High-resistance probe and voltage detector incorporating same
US6323638A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Apr 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/06777
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for testing a conductor for the presence of high AC voltage includes a voltage detection circuit connected to a probe assembly, preferably designed for insertion in the access bushing of an underground electrical transmission or distribution equipment. The probe assembly includes an elongated tubular insulating housing with a conductive probe at one end and a threaded connector at the other end for connection to the detection circuit. A high resistance, preferably several megohms, is connected in series between the tip and the connector and is preferably comprised of a plurality of series-connected resistors encased in a heat shrink tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.