Arrangement for non-reversible detection and display of electrical overcurrents or current limit values by means of a pre-finished conductor

US11410802B2 · kind B2 · utility

Assignee

• DEHN SE + CO KG · DE

Inventors

• Edmund Zäuner · Berching, DE
• Sascha Ludewig · Dresden, DE
• Georg Wittmann · Herzogenaurach, DE

Key dates

• Filing date: Jun 20, 2018
• Grant date: Aug 9, 2022
• Expiry date: Feb 4, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01H37/761
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The invention relates to an arrangement for non-reversible detection and display of electrical overcurrents or current limit values by means of a pre-finished conductor. The conductor according to the invention has at least two conductor sections, spaced apart from each other and extending parallel to each other, which are designed for current to flow through in the same direction. At least one of the parallel conductor sections has a protrusion, a nose, or similar blocking element, which limits the path of movement of a mechanical display or switching element, such that the electromagnetic force acting on the parallel conductor sections during the flow of current transitions the blocking element into a release position in respect of the path of movement of the mechanical display or switching element. Such an arrangement can be used particularly advantageously as a prior damage indicator in surge arresters.