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    User name brads

    Log entry time 17:39:09 on October 11, 2008

    Entry number 243651

    This entry is a followup to: 243631

    keyword=BB magnet beacons (late entry)

    The BigBite magnet beacons weren't functioning at full current again. The beacons will turn on at low field (ie. up to 300A) but then turn off again as the current/field increases. I presume that the little window sensor magnetic switch just can't handle such a large field and stops functioning properly.

    I ended up moving the probe to a position on the the BB side of the field clamp. In that position it would turn on and stay on for currents from ~150A up to the max field of 700A.

    If we really need the beacons to turn on for fields below 150A then perhaps a second magnetic switch should be wired in parallel and moved a little closer to the pole faces.