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  • Users: babyG
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  1. babyG

    transformer efficiency

    I have a transformer thats 50MVA It has a combined load+noload loss of 250kW Does this give me (a roughly estimated) transformer with an efficiency of 99.5%? - ignore hysteresis etc... Another engineer says its got an efficiency of 50% and I'm pretty sure thats wrong ..... so just checking :)
  2. babyG

    Transformer refurbishment - implications

    Hi, I am trying to determine the implications of carrying out transformer refurbishments on transformers (only on decent transformers - for those with extremely low DPs we dont touch them). I would like to know if there is a general rule of thumb on how much longer a transformer's life will be...
  3. babyG

    power transformer courses

    can anyone recommend the best power transformer course to go to ? (more into operation and maintenance, but some design is good too)
  4. babyG

    Transformer cooler design

    I am looking at changing a xfmr from ODWF to OFAF/OFAN. If i change the heat exchangers, do I need to worry about the pressure from the pumps?
  5. babyG

    powering an ultrasonic transducer 28kHz

    I have a 28kHz utrasonic transducer which I wish to operate. I need to build a driver to squeeze max power out of this transducer (specs say approximately 70W) After some discussion a few ideas were thrown around, including using a resonant RLC amp, etc. i would like some advice on how i should...

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