Rate of current rise sensitive slot motor and switching apparatu

Details Rate of current rise sensitive slot motor and switching apparatu Rate of current rise sensitive slot motor and switching apparatu

1996-05-20

1997-12-02

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335195, 218 22, H01H 7500

Patent

active

056940980

ABSTRACT:
A thick solid steel slot motor is disposed adjacent a movable conductor to apply a contact closing force on the conductor, augmenting the contact pressure spring, under steady state current conditions, and to reduce the force under high rate of current rise conditions to enhance dynamic separation of the movable conductor from a stationary conductor, reducing the strength requirement of the contact pressure spring.

REFERENCES:
patent: 4470027 (1984-09-01), Link et al.
patent: 4608545 (1986-08-01), Kralik
patent: 5301083 (1994-04-01), Grass et al.

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