 and 8 of the control terminal board immediately after shutting off power. Terminals 7 and 8 have the same potential as the + terminal of the unit rectifier smoothing capacitor.
  • Page 83 Recheck that the connections. WARNING • After connections are complete, install the terminal cover. Control terminals Output terminals – –S +S Twisted-pair wire For long-distance wiring Relay Extend this line. Fig. 4-18 Connection for shutting off the POWER switch PAD-L Applied Operation 4-31...

  • Page 84: Constant Current Charge Of A Battery/Capacitor

    • Be careful to avoid overcharging loads that can be damaged by overcharging, such as batteries. For loads for which constant voltage charging presents problems, Kikusui's power supply controller allows monitoring of constant voltage and constant current modes. Contact Kikusui distributor/ agent.
  • Page 85 Connect a battery or capacitor across the output terminals as shown in Fig. 4-19. WARNING • Connect the unit and battery to the same polarity. In addition to damaging the unit, connecting them to opposite polarities may result in battery failure. CAUTION •...
  • Page 86 4-34 Applied Operation PAD-L...

  • Page 87: Chapter 5 Names And Functions Of Controls

    Chapter 5 Names and Functions of Controls Provides an outline of the switches and terminals on the panels, including their names and functions. PAD-L Names and Functions of Controls...

  • Page 88: Front Panel5-2

    Front panel 12 13 Fig. 5-1 PAD-L series TYPE III models front panel 12 13 14 15 Fig. 5-2 PAD-L series TYPE IV models front panel Names and Functions of Controls PAD-L...
  • Page 89 12 13 Fig. 5-3 PAD-L series TYPE V models front panel PAD-L Names and Functions of Controls...
  • Page 90 Front panel (continued) 1 POWER switch Turns the power of the unit on and off. Flip up the lever to turn the power ON, and flip it down to turn the power OFF. ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 91 10 VOLTAGE setting knob This is used to set output voltage for constant voltage operation mode. (10 turns) 11 C.V lamp This is displayed when the unit is in its constant voltage operation mode. 12 A. variable resistor This is used to adjust the ammeter. For information on performing adjustments, see 6.3.4 "Adjustment procedure".

  • Page 92: Rear Panel

    Rear panel Fig. 5-4 PAD-L series TYPE III models rear panel Fig. 5-5 PAD-L series TYPE IV models rear panel (except PAD250-15L) Names and Functions of Controls PAD-L...
  • Page 93 Fig. 5-6 PAD-L series PAD250-15L rear panel PAD-L Names and Functions of Controls...
  • Page 94 Rear panel (continued) Fig. 5-7 PAD-L series TYPE V models rear panel (except PAD110-60L) Names and Functions of Controls PAD-L...
  • Page 95 Fig. 5-8 PAD-L series PAD110-60L rear panel PAD-L Names and Functions of Controls...
  • Page 96 Rear panel (continued) 21 Exhaust ports This port uses a fan to exhaust heated air from inside. Keep sufficient space around the unit for good ventilation. 22 Control terminal board This is the terminal board used for applied operations such as remote control. In general, connect terminals 0 and 1, terminals 3 and 4, and terminals 5 and 6 using the shorting bars.
  • Page 97 25 GND (Chassis ground) terminal This terminal is connected to the unit chassis. In general, it should be connected to the + (pos.) or - (neg.) terminal using a shorting bar. For chassis ground terminal, see 2.6 "Grounding the output terminal". 26 AC input terminal board Provides AC power input terminals.
  • Page 98 5-12 Names and Functions of Controls PAD-L...

  • Page 99: Chapter 6 Maintenance

    Chapter 6 Maintenance To maintain the unit's original performance as long as possible, conduct periodic checks and maintenance. PAD-L Maintenance...

  • Page 100: Cleaning

    • Do not use volatile solvents such as thinner and benzine. They may discolor the unit surface coating, erase printed characters, or make face of indicator opaque. Inspection To purchase accessories, contact Kikusui distributor/agent. AC power cord Check that there is no damage on the insulation coating. WARNING •...

  • Page 101: Adjustment

    Before shipment, the PAD-L series is thoroughly adjusted. After a extended periods of use, however, the power supply will require regular adjustment. To have adjustment performed, you may contact Kikusui distributor/agent. If you wish to adjust the power supply on your own, follow the steps below.

  • Page 102: Removing The Cover

    6.3.3 Removing the cover WARNING • For maintenance work, always turn off the POWER switch and the switch on the switchboard. • Never attempt to touch the inside of the unit immediately after shutting off power. Immediately after power is shut off, a large- capacity capacitor in the rectifier circuit retains energy levels hazardous to the human body.
  • Page 103 Removing the cover from the TYPE IV model Remove the top cover, then the side cover on the right side of the unit (viewed from the front). See Fig. 6-2. Black binding screws M3-6L 8 pieces Hexagon socket head bolt M6-14L 6 pieces Fig.

  • Page 104: Adjustment Procedure

    200 should not be adjusted by the user. Do not disturb the settings of these variable resistors. If you inadvertently disturb the settings of any variable resistor other than those that are user-adjustable, it must be readjusted. Contact Kikusui distributor/agent. ○...
  • Page 105 Mechanical zero of the voltmeter Check that the POWER switch is OFF. Mechanical zero adjustment is carried out with the POWER switch turned OFF. Set the voltmeter pointer to "0" using the voltmeter zero-adjustment. The voltmeter zero-adjustment is located below the voltmeter for TYPE III and IV models and in the voltmeter for TYPE V models.
  • Page 106 Voltage system adjustment procedure (continued) Full scale of the voltmeter 14. Set the output voltage so that the DVM displays the rated output voltage of the unit. 15. Adjust the V. variable resistor on the front panel so that the indication of the unit's voltmeter matches the DVM reading.
  • Page 107 Never touch this variable resistor. PCB A-200 RV9 (Voltage limit ADJ) RV20 (Maximum variable constant-voltage range ADJ) Fig. 6-6 RV9 and RV20 in the TYPE IV model PCB A-200 Never touch this RV9 (Voltage limit ADJ) variable resistor. RV20 (Maximum variable constant-voltage range ADJ) Fig.
  • Page 108 Current system adjustment procedure The current system adjustment includes the following five related items. Adjust them as follows: • Mechanical zero of the ammeter • Output current offset • Maximum variable range of constant current • Full scale of ammeter •...
  • Page 109 Warm-up CAUTION • Perform the warm-up with the cover in place. Applying power to the unit for extended periods with the cover removed weakens the cooling effect, potentially causing a failure. Turn on the POWER switch. Set the output current to the rated output current. Warm up the unit, including the DVM, for an adequate period.
  • Page 110 Current system adjustment procedure (continued) Current limit 16. Adjust the RV53 variable resistor on the PCB A-200 so that the unit ammeter indication is the same when the CURRENT/VOLT. LIMIT switch is held down and released. See Figs. 6-9, 6-10, and 6-11. This completes the current system adjustment.
  • Page 111 Never touch this variable resistor. PCB A-200 RV49 (Maximum variable constant-currnt range ADJ) RV53 (Currnt limit ADJ) Fig. 6-10 RV49 and RV53 in the TYPE IV model PCB A-200 Never touch this RV49 (Maximum variable variable resistor. constant-currnt range ADJ) RV53 (Currnt limit ADJ) Fig.

  • Page 112: Replacing The Input Fuse (Type Iii And Type Iv Models Only)

    TYPE III and TYPE IV models contain a spare input fuse to allow replacement by the user if the input fuse blows. The input fuse cannot be replaced by the user for TYPE V models. Contact Kikusui distributor/agent for replacement.
  • Page 113 Remove the input fuse from the fuse holder and replace with a new fuse. See Fig. 6-13. Select an input fuse with a rating adequate to the input power voltage range. Table 6-3 Input fuse 16-100L 35-50L 35-60L 60-35L 110-20L 250-8L For 200 V 30 A...
  • Page 114 Replacing an input fuse for TYPE IV models Remove the front cover from the unit. See Fig. 6-14. Hexagon socket head bolt M6-14L 4 pieces Fig. 6-14 Removing the front cover from the TYPE IV model Remove the input fuse from the fuse holder and replace with a new fuse. See Fig.

  • Page 115: Malfunctions And Causes

    The input fuse is blown. • The input voltage is too high. In this case, an internal part may be damaged, requiring repair. Contact Kikusui distributor/agent. The lamp has gone off. • A break in the AC power cord Lamps turn on and off in sequence, causing •...
  • Page 116 Symptom 3: Excessive output is produced. Check item Possible cause and remedy The shorting bar connecting terminals 3 and 4 • Install the shorting bar properly. of the control terminal board has been removed or is loose. The output voltage (current) does not fall. •...

  • Page 117: Chapter 7 Specifications

    Chapter 7 Specifications This chapter provides the electrical and mechanical specifications for the PAD-L series, as well as a list of accessories. PAD-L Specifications...

  • Page 118: Type Iii Models Specifications

    TYPE III models specifications Unless otherwise specified, the specifications of the unit are based on the following conditions. • The load is a pure resistance. • The - (neg.) output terminal is connected to the GND terminal. • The unit should be used after 30 minutes warming-up time. Standard value and theoretical value do not guarantee performance.
  • Page 119 Type III 16-100L 35-50L 35-60L 60-35L 110-20L 250-8L Range of operation temperature and humidity 0 to 40 ℃ / 10 to 90 %RH (no dew condensation allowed) Range of storage temperature and humidity -10 to 60℃ /  0 to 70 %RH (no dew condensation allowed) Cooling system Forced air cooling with fan Output polarity Positive or negative grounding possible Isolation voltage ±250 V ±250 V ±250 V ±250 V ±250 V ±500 V Insulation resistance Across chassis and input terminals 500VDC, 30MΩmin.  Across chassis and output terminals 500VDC, 20MΩmin.  Withstanding voltage Across input terminals and output terminals Should withstand 1500 VAC, 1 min. with no abnormalities Across input terminals and chassis Meter display Voltmeter Full scale, Class 2.5 (JIS) 16 V 35 V 35 V 60 V 110 V 250 V Ammeter Full scale, Class 2.5 (JIS) 110 A...
  • Page 120 Power consumption chart (TYPE III models) PAD16-100L PAD35-50L Output voltage [V] Output voltage [V] PAD35-60L PAD60-35L Output voltage [V] Output voltage [V] PAD110-20L PAD250-8L 100 110 Output voltage [V] Output voltage [V] Specifications PAD-L...
  • Page 121 Dimensional drawings (TYPE III models) Output terminal cover MAX 562 Unit: mm PAD-L Specifications...

  • Page 122: Type Iv Models Specifications

    TYPE IV models specifications Unless otherwise specified, the specifications of the unit are based on the following conditions. • The load is a pure resistance. • The - (neg.) output terminal is connected to the GND terminal. • The unit should be used after 30 minutes warming-up time. Standard value and theoretical value do not guarantee performance.
  • Page 123 Type IV 35-100L 60-60L 110-30L 250-15L Range of operation temperature and humidity 0 to 40 ℃ / 10 to 90 %RH (no dew condensation allowed) Range of storage temperature and humidity -10 to 60℃ /  0 to 70 %RH (no dew condensation allowed) Cooling system Forced air cooling with fan Output polarity Positive or negative grounding possible Isolation voltage ±250 V ±250 V ±250 V ±500 V Insulation resistance Across chassis and input terminals 500VDC, 30MΩmin.  Across chassis and output terminals 500VDC, 20MΩmin.  Withstanding voltage Across input terminals and output terminals Should withstand 1500 VAC, 1 min. with no abnormalities Across input terminals and chassis Meter display Voltmeter Full scale, Class 2.5 (JIS) 35 V 60 V 110 V 250 V Ammeter Full scale, Class 2.5 (JIS) 110 A 60 A 32 A 15 A Remote control 35 V /...
  • Page 124 Power consumption chart (TYPE IV models) PAD35-100L PAD60-60L Output voltage [V] Output voltage [V] PAD110-30L PAD250-15L 100 110 Output voltage [V] Output voltage [V] Specifications PAD-L...
  • Page 125 Dimensional drawings (TYPE IV models) Output terminal cover Type V 35-100L 60-60L 110-30L 250-15L MAX 70 MAX 42 MAX 562 MAX 534 Unit: mm PAD-L Specifications...

  • Page 126: Type V Models Specifications

    TYPE V models specifications Unless otherwise specified, the specifications of the unit are based on the following conditions. • The load is a pure resistance. • The - (neg.) output terminal is connected to the GND terminal. • The unit should be used after 30 minutes warming-up time. Standard value and theoretical value do not guarantee performance.
  • Page 127 Type V 35-200L 60-120L 110-60L Range of operation temperature and humidity 0 to 40 ℃ / 10 to 90 %RH (no dew condensation allowed) Range of storage temperature and humidity -10 to 60℃ /  0 to 70 %RH (no dew condensation allowed) Cooling system Forced air cooling with fan Output polarity Positive or negative grounding possible Isolation voltage ±250 V Insulation resistance Across chassis and input terminals 500VDC, 30MΩmin.  Across chassis and output terminals 500VDC, 20MΩmin.  Withstanding voltage Across input terminals and output terminals Should withstand 1500 VAC, 1 min. with no abnormalities Across input terminals and chassis Meter display Voltmeter Full scale, Class 1.5 (JIS) 40 V 66 V 120 V Ammeter Full scale, Class 1.5 (JIS) 200 A 120 A 60 A Remote control Output voltage/control voltage ratio 35 V / approx. 10 V 60 V / approx. 10 V 110 V / approx. 10 V Output voltage/control resistance ratio 35 V / approx. 10kΩ...
  • Page 128 Power consumption chart (TYPE V models) PAD35-200L PAD60-120L Output voltage [V] Output voltage [V] PAD110-60L 100 110 Output voltage [V] 7-12 Specifications PAD-L...
  • Page 129 Dimensional drawings (TYPE V models) Output terminal cover Type V 35-200L 60-120L 110-60L MAX 70 MAX 42 MAX 612 MAX 584 Unit: mm PAD-L Specifications 7-13...
  • Page 130 7-14 Specifications PAD-L...

  • Page 131: Index

    Inspection 6-2 Index Installation 1-3 Isolation voltage 2-9 Symbol +S 5-10 Load 2-3 -S 5-10 load cables 3-8 A.FS variable resistor 5-5 Malfunctions 6-17 AC input terminal board 5-11 Master-slave-control parallel operation 4-22 AC power cord 1-10 Master-slave-control series operation 4-26 Accessories 1-2 moving 1-6 Adjustment 6-3...
  • Page 132 Turning on the power 3-2 V.FS variable resistor 5-5 V.OS variable resistor 5-5 VOLTAGE CHECK terminals 5-5 VOLTAGE setting knob 5-5 Voltmeter 5-4 Voltmeter zero-adjustment 5-4 Index PAD-L...

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Pad-l iv seriesPad-l v seriesPad16-110lPad35-50lPad35-60lPad60-35l ... Show all

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