Test point mounted voltage monitoring system

Details Test point mounted voltage monitoring system Test point mounted voltage monitoring system

G - Physics

01

R

324/59

G01R 19/14 (2006.01) G01R 19/155 (2006.01)

Patent

CA 1239994

TEST POINT MOUNTED VOLTAGE MONITORING SYSTEM Edmund O. Schweitzer, Jr. Abstract of the Disclosure A voltage monitoring system for mounting on a test point in an AC power distribution system provides an output when the voltage level on a conductor is above a predetermined minimum level. Within a sensing unit mounted on the test point a rectifier circuit develops from a capacitive coupling to the monitored conductor a voltage dependent on the voltage level of the conductor. A potentiometer applies a portion of the voltage to the gate of a MOSFET transistor, which actuates a reed-contact relay to control external switching circuitry, The potentiometer is user-adjustable from the front of the sensing unit to enable the minimum threshold level to be set.

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