Loading ...
Sorry, an error occurred while loading the content.

Re: Allen-Bradley a speed controller

Expand Messages
  • jubalearly2001
    240v, single phase or 3 phase, is the RMS voltage. Peak voltage is about 1.4 times RMS, or around 336v, IIRC. Now, if you don t have a sine wave, the 1.4 may
    Message 1 of 4 , Jun 26, 2002
    • 0 Attachment
      240v, single phase or 3 phase, is the RMS voltage. Peak
      voltage is about 1.4 times RMS, or around 336v, IIRC. Now, if you
      don't have a sine wave, the 1.4 may not be the correct factor


      --- In microhydro@y..., "H.G." <garciah@f...> wrote:
      > DAVID:
      >
      > I am QUITE INTERESTED in getting info or specifications on your
      unit, can
      > you give the model and where to get additional info like power
      output,
      > frequency stability etc.
      >
      > I wonder why you have voltage spikes, it should not occur at all.
      >
      > Regards
      >
      > Nando
      >
      > Message: 5
      > Date: Mon, 06 May 2002 11:06:43 -0700
      > From: David Green <barclay@s...>
      > Subject: Re:Inverters, speed controllers
      >
      > I have just bought from Allen-Bradley a speed controller that
      converts 115
      > AC single phase into 230 volt three phase with frequency control.
      The
      > current phasing is very smooth but the voltage has spikes up to 325
      > volts. I know it is backwards from what small hydro needs but
      solid state
      > PLC and frequency controllers seem to be programable to do about
      anything
      > nowadays.
      >
      > It sure would be easier on the small hydro owner to have programable
      > controls. This unit by the way was under $400 US.
      >
      > David
    Your message has been successfully submitted and would be delivered to recipients shortly.