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Carbon Composition Resistors



A significant number of our accelerators use old style Allen Bradley 2W carbon resistors like these:

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The accelerator supplier, IBA, can no longer supply them. They have an alternative but do not recommend mixing old and new due to different aging characteristics.


Does anyone know of a supplier of these resistors, generally in the meg ohm range? I would only be looking for small numbers to repair damaged strings like above.


Anecdotally there was a previous problem with this type of resistor where the manufacturing process was changed so that the internal end of the leads was cut to a chisel point which resulted in them exploding when a high voltage was applied.


Best regards


Roger

Parents
  • Thank you both for your replies.

    The manufacturer can supply an alternative but they recommend replacement of the complete set of 96 chains which is a little expensive. The chains are made up of 12 x 10Mohm resistors. Each chain drops up to 35kV DC and operates in 6 Bar of SF6. The chains are installed around an accellerator tube so the length is important.


    Best regards


    Roger
Reply
  • Thank you both for your replies.

    The manufacturer can supply an alternative but they recommend replacement of the complete set of 96 chains which is a little expensive. The chains are made up of 12 x 10Mohm resistors. Each chain drops up to 35kV DC and operates in 6 Bar of SF6. The chains are installed around an accellerator tube so the length is important.


    Best regards


    Roger
Children
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