Three phase undervoltage monitor

Details Three phase undervoltage monitor Three phase undervoltage monitor

1979-04-09

1980-12-09

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

307130, 340663, 361187, H02H 324

Patent

active

042388112

ABSTRACT:
A three phase undervoltage monitor separately converts the voltage on each phase to a D.C. voltage, compares each of the separate D.C. voltages with a reference voltage, and operates an output signal whenever one or more of the voltages drops below the reference voltage.

REFERENCES:
patent: 3112431 (1963-11-01), Pederson
patent: 3300689 (1967-01-01), Beddoes
patent: 3493816 (1970-02-01), Monigal et al.
patent: 4137557 (1979-01-01), Ciarniello et al.

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