Inventor

ENGEL JOSEPH C

86 patents

⚠️ This page may combine multiple inventors who share the name “ENGEL JOSEPH C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ENGEL JOSEPH C

EATON CORP

Low cost apparatus for detecting arcing faults and circuit breaker incorporating same

Arc fault detection apparatus, method and system for an underground electrical conductor

Ground fault/arc fault circuit interrupter and method of testing the same with a test button and a reset button

Digitally controlled circuit interrupter with improved automatic selection of sampling interval for 50 Hz and 60 Hz power systems

Energy monitoring system for a plurality of local stations with snapshot polling from a central station

Arc fault detector and method for locating an arc fault

Self-powered power bus sensor employing wireless communication

Electrical switching apparatus including glowing contact protection

Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault

Apparatus for detecting and responding to series arcs in AC electrical systems

Apparatus providing protection and metering in an ac electrical system utilizing a multi-function sampling technique

Circuit interrupter providing protection and waveform capture for harmonic analysis

Ground fault circuit interrupter with immunity to wide band noise

Panelboard for controlling and monitoring power or energy

Circuit breaker - associated backpack unit for lower-link communication with a PC computer monitoring system and energy monitoring system using a plurality of such backpack units

Electrical switches with current protection interfaced with a remote station and a portable local unit

Test apparatus for power circuits of an electrical distribution device

Thermal modeling of overcurrent trip during power loss

Wireless system for one or more electrical switching apparatus

Self-powered power bus sensor employing wireless communication

Low cost apparatus for detecting arcing faults and circuit breaker incorporating same

Overcurrent protection device

Motor starter with dual-slope integrator

Apparatus for digitizing ac signals of unknown or changing frequency

Electrical switching apparatus with digital trip unit and automatic frequency selection

WESTINGHOUSE ELECTRIC CORP

Electronic circuit breaker with protection against sputtering arc faults and ground faults

Energy monitoring system for a plurality of local stations with snapshot polling from a central station

Sure chip plus

Automatic transfer switch for a wide range of source voltage

Automatic transfer switch with delay

Circuit interrupter with multiple display and parameter entry means

Circuit interrupter with energy management functions

Energy-conserving illumination system

Process for auto calibration of a microprocessor based overcurrent protective device and apparatus

Integral capacitive divider bus bar voltage measuring apparatus and combined current sensor

Circuit interrupter with digital trip unit and automatic reset

Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core

Automatic transfer switch with programmable display

Circuit interrupter with front panel numeric display

Circuit interrupter with digital trip unit and optically-coupled data input/output system

Circuit interrupter with digital trip unit and power supply

Ground fault circuit interrupter with grounded neutral protection

Ballast circuit for accurately regulating HID lamp wattage

High pressure discharge lamp dimming circuit utilizing variable duty-cycle photocoupler

Programmed overcurrent protection control apparatus and method of operating the same

Bidirectional bus coupler presenting peak impedance at carrier frequency

Circuit interrupter with digital trip unit and means to enter trip settings

Circuit interrupter with digital trip unit and potentiometers for parameter entry

ASEA BROWN BOVERI INC

Light driven remote system and power supply therefor

ABB POWER T & D CO

Method and apparatus for rapidly analyzing AC waveforms containing DC offsets