Spark gap

Details Spark gap Spark gap

1998-04-27

1999-10-05

Sherry, Michael J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361123, H02H 100

Patent

active

059634138

ABSTRACT:
A spark gap for use in the power supply of medium voltage and low voltage networks, wherein two rotationally symmetric electrodes are arranged in a housing and an arc space is provided between the two electrodes for the arc which is formed in the event of a spark-over and its follow-on current. The two electrodes are arranged in the direction of the longitudinal center axis of the spark gap one behind the other and at a distance from each other. A disk of an electrically insulating material is positioned perpendicularly of the longitudinal center axis so as to electrically separate the two electrodes from each other. The insulating disk has an opening adapted to the hollow cylindrical inner space forming the spark-over place for the arc. The arc space includes a rotationally symmetric arc chamber arranged concentrically with the longitudinal center axis for the follow-on current. The arc chamber is positioned between the two electrodes. The electrically active length of the arc chamber can be selected differently while the outside dimensions of the spark gap are maintained.

REFERENCES:
patent: 3141108 (1964-07-01), Benner et al.
patent: 3780350 (1973-12-01), Sanger et al.
patent: 4433354 (1984-02-01), Lange et al.

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