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BECA-Technical Memo - To Dr Jeffrey D Johnson Chief...

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To: Dr. Jeffrey D. Johnson Chief, Electronics Division From: Jonathan Brate Electronics Division Subject: Parallel Transformers to Increase High Voltage Power Date: 12/1/2010 Introduction: This technical memorandum is being written to discuss the possible upsides and downsides of running multiple transformers in parallel to increase the high voltage output of an electrical system. Transformer paralleling is usually used for some justifiable reasons. For example, power distribution expansion or rebuilt with some expansion, significant savings on using smaller standard transformers off-the-shelf, specialty applications, to obtain high currents, etc. Figure 1 is a good depiction of what running transformers in parallel looks like and how it works. Per my supervisor’s request, this topic is being researched and documented. Problem Statement: In 2001, an engineer asked some colleagues if running distribution transformers in parallel would be safe as he has two transformers, one being 1000 kVA and the other 500 kVA.
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