Grid Tied System to Primary Voltage OK?
I'm currently proposing a 1 megawatt system to a food processing company that has a 1200A 3-Phase 12,000v main (Utility Company Primary Voltage). The main has a large capacitor and a large step down transformer to create 4000A of 277/480v 3-phase. There is plenty of room on the 4000A main to back feed into without overloading the bus bars. My question is if there is any problem with doing this with regards to the step down transformer or capacitor? I'm assuming the step down transformer acts in a fashion similar to that of a utility owned transformer? Does anyone have experience with this kind of system?
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