141V power supply

Discussion in 'General Electronics Chat' started by fastwalker, Aug 5, 2009.

  1. fastwalker

    Thread Starter Active Member

    Jun 24, 2009
    38
    0
    Hi All,

    I have a project coming up which involves using pumps which require 141VDC at around 1amp. Anyone have any ideas on what to use as a power supply for these (first in the lab, then in the field).

    Thanks for any suggestions,
    FW
     
  2. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    Can you post a link a spec' sheet on the pumps?

    Ken
     
  3. Fuzzy54

    Member

    Jun 9, 2006
    11
    0
    What is the input voltage? any size requirements?
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
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    Are you using 120volt or 220 volt mains?
     
  5. fastwalker

    Thread Starter Active Member

    Jun 24, 2009
    38
    0
    Guys, the specs. I have are inline below, hope they come through OK. I could use either 115 or 220V on the input. No real size requirements.

    Specifications & Performance
          Item   

    Note

    Specification
     Rated Operation Voltage
    DC141V


     Pump Type
    DC pump
     DC driver operation
    Performance Change

     Bearing Type
    Liquid sleeve Bearing


     Motor Type
    Brushless DC Motor

     Insulation
    Class E(Coil temperature is under 115 degrees Celsius)


    Rated Motor Speed
    4,600 RPM

    Vibration Level
    15μm or less (at Rated point)

    Electric Character
    Operation Voltage Range(Vm)
    DC141V ±10%
    ※3

    Circuit Control Voltage Range(Vcc)
    DC15V ±10%

    Flow Control Signal Voltage(Vs)
    DC 0V to 5.0V (Analog)

    Power Consumption
    150 W ±15% (at Rated performance)


    Operation Current
    1.3A ±15% (at Rated performance)



    Electrical Current fuse
    3.0A


    Current Cut Value
    2.2A ±10%


    Motor Operation Start Voltage
    DC141V ±10%


    Insulation Resistance
    At DC 500V, 100 MΩ or more (at cold)



     Output Signal for the RPM
    Signal:4 pulses/round (Output Duty : approximately 67%)
    Signal Form : Open Collector
    Output current volume : 5mA
    Maximum Input Voltage:50V
    (Recommended Pull Up Voltage : DC 15V)
    (Recommended Pull Up Resistance : 10kΩ)
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    I think everyone is scratching their heads because of the very odd voltage. No standard transformer gives 141 volts as a rectified output. Two 48 volt windings in series come close (134.4 volts).

    At least the current is low enough that some combination of conventional transformers is possible.
     
  7. Fuzzy54

    Member

    Jun 9, 2006
    11
    0
  8. t06afre

    AAC Fanatic!

    May 11, 2009
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    1,222
    This is just from the top of my head. But if you look at the datasheet for the Lm723 you will find some examples for a high voltage regulator. say you have 120 volt Ac. after rectifying and filter cap say 1000uF, you will have ca 169 volt dc max. Assumed we use half wave rectifying and the 1000uF filter cap the ripple will be ca 18 volt before the regulator at 1 A load. And this will take some load of the heat sink but you still need a large one. But I think this may work at least in the lab. Remember the diode must have a Vrrm better than 2xmains voltage. Also some inrush current protection are needed i guess. If you have a Variable Voltage Autotransformer you can use this for reducing the needed heat sink size.
    It is just suggestion ;)
     
  9. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    fastwalker,

    Could post a link to the manufacturer/vendor of this pump/controller?

    ken
     
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