Current and voltage measurement device
US7755347B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/148
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is directed to a current and/or voltage measurement device that allows a user to easily and safely determine current flow by clamping a semi-permanent wrap-around monitor around the power cable without modifying the cable may comprise a plurality of ring-mounted magnetic field sensors which sense magnetic fields produced by the electrical current in the conductors and analysis circuitry for calculating the current in those conductors based on the magnetic field values. In other embodiments, the measurement apparatus may include a plurality of electric field sensors in addition to or in place of the magnetic field sensors, which sense electric fields produced by the electrical current in the conductors which may be used to calculate the voltage in the conductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.