Armature operation-release testing apparatus

Details Armature operation-release testing apparatus Armature operation-release testing apparatus

1976-07-13

1977-12-06

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3102

Patent

active

040619648

ABSTRACT:
An armature operation-release testing apparatus for an electromagnetic relay of the type in which an armature is adapted to move toward and away from a core in a direction different from the direction of movement of a movable contact. The test for the operating characteristic of the electromagnetic relay is carried out by supplying an operating current to the electromagnetic coil of the relay to attract the armature to the core, positioning an externally controlled sensor to a test position slightly displaced toward the armature beyond the armature attracting surface of the core, and detecting electrical engagement between the sensor and the armature. The test for the releasing characteristic of the relay is then carried out by supplying a releasing current to the coil in lieu of the operating current, positioning the sensor at the test position again, and detecting electrical engagement between the sensor and the armature.

REFERENCES:
patent: 3345522 (1967-10-01), Reuther

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