AN AC CURRENT OR VOLTAGE SENSOR
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Accused Products
Abstract
A current sensing device (1) for producing a voltage indicative of an alternating current flowing in a conductor (2) comprises a support element (5) within which a carrier element (11) is located. The carrier element (11) comprises a primary substrate (12) which is formed into a multi-channel arcuate configuration defining a plurality of longitudinally extending channels (13) with side walls (16) on which planar coils (17) are formed on respective opposite first and second major surfaces (14,15) of the primary substrate (12). The carrier element (11) is located and retained in the multi-channel arcuate configuration in a primary retaining recess (38) in the support element (5) with the planar coils (17) defining planes which extend radially from a main central axis (6) defined by the support element (5). The planar coils (17) are connected in series so that the voltages produced in the coils by the alternating current flowing in the conductor (2) are summed in phase and the sum of the respective voltages is produced across terminals (20,21) of a first output port (19). Capacitive plates of a capacitor may also be formed on the first and second major surfaces (14,15) of the primary substrate (12) or on a separate substrate in order to produce a signal indicative of the alternating voltage in the conductor (2).
42 Citations
307 Claims
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1-287. -287. (canceled)
- 288. A current sensing device for producing a signal indicative of an alternating current flowing in a conductor, the current sensing device comprising a support element adapted to extend at least partly around the conductor and defining a main central axis, and a plurality of planar coils located in the support element and defining respective planes extending substantially along and substantially radially from the main central axis, the coils being circumferentially spaced apart around the support element and being electrically connected in series so that the voltages induced in the coils by an alternating current flowing in the conductor are summed in phase to produce the signal indicative of the alternating current flowing in the conductor.
- 301. A carrier element comprising an elongated primary substrate of a bendable material defining a pair of opposite first and second major surfaces and having a plurality of planar coils formed on at least one of the first and second major surfaces thereof at spaced apart intervals along the primary substrate, the primary substrate being adapted to be formed into a multi-channel configuration and to be supported in a support element with the coils circumferentially spaced apart around a main central axis defined by the support element and defining respective planes extending substantially along and substantially radially from the main central axis defined by the support element.
- 304. A method for producing a signal indicative of an alternating current flowing in a conductor, the method comprising providing a support element adapted to extend at least partly around the conductor and defining a main central axis, providing a plurality of planar coils in the support element with the coils defining respective planes extending substantially along and substantially radially from the main central axis and being spaced apart circumferentially around the main central axis, and electrically connecting the coils in series so that the voltages induced in the coils by an alternating current flowing in the conductor are summed in phase to produce the signal indicative of the alternating current flowing in the conductor.
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307. A voltage sensing device for producing a signal indicative of an alternating voltage in a conductor, the voltage sensing device comprising a support element adapted to extend at least partly around the conductor and defining a main central axis, a first capacitor carried in the support means, the first capacitor comprising a first substrate defining opposite first and second major surfaces, a first capacitor plate located on the first major surface of the first substrate, and a second capacitor plate located on the second major surface with the first substrate located therebetween forming a dielectric of the first capacitor, the first substrate being configured into an arcuate configuration, and extending at least partly around the main central axis defined by the support element.
Specification