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  1. JY

    White phase earthed VT's

    Thanks for the responses, hopefully I can clarify the lack of information. The location is in Australia, what we have is an 11kV substation with an impedence earthed neutral bus (6.05ohm) which ties the star points of the two incoming 22kV/11kV Delta/Star transformers. The PTs are on every...
  2. JY

    White phase earthed VT's

    Hi, On the plant at which I work we have the convention that on voltage transformers the white phase is tied to earth and the neutral left floating. I believe this arose from the installation in the 50's (Reyrolle gear) and has continued since. My question is does anyone know of the reason...
  3. JY

    Calculating motor decelleration times

    I am looking into a review of motor re-acceleration times where I work. What I need is a reference on how to determine the speed of a motor driving a load (compressor, pump ...) at any time after a complete power loss. If anyone has any good links or references they would be appreciated...

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