Re: [TCML] Mystery Cylinders on Primary Lines

[davep@xxxxxxxx]

> I figured someone on here would have a good
> notion of just what these things are.  ;^) I assume
> that the "eye" must be temperature sensitive.?

>> Those are overcurrent detectors. They have a spring loaded "eye" that
>> changes color when there is a fault on a phase; so it can be seen from
>> the ground.

  I wager they are 'magnetic': reacting to current flow
  and related fields...

  Here, ferinstance:

  http://ieeexplore.ieee.org/Xplore/login.jsp?url=/stamp/stamp.jsp?arnumber=00855670

   link may require surgery...

   best
    dwp


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