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  1. otto452

    Devlopment of 270 VDC

    Thanks for the information everyone. I was also wondering where the decision to use 270VDC came from. Sure the current goes down as you increase voltage, but why not use the rectified 3-phase AC voltage directly? Then you wouldn't need a transformer/rectifier (you could just use a...
  2. otto452

    Devlopment of 270 VDC

    Thanks for the information IRstuff and FieldTeam, but I'm still struggling to see how the three phase rectified voltage from 115/400 VAC results in 270 VDC. The RMS value of 115 VAC is 115*.707= ~81 VDC. How do three phases of 81VDC lead to 270VDC? I know I'm missing something, but the...
  3. otto452

    Devlopment of 270 VDC

    In working with military aircraft power systems, I've come across 270 VDC systems before. Where does the decision to go with 270 VDC come from? I had heard that it was derived from using 3 phase 400 hz 115/200 VAC power but I'm not sure how do the conversion to get 270 VDC.

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