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Thread: Powtran VFD

  1. #1
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    Default Powtran VFD

    good news.
    i recently get in contact with Powtran and they are confirmed that the 415v 3 phase output can be purchase and is not they standard VFD . look like they have workout the way to made they VFD to output 415v 3 phase . i will be getting some to try out as i see good report about this brand.
    now the question for guys here is . they ask me the Output current I need , i already told them I will power the 3 horse power motor which is 2.2kw . they said the current output is 5.1A but they want me to confirm this .
    can some one here know what Current output I should get for my 3 HP Motor ?

    Cheers
    Peter

  2. #2
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    Default

    Quote Originally Posted by thorens View Post
    good news.
    i recently get in contact with Powtran and they are confirmed that the 415v 3 phase output can be purchase and is not they standard VFD . look like they have workout the way to made they VFD to output 415v 3 phase . i will be getting some to try out as i see good report about this brand.
    now the question for guys here is . they ask me the Output current I need , i already told them I will power the 3 horse power motor which is 2.2kw . they said the current output is 5.1A but they want me to confirm this .
    can some one here know what Current output I should get for my 3 HP Motor ?

    Cheers
    Peter
    current output per phase or total?
    Gold, the colour of choice for the discerning person.

  3. #3
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    Quote Originally Posted by .RC. View Post
    current output per phase or total?
    I would say total by the look of it.

    Peter

  4. #4
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    Default

    Peter. I have one of those on my mill, if I was to buy again I would get a bigger one.
    My motor is 3hp also, I bought a PI9000 2.2kW, 3-phase 415VAC, 5.1A,
    It works well, but it goes into a fault (over current) and stops, even when I set the ramp up acceleration and deceleration to 15 seconds,
    from memory it does this at about 75 hz, I can get it higher if I gently adjust the speed by the pot/knob.
    Maybe someone more knowledgeable than me can shed some light on this, but I feel a larger VFD would be the answer.

    shed

    ps. a brake resistor would solve the deceleration problem, about 30 bucks I think ?
    Last edited by shedhappens; 7th Aug 2015 at 06:59 PM. Reason: more

  5. #5
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    Default

    For what its worth the Huanyang manual lists the output current of their 3 phase 380V input 2.2kW as 5.0A.

    Their 220V model is 10A..........So I'm guessing its per phase.....I'm not sure talking about total makes sense??

    Stuart

  6. #6
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    Yeah, convention with 3 phase current is to refer to a single phase for current.

    I'm no electrical guru but by my reckoning, if the motor was delta wound then the current in one phase would go out the other two so total current would be zero... right?

  7. #7
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    Quote Originally Posted by shedhappens View Post
    Peter. I have one of those on my mill, if I was to buy again I would get a bigger one.
    My motor is 3hp also, I bought a PI9000 2.2kW, 3-phase 415VAC, 5.1A,
    It works well, but it goes into a fault (over current) and stops, even when I set the ramp up acceleration and deceleration to 15 seconds,
    from memory it does this at about 75 hz, I can get it higher if I gently adjust the speed by the pot/knob.
    Maybe someone more knowledgeable than me can shed some light on this, but I feel a larger VFD would be the answer.

    shed

    ps. a brake resistor would solve the deceleration problem, about 30 bucks I think ?
    Hi Shed.
    thanks for sharing your thought . so what is your sugesstion on a higher power unit ?
    the one i was quoted for is the PI9130.
    should the 4kw / 10a do the trick ? i will order with brake .
    Peter

  8. #8
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    Quote Originally Posted by thorens View Post
    should the 4kw / 10a do the trick ? i will order with brake .
    No idea why Sheds VSD is tripping, but I'm not so sure a bigger VSD is necessarily going to fix the problem, though it might let you blow the motor up
    Have you thought about how you're going to supply a 4kW unit?

    Stuart

  9. #9
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    Peter, sorry but I don't think I am the right bloke to be advising you on this, these things are alien technology to me.
    I suggest that you email Chris at Powtran [email protected] he is very helpful, other than that there are others in here that are pretty cluey with this star wars type of technology,
    My personal thoughts are that I should have bought a 4 hp VFD.

    shed

  10. #10
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    Quote Originally Posted by Stustoys View Post
    No idea why Sheds VSD is tripping, but I'm not so sure a bigger VSD is necessarily going to fix the problem, though it might let you blow the motor up
    Have you thought about how you're going to supply a 4kW unit?

    Stuart

    good point. no i haven't just my power point i think it is 20amp

    Peter

  11. #11
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    Quote Originally Posted by thorens View Post

    good point. no i haven't just my power point i think it is 20amp

    Peter
    Peter........ a bit of clarification, the VFD I have is 415v to 415v, why? because it gives me variable speed

    shed

  12. #12
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    Quote Originally Posted by thorens View Post
    good point. no i haven't just my power point i think it is 20amp
    Isnt the largest "normal" power point 15amps? (even then its not exactly "normal". i.e. the large earth pin)

    Stuart

  13. #13
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    Quote Originally Posted by Stustoys View Post
    Isnt the largest "normal" power point 15amps? (even then its not exactly "normal". i.e. the large earth pin)

    Stuart
    nah, I put a 20amp in for mig welding

    eg http://www.isupplyelectrical.com.au/...target_parent/

  14. #14
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    Hey they come in 25 and 32amp........ though they look a little less normal I assume a standard 10Amp plug will fit?

    Learn something new every day

  15. #15
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    Quote Originally Posted by Stustoys View Post
    Hey they come in 25 and 32amp........ though they look a little less normal I assume a standard 10Amp plug will fit?

    Learn something new every day
    all it different is the ground being bigger for the 20amp than the normal 10amp socket

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