Non-contact electrical parameter measurement systems

US10352967B2 · kind B2 · utility

Assignee

• Fluke Corporation · US

Inventors

• Ronald Steuer · Hinterbrühl, AT
• Peter Radda · Vitis, AT
• Ricardo Rodriguez · Mill Creek, US
• David L. Epperson · Spokane, US
• Patrick Scott Hunter · Seattle, US
• Paul A. Ringsrud · Langley, US
• Clark N. Huber · Everett, US
• Christian Karl Schmitzer · Brunn am Gebirge, AT
• Jeffrey Worones · Seattle, US
• Michael F. Gallavan · Edmonds, US

Key dates

• Filing date: Jun 16, 2017
• Grant date: Jul 16, 2019
• Expiry date: Sep 6, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R19/25
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems and methods provide measurement of alternating current (AC) electrical parameters in an insulated wire without requiring a galvanic connection between the insulated wire and a test probe. Measurement systems or instruments may include a housing that includes both a non-contact voltage sensor and a non-contact current sensor. The measurement system obtains measurements from the voltage sensor and the current sensor during a measurement time interval and processes the measurements to determine AC electrical parameters of the insulated wire. The AC electrical parameters may be presented to an operator via a visual indicator device (e.g., display, lights). The AC electrical parameters may additionally or alternatively be communicated to an external device via a wired and/or wireless communications interface. The measurement system may include an alignment feedback sensor that provides feedback to a user regarding the mechanical alignment of the insulated wire relative to the voltage sensor and the current sensor.