Abstract An overvoltage arrester for use on AC or DC voltages comprises a voltage dependent leakage component connected in series with a quenching arc path constituted by a series arrangement of main spark gaps and a magnetic blowing coil for extending the arcs drawn across the main spark gaps. An auxiliary spark gap is structurally associated with and serves when struck to ignite each main spark gap and these ignition are connected in series with a first auxiliary impedance which may be an ohmic resistance to establish an auxiliary series circuit that is connected in parallel with the series circuit formed by the leakage resistance component and the main spark gaps. A second auxiliary impedance component which also may be an ohmic resistance is provided for and connected in parallel with each of the ignition spark gaps. Each of the main spark gaps may be paralleled by an auxiliary impedance component, and each of the auxiliary impedance components may be paralleled by a capacitor. The auxiliary impedance components may be lumped or they may be sub-divided and the partial impedances distributed between and in series with the main and ignition spark gaps, respectively. The string of ignition spark gaps when struck serve to ignite the string of quenching spark gaps whereupon the ignition gaps are then extinguished; the arcs struck at the quenching gaps then expand and cool and are extinguished, and the ignition gaps are then restruck to initiate a new quenching cycle. This cycle is then repeated until the discharge is finally terminated.
Inventors
👤 Werner Latal
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-07 15:00
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/16; H01T4/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
In an overvoltage arrester construction for use in conjunction with direct current and alternating current voltages, the combination comprising a first series circuit constituted by a voltage-dependent leakage resistance means connected in series with a quenching arc path constituted by a series arrangement of quenching spark gaps and a magnetic blowing coil for extending the arcs drawn across spaced electrodes defining the quenching gaps, an ignition spark gap structurally and functionally associated with each of said quenching gaps, each said ignition gap having spaced electrodes thereof positioned adjacent the electrodes of the quenching gap correlated therewith so as to effect ignition of the quenching gap, said ignition gaps being connected in a second series circuit including an impedance means to limit current flow therethrough and said first and second series circuits being arranged in parallel with respect to the arrester connections such that the ignition gaps of said second circuit strike initially upon an occurrance of an overvoltage thereby to effect a striking of the quenching gaps of said first circuit followed by extinction of the ignition gaps, widening of the arcs at said quenching gaps under the magnetic action of said blowing coil, re-striking of said ignition gaps to effect striking of new arcs at said quenching gaps and extinction of the said widened arcs.
Claim 2
Dependent Claim
216 words
In an overvoltage arrester construction for use in conjunction with direct current and alternating current voltages, the combination comprising a first series circuit constituted by a voltage-dependent leakage resistance means connected in series with a quenching arc path constituted by a series arrangement of quenching spark gaps and a magnetic blowing coil for extending the arcs drawn across spaced electrodes defining the quenching gaps, an ignition spark gap structurally and functionally associated with each of said quenching gaps, each said ignition gap having spaced electrodes thereof positioned adjacent the electrodes of the quenching gap correlated therewith so as to effect ignition of the quenching gap, said ignition gaps being connected in a second series circuit including an impedance means to limit current flow therethrough and said first and second series circuits being arranged in parallel with respect to the arrester connections such that the ignition gaps of said second circuit strike initially upon an occurrance of an overvoltage thereby to effect a striking of the quenching gaps of said first circuit followed by extinction of the ignition gaps, widening of the arcs at said quenching gaps under the magnetic action of said blowing coil, re-striking of said ignition gaps to effect striking of new arcs at said quenching gaps and extinction of the said widened arcs.
Claim 3
Dependent Claim
30 words
An overvoltage arrester as defined in claim 1 wherein said impedance means of said second series circuit includes an impedance component connected in parallel with each of said ignition gaps.
Claim 4
Dependent Claim
33 words
An overvoltage arrester as defined in claim 1 wherein said impedance means of said second series circuit includes an impedance component and a capacitor connected in parallel with each of said ignition gaps.
Claim 5
Dependent Claim
54 words
An overvoltage arrester as defined in claim 1 wherein said impedance means of said second series circuit includes an impedance component connected in parallel with each of said ignition gaps and impedances connected between ignition gaps, and wherein said leakage resistance means of said first circuit includes leakage resistance components connected between quenching gaps.