Cable mounted magnetic core assembly

Details Cable mounted magnetic core assembly Cable mounted magnetic core assembly

1981-08-04

1984-06-26

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324127, 336176, G01R 3102, G01R 120, H01F 1706

Patent

active

044568738

ABSTRACT:
A fault indicator for indicating the occurrence of a fault current in an electrical conductor includes a core assembly which attaches a circuit module to a monitored conductor and provides a concentrated magnetic flux indicative of the current level in the conductor. A magnetic reed switch in the circuit module responds to the magnetic flux in the core assembly to condition an indicator in a remote indicator module to a fault-indicating state in the event of a fault. To facilitate installation and removal of the circuit module from the conductor, the core assembly is formed by a plurality of laminations secured together and arranged in a generally rectangular configuration with their ends juxtaposed along one side thereof and joined with magnetically conductive interlocking coupling members. A spring spanning the remaining opposed sides of the core biases the coupling members into engagement and allows the structure to be fitted over conductors of various sizes, while maintaining a close operative association between the conductor and the magnetic reed switch in the circuit module.

REFERENCES:
patent: 2779927 (1957-01-01), Rudge
patent: 3434052 (1969-03-01), Fechant
patent: 3725832 (1973-04-01), Schweitzer, Jr.

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