Fault indicator including a reed relay responsive to above norma

Details Fault indicator including a reed relay responsive to above norma Fault indicator including a reed relay responsive to above norma

1977-06-13

1978-07-18

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324133, 340664, G01R 3102, G01R 1916

Patent

active

041018265

ABSTRACT:
A fault indicator includes a reed relay disposed for responding to a magnetic field surrounding a conductor particularly when conducting above-normal current. The relay triggers a latch which enables a counter and starts a pulse generator which, in turn, drives a flasher, and the pulses are counted for resetting the device by resetting the latch after a number of pulses have been counted. The reed relay is disposed in a position for adjustment of alignment and misalignment in relation to the conductor.

REFERENCES:
patent: 2651021 (1953-09-01), Hays
patent: 3524133 (1970-08-01), Arndt
patent: 3771049 (1973-11-01), Piccione
patent: 3944921 (1976-03-01), Tsuda et al.
patent: 4034360 (1977-07-01), Schweitzer

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