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Your post sent me searching for the Graybar catalog that I have here, as I remember seeing a xfmr section in it, mostly Square D dry types.
I notice that several with 480V primaries specify 2.5% taps, 2 above and 4 below nominal 480.
I see as well that there is a range of single-phase types up to 100kVa or more with a 120/240 secondary and a 240/480 primary. I assume this is so the same version can be hooked-up to a 277/480 Y or a 240 delta supply?
We don't have such an arrangement of different supply systems here. 240/415V Y is the standard LV; if the load is too great for the PoCo to supply at LV, then they get 11kV delta (or 33kV delta if it's a really big place).
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Entire Thread
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Ok theorists, help me out
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Steve Miller
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05/01/02 12:46 AM
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Re: Ok theorists, help me out
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Steve Miller
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05/01/02 12:50 AM
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Re: Ok theorists, help me out
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pauluk
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05/01/02 08:46 PM
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Re: Ok theorists, help me out
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Steve Miller
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05/02/02 03:00 AM
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Re: Ok theorists, help me out
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Bjarney
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05/02/02 03:23 AM
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Re: Ok theorists, help me out
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pauluk
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05/02/02 07:45 AM
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Re: Ok theorists, help me out
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Bjarney
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05/07/02 03:08 AM
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Re: Ok theorists, help me out
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pauluk
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05/07/02 11:35 PM
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Re: Ok theorists, help me out
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Bjarney
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05/12/02 01:23 AM
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Re: Ok theorists, help me out
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pauluk
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05/12/02 08:43 PM
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Re: Ok theorists, help me out
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hurk27
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05/15/02 06:11 AM
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Re: Ok theorists, help me out
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pauluk
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05/15/02 07:15 PM
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Re: Ok theorists, help me out
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hurk27
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05/16/02 05:14 AM
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Re: Ok theorists, help me out
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pauluk
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05/16/02 09:36 PM
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Re: Ok theorists, help me out
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Scott35
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05/18/02 06:27 PM
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Re: Ok theorists, help me out
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Bjarney
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05/18/02 07:29 PM
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Re: Ok theorists, help me out
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pauluk
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05/19/02 08:34 PM
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Re: Ok theorists, help me out
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Bjarney
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05/19/02 10:05 PM
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Re: Ok theorists, help me out
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Bjarney
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05/20/02 03:08 PM
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Re: Ok theorists, help me out
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pauluk
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05/20/02 06:30 PM
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Re: Ok theorists, help me out
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Bjarney
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05/23/02 06:23 PM
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Re: Ok theorists, help me out
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JBD
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05/23/02 08:48 PM
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Re: Ok theorists, help me out
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pauluk
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05/24/02 09:56 AM
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Re: Ok theorists, help me out
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resqcapt19
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05/24/02 11:49 AM
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Re: Ok theorists, help me out
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JBD
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05/24/02 01:11 PM
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Re: Ok theorists, help me out
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resqcapt19
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05/24/02 02:47 PM
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Re: Ok theorists, help me out
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Scott35
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05/25/02 03:28 AM
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Re: Ok theorists, help me out
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Scott35
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05/25/02 03:35 AM
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Re: Ok theorists, help me out
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pauluk
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05/25/02 01:33 PM
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Re: Ok theorists, help me out
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Bjarney
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05/25/02 08:13 PM
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Re: Ok theorists, help me out
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Bjarney
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05/25/02 08:55 PM
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Posts: 362
Joined: April 2003
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