File:37.5kVA three phase utility stepdown.jpg

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English: A three-phase utility stepdown transformer bank (37.5 kVA per phase) on a pole behind a business in Niles, Illinois, United States. Three single phase transformers are connected together in a wye configuration to act as a three phase transformer. This is used in the US to provide three phase power at secondary voltages used by commercial customers.
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Author Kelly Martin
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(Reusing this file)		 Own work, share alike, attribution required (Creative Commons CC-BY-SA-2.5)
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current22:08, 17 December 2006Thumbnail for version as of 22:08, 17 December 20062,520 × 2,137 (220 KB)Kelly Martin (talk | contribs){{Information| |Description=A three-phase utility stepdown transformer array (37.5 kVA per phase) mounted aerially behind a business. Photographed in Niles, Illinois, United States. |Source=own work |Date=December 17, 2006 |Author=Kelly Martin |Permissio

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