1
Allan A Dudash, Waymon A Melvin Jr, Leonard C Vercellotti: Distribution network communication system having branch connected repeaters. Westinghouse Electric, R W Smith, February 10, 1981: US04250489 (300 worldwide citation)

Bidirectional addressable repeaters of a power line carrier communication system each include an address recognition and a receive and transmit control logic circuit having programmable zone and address identifying states for connection in plural repeating levels defining branch paths linking a cent ...


2
Paul M Johnston, Andras I Szabo: Digital processing and calculating AC electric energy metering system. Westinghouse Electric Corporation, R W Smith, February 28, 1978: US04077061 (116 worldwide citation)

A metering system for electric utility power line measurements includes voltage and current signal inputs that are randomly sampled and converted to binary representations. A system sequence controller and calculator provides programmed control for processing digital control and data signals and for ...


3
Leonard C Vercellotti, Ian A Whyte: Power line carrier communication system for signaling customer locations through ground wire conductors. Westinghouse Electric Corporation, R W Smith, April 5, 1977: US04016429 (94 worldwide citation)

Carrier current signals are impressed to and detected from grounding conductors connected to the power system and to real earth ground. The communication links provided by the grounded neutral conductors of the power system and by the real earth ground return path transmit the carrier communication ...


4
Ian A Whyte: Power supply for power line carrier communication systems. Westinghouse Electric Corporation, R W Smith, January 18, 1977: US04004110 (88 worldwide citation)

Apparatus for powering a signal amplifier or repeater connected to the primary or high-voltage portion of a power distribution system. Oscillator and amplifier circuits are energized by power from the secondary or low-voltage portion of the power distribution system. The oscillator and amplifier cir ...


5
Ian A Whyte: Distribution power line communication system including a messenger wire communications link. Westinghouse Electric Corporation, R W Smith, March 15, 1977: US04012733 (86 worldwide citation)

A distribution power line communication system wherein communication signals are transferred between a communication terminal at a substation and communication terminals at customer locations. The communication signals are transferred between the terminals by using a two-conductor line, with one of ...


6
Stephen M Pai: Load management terminal having plural selectable address formats for a power line communication system. Westinghouse Electric, R W Smith, December 19, 1978: US04130874 (76 worldwide citation)

A load management terminal for each of remote electric utility customer locations included in a power line communication system is addressable by alternate codes. A combined unique, selected block and universal block address recognition circuit is alternately responsive to received data addressed to ...


7
Ian A Whyte, Richard F Cook: Multichannel radio communication system for automated power line distribution networks. Westinghouse Electric, R W Smith, April 22, 1980: US04199761 (64 worldwide citation)

An automated electric power distribution network includes a radio communication system for transmitting multipurpose, multitone signals in one or more signaling channels over the auxiliary channel or channels of one or more commercial broadcast stations. Energy management terminals receive the signa ...


8
Joachim E Wolf, Philip F Locke Jr: Current sensing transducer for power line current measurements. Westinghouse Electric, R W Smith, January 8, 1980: US04182982 (51 worldwide citation)

A current sensing transducer includes a conductive current divider including a branch path for conducting a fractional current proportional to a current to be sensed and being applied through the divider. A compensated transformer includes a primary circuit responsive to the fractional current and t ...


9
James S Britton: Protective load disconnect unit for remote load control systems. Westinghouse Electric, R W Smith, June 3, 1980: US04206443 (45 worldwide citation)

A protective load disconnect unit is remotely controlled at a single control input terminal from a master controller and monitoring unit. A power switching circuit is actuated to switch a load to be controlled from on to off by a control signal from the master unit. The input terminal is maintained ...


10
Paul W Martincic: Encapsulated current transformer. Westinghouse Electric, R W Smith, April 22, 1980: US04199743 (44 worldwide citation)

A current transformer encapsulated in an injection molded layer of insulating material. The current transformer includes a secondary winding which is disposed around a winding spool having side flanges thereon. Permanent spacers extend across the length of the winding spool and rest on the side flan ...