On Mon, 07 May 2007 06:28:41 GMT Salmon Egg wrote: | On 5/6/07 6:56 PM, in article snipped-for-privacy@news5.newsguy.com, | " snipped-for-privacy@ipal.net" wrote: | |> Given a transformer of known specification normally associated with a |> transformer (e.g. voltage of winding, volt-amps capacity, impedance |> percentage), is it possible to go from that to figure the inductance |> to determine the absolute impedance and thus the maximum current it |> would pass when wired as an inductor? It would seem to me that this |> should be possible, because given these specifications, the maximum |> current when used as a transformer is known. But I don't know the |> relationship between that and open circuit inductance. Also, there |> are a couple possible ways to do the wiring: use one of the windings |> or use all of them in series with the appropriate connection order. | | You are talking about the first things you learn in a course on ac electric | machines. Essentially, you can represent a transformer by its equivalent | circuit. It a three terminal network. A tee of three inductors does a decent | job. From the hot input, there is a primary leakage inductor connected to a | secondary leakage inductor to a hot output terminal. From the junction of | these inductors, there is another magnetizing inductor connection going to | the common neutral of the network. | | From this network, you should be able to figure out how to determine the | inductor values from measurements at the terminals using shorts and opens on | primary and secondary. You do have to throw in compensating factors for any | step up and step down.
How do you "measure" it without an actual transformer? If I described a specific transformer, could you tell me the equivalent Henries its primary and secondary windings have?