Non-contact current and voltage sensor having detachable housing incorporating multiple ferrite cylinder portions
A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing formed from two portions that mechanically close around the wire and that contain the current and voltage sensors. The current sensor is a ferrite cylinder formed from at least three portions that form the cylinder when the sensor is closed around the wire with a hall effect sensor disposed in a gap between two of the ferrite portions along the circumference to measure current. A capacitive plate or wire is disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.
- Research Organization:
- INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0002897
- Assignee:
- INTERNATIONAL BUSINESS MACHINES CORPORATION (Armonk, NY)
- Patent Number(s):
- 9,322,855
- Application Number:
- 14/319,389
- OSTI ID:
- 1248868
- Country of Publication:
- United States
- Language:
- English
Non-contact voltage measurement using electronically varying capacitance
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journal | January 2010 |
Current Sensing Techniques: A Review
|
journal | April 2009 |
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