Failed fuse detector and detecting method for rotating electrica

Details Failed fuse detector and detecting method for rotating electrica Failed fuse detector and detecting method for rotating electrica

1980-10-16

1987-01-06

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

310 68D, 340639, 363 53, G08B 2100

Patent

active

046350446

ABSTRACT:
A method and an arrangement of apparatus is provided for remotely detecting the existence of a failed fuse of a brushless exciter rotor's rotating rectifier assembly. A conducting fuse produces a magnetic field which is sensed by elements on a stationary structure. A signal corresponding to the conducting status of each fuse is synchronized to the rotational speed of the brushless exciter rotor by means of a preselected oscillator frequency and the status of each individual fuse is retained and displayed until the next inspection of that fuse. Alarm circuitry enables automatic detection of a failed fuse and shutdown in the event of multiple fuse failures. Since this method looks for the instance of current through each fuse, it operates in a fail-safe manner.

REFERENCES:
patent: 3030531 (1962-04-01), Lessmann
patent: 3866196 (1975-02-01), Mann et al.

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