Method for checking insulative condition of insulated windings u

Details Method for checking insulative condition of insulated windings u Method for checking insulative condition of insulated windings u

1983-03-21

1985-03-05

Birmiel, Howard A.

Measuring and testing

Vibration

Hardness or compliance

73574, 73579, 73588, G01H 106, G01M 700

Patent

active

045023298

ABSTRACT:
The disclosure describes a method for checking an insulative condition of an insulated winding used in an electrical appliance comprising applying an external mechanical force to said insulated winding to give vibrating frequency to the same for its examination; detecting the frequency behavior to be generated in said insulated winding in the form of electrical signal outputs; and electrically processing the signals for judging deterioration occurred in said insulated winding.

REFERENCES:
patent: 3345861 (1967-10-01), Heath
patent: 3580056 (1971-05-01), Warner
patent: 3771356 (1973-11-01), Mitchell
patent: 4128011 (1978-12-01), Savage
patent: 4261206 (1981-04-01), Futakawa
patent: 4281547 (1981-08-01), Hinshaw et al.
patent: 4342229 (1982-08-01), Massa
patent: 4400980 (1983-08-01), Lepert

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