Current sensing device and monitor

Details Current sensing device and monitor Current sensing device and monitor

1982-09-29

1985-12-10

Ruehl, Charles A.

Communications: electrical

Condition responsive indicating system

Specific condition

324127, 324133, 340662, 340663, 340664, 361 31, 361 94, G08B 2100

Patent

active

045583102

ABSTRACT:
A system senses alternating current in a conductor, such as a main line supplying electrical power to a home, and responds to the sensed current as by providing a warning signal when the sensed current exceeds or is less than a preset value for a predetermined short period of time. The current sensor itself is a simple coil of wire, either with an air core or a partial ferromagnetic core, which can be easily operatively associated with the current carrying conductor without the need for disconnecting the conductor from its terminals and which when installed does not present the hazards associated with current transformers.

REFERENCES:
patent: 3462756 (1969-08-01), Mills
patent: 3624504 (1971-11-01), Joly
patent: 3654515 (1972-04-01), Kato et al.
patent: 4037155 (1977-07-01), Ahmed
patent: 4240072 (1980-12-01), Fowler
patent: 4286213 (1981-08-01), Fowler
patent: 4286751 (1981-09-01), Fowler
patent: 4328482 (1982-05-01), Belcher et al.
patent: 4454557 (1984-06-01), Hurley

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