Spark gap assembly for overvoltage protection and surge arrester
AssigneeHubbell Incorporated
InventorsStephen Franklin Poterala, Bastiaan Hubertus van Besouw, Sidharth Suresh Iyer
Life of this patent
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Abstract
A spark gap assembly that includes a first spark gap segment and a second spark gap segment electrically connected in series with the first spark gap segment. The first spark gap includes a first spark gap and a first grading circuit electrically connected in parallel with the first spark gap. The second spark gap segment includes a second spark gap and a second grading circuit electrically connected in parallel with the second spark gap.
Claims17
A spark gap assembly comprising:
- a plurality of spark gap segments, each of the plurality of spark gap segments including a spark gap and a grading circuit connected in parallel with the spark gap, wherein the spark gap assembly includes an initial sparkover voltage greater than one or more subsequent sparkover voltages during a surge event,
- wherein each of the initial sparkover voltage and the one or more subsequent sparkover voltages are greater during a surge event at a normal operating frequency than corresponding ones of the initial sparkover voltage and the one or more subsequent sparkover voltages during a surge event at a high frequency.
An arrester comprising:
- a spark gap assembly including
- a plurality of spark gap segments, each of the plurality of spark gap segments including a spark gap and a grading circuit connected in parallel with the spark gap, wherein the spark gap assembly includes an initial sparkover voltage greater than one or more subsequent sparkover voltages during a surge event,
- wherein each of the initial sparkover voltage and the one or more subsequent sparkover voltages are greater during a surge event at a normal operating frequency than corresponding ones of the initial sparkover voltage and the one or more subsequent sparkover voltages during a surge event at a high frequency.
An accessory device electrically connected in series with an arrester, the accessory device comprising:
- a spark gap assembly including
- a plurality of spark gap segments, each of the plurality of spark gap segments including a spark gap and a grading circuit connected in parallel with the spark gap, wherein the spark gap assembly includes an initial sparkover voltage greater than one or more subsequent sparkover voltages during a surge event,
- wherein each of the initial sparkover voltage and the one or more subsequent sparkover voltages are greater during a surge event at a normal operating frequency than corresponding ones of the initial sparkover voltage and the one or more subsequent sparkover voltages during a surge event at a high frequency.
Dependencies are inferred from the claim text.