Re: Q.what is mean by ratio current transformer 1800:1

From: Robert Baer (robertbaer_at_earthlink.net)
Date: 02/18/05 

Date: Fri, 18 Feb 2005 08:55:27 GMT

spanv wrote:
>
> Hi,
>
> I am working on project on single phase energy meter.I need
> current transformer having ratio 1800:1 as per recommended in data*** of
> ic ADE7753
> which is used as energy measurment ic.This current trasformer providung
> output 0.5v when burden resistor connected less than 10ohm.I am get
> confuse abut CT 1800:1.Please send me information about CT.
> Thanking You
>
>

  Most likely that current transformer is wound with 1800 turns and has
2 terminals to connect that 10 ohm load (and measuring device(s).
  Ome would run a single wire from the power source thru the center to
the power load.
  This, then is 1800:1 turns ratio.
  To make one, one could take an un-needed small filament transformer,
remove all of the wire, and wind 1800 turns on the bobbin. Use largest
wire size to allow enough space for that one other wire.

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