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Title: 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.
Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
1248868
Report Number(s):
9,322,855
14/319,389
DOE Contract Number:
EE0002897
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jun 30
Research Org:
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 47 OTHER INSTRUMENTATION