General Electric Company

Ronald M Reckard

Tam Nguyen

Radhakrishna Ranjan

Ralph H Hartley

This sectionalizer comprises a movable current-carrying member carrying a first contact that is engageable with a second contact when the sectionalizer is closed. Overcenter toggle means holds the current-carrying member in its closed position when the toggle means is in an overcenter condition but is ineffective to hold the current-carrying member in said closed position when the toggle means is driven out of its overcenter condition. Electronic control means develops a pulse of electrical energy when predetermined conditions have occurred in the circuit through the sectionalizer. A resettable actuator for said overcenter toggle means comprises operating spring means, permanent magnet means for holding the operating spring means in a charged condition, and electromagnetic means effective when energized by said pulse of electric energy for reducing the holding force provided by the permanent magnet means sufficiently to allow the operating spring means to discharge and drive the overcenter toggle means out of its overcenter condition, thus allowing the current-carrying member to move toward open condition.

Electronic line sectionalizer with resettable actuator

The arrester includes a plurality of gap units and nonlinear resistance valve units connected in series between the line voltage and ground. A series line of capacitors across the gap units provides capacitive grading for fast high frequency impulses. A series line of resistors across the gap units provides resistive grading for slow, low frequency impulses. The gap units comprise control gap units for controlling the initial sparkover of the arrester and cascade gap units. The control gap units all have substantially equal sparkover voltages for slow impulses. The improvement comrises that there is connected across at least one of the control gap units and in series with the series line of capacitors, a linear upset resistor having a resistance chosen so that the time constant of the resistor and capacitive grading line is about 0.25 microseconds.

Growing community of inventors

Taylorsville, NC, United States of America

Ronald M Reckard