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US 12,494,308 B2Granted
Graded spark gap design for internally gapped surge arrester
AssigneeHubbell Incorporated
InventorStephen Franklin Poterala
Life of this patent
Estimating the term…
Abstract
An arrester including a metal oxide varistor (MOV) disc and a spark gap assembly electrically connected in series with the MOV disc. The spark gap assembly includes a spark gap and a frequency-dependent grading capacitor electrically connected in parallel with the spark gap.
Claims18
An arrester comprising:
- a metal oxide varistor (MOV) disc;
- and
- a spark gap assembly electrically connected in series with the MOV disc, the spark gap assembly including,
- a spark gap;
- and
- a frequency-dependent grading capacitor electrically connected in parallel with the spark gap, wherein a capacitance of the frequency-dependent grading capacitor decreases as a frequency of a voltage across the frequency-dependent grading capacitor increases.
3 more elements
An accessory device electrically connected in series with an arrester, the accessory device comprising:
- a spark gap assembly including:
- a spark gap;
- and
- a frequency-dependent grading capacitor electrically connected in parallel with the spark gap, wherein a capacitance of frequency-dependent grading capacitor decreases as a frequency of a voltage across the frequency-dependent grading capacitor increases.
1 more element
Dependencies are inferred from the claim text.