Mutual inductance current transducer

Patent · Tue Dec 12 04:00:00 EST 1989

OSTI ID:6913037

Hemminger, R C

This patent describes a mutual inductance differential current transducer for producing an analog voltage output signal in response to, and having a level varying linearly with respect to, and having a level varying linearly with respect to, the magnitude and rate of change of a flow of current supplied by an alternating current power line distribution system. It comprises: an elongated current conductor having first and second ends and a substantially straight axial portion therebetween of a predetermined length and defining a central axis; a generally cylindrical sleeve of conductive material of substantially the predetermined length, received coaxially over the elongated current conductor in the straight axial portion thereof and electrically insulated therefrom; a toroidal sensor coil defining a central axis and having an axial length less than approximately one-third the length of the generally cylindrical sleeve and an internal diameter substantially the same as the outer diameter of the cylindrical sleeve and sufficient to position the coil coaxially on the cylindrical sleeve. The coil being positioned coaxially thereon and generally centrally of the length thereof.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): A; US 4887029
• Application Number: PPN: US 7-170173A
• OSTI ID: 6913037
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
AC SYSTEMS
ALTERNATING CURRENT
CURRENTS
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FABRICATION
INDUCTION
POWER SYSTEMS
SIGNALS
TRANSDUCERS