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  1. thatmarkdude

    Patent for Cast-Resin Transformer

    Hey, Can anyone tell me where I could find a patent for a Cast-Resin Transformer, first invented by AEG in Germany in 1965? I have found this website: http://www.dpma.de/english/patent/index.html however it doesn't appear to be that useful. Any help would be appreciated, Thanks.
  2. thatmarkdude

    Contactor & Fuse Combinations

    Hey, I'm attempting to redesign a switch and the new design in supposed to encorporate contactors in series with fuses. However, one of the requirements is for no contact welding to occur. The rated surrent has been calculated as 2405A and the maximum fault current is 40kA. So I understand...
  3. thatmarkdude

    Switch-disconnectors

    Is a switch- disconnector just another name for a disconnect switch? Are these circuit elements operated manually (by hand)? If regular switching is required in the circuit, will it be necessary to also incorporate contactors in series? Thanks, Mark

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