Circuit breaker panel with wireless communications capability

• US 9,438,026 B2
• Filed: 01/30/2014
• Issued: 09/06/2016
• Est. Priority Date: 01/25/2010
• Status: Active Grant

• Current Assignee: Edison Global Circuits, LLC
• Original Assignee: Unilectric, LLC
• Inventors: Franks, Jeffrey L., Cole, Ray, Williams, Stephen E.
• Primary Examiner(s): Tran, Thienvu
• Assistant Examiner(s): Comber, Kevin J
• Application Number:
  US14/168,399
• Publication Number:
  US 20140146431A1
• Time in Patent Office: 950 Days
• Field of Search: 361/93.2
• US Class Current: 1/1
• CPC Class Codes: H01H 71/123 using a solid-state trip unit circuits H02H
• CPC Class Codes: H01H 71/74 Means for adjusting the conditions under which the device will function to provide protection
• CPC Class Codes: H02H 1/0015 Using arc detectors
• CPC Class Codes: H02H 1/0061 concerning transmission of signals transmission of measured quantities or switching orders; sectionalised protection involving signal transmission between at least two stations H02H7/261; comparison of the voltage or current values at two spaced portions of a single system H02H3/28; transferring the output of a sensing member to another variable G01D5/00; electrical measuring arrangements using modulation of electromagnetic waves, e.g. light beams G01R15/24, G01R15/26
• CPC Class Codes: H02H 3/006 Calibration or setting of parameters
• CPC Class Codes: H02H 3/04 with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned watching of pilot wires H02H1/0084; protection of protective arrangements H02H7/008; indication of the state of electronic switches H03K17/18
• CPC Class Codes: H02H 3/08 responsive to excess current responsive to abnormal temperature caused by excess current H02H5/04
• CPC Class Codes: H02H 3/10 additionally responsive to some other abnormal electrical conditions
• CPC Class Codes: H02H 3/105 responsive to excess current and fault current to earth
• CPC Class Codes: H02H 3/32 involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
• CPC Class Codes: H02H 7/263 involving transmissions of measured values comparison of currents or voltages using pilot wires H02H3/30

Abstract

In at least some embodiments, a system includes a plurality of circuit breakers and trip control logic external to and coupled to the circuit breakers. The trip control logic enables a plurality of different tripping options to be selected for each of the circuit breakers.

Claims

1. A circuit breaker system comprising:

a bus bar subsystem;

a plurality of circuit breakers, each circuit breaker including;

mechanical components and a solenoid for selectively breaking electrical continuity in an electrical path between a power source and corresponding line and neutral bus bars of the bus bar subsystem, the mechanical components adapted to connect to the corresponding line and neutral bus bars of the bus bar subsystem without wires;

sensor circuitry for monitoring the electrical path and detecting faults; and

logic circuitry coupled to the sensor circuitry for generating a fault detection signal identifying a type of fault detected by the sensor circuitry;

a first subsystem including;

trip control logic responsive to fault detection signals received from each of the plurality of circuit breakers, the trip control logic programmed to selectively activate the solenoid of a selected one of circuit breakers and independently break the continuity of the corresponding electrical path in response to a particular type of fault identified by a fault detection signal received from the selected circuit breaker; and

a communications interface; and

a second subsystem including;

a communications interface for exchanging signals with the communications interface of the first subsystem; and

wireless communications circuitry for establishing wireless communications with a system external to the circuit breaker system.

2. The circuit breaker system of claim 1, wherein the first and second subsystems are disposed on corresponding first and second circuit boards and the communications interfaces exchange serial data via the RS-232 protocol.

3. The circuit breaker system of claim 1, further comprising:

a bus bar subsystem;

a second plurality of circuit breakers, each of the second plurality of circuit breakers including;

mechanical components and a solenoid for selectively breaking electrical continuity in an electrical path between a power source and corresponding line and neutral bus bars of the bus bar subsystem, the mechanical components adapted to connect to the corresponding line and neutral bus bars of the bus bar subsystem without wires;

sensor circuitry for monitoring the electrical path and detecting faults; and

logic circuitry coupled to the sensor circuitry for generating a fault detection signal identifying a type of fault detected by the sensor circuitry;

a third subsystem including trip control logic responsive to fault detection signals received from each of the second plurality of circuit breakers, the trip control logic programmed to selectively activate the solenoid of a selected one of circuit breakers and independently break the continuity of the corresponding electrical path in response to a selected type of fault identified by a fault detection signal received from the selected circuit breaker; and

a communications interface for daisy-chaining the third subsystem with the first and second subsystems.

4. The circuit breaker system of claim 3, wherein the communications interface of the third subsystem supports serial communications with the second subsystem in accordance with the RS-485 protocol.

5. The circuit breaker system of claim 1, wherein the wireless communications circuitry of the second subsystem comprises a port for establishing wireless communications through a wide area network subsystem.

6. The circuit breaker system of claim 1, wherein the wireless communications circuitry comprises a WiFi subsystem for communicating with home area network devices.

7. The circuit breaker system of claim 1, wherein the wireless communications circuitry comprises a ZigBee subsystem for communicating with an electrical appliance.

8. The circuit breaker system of claim 1, wherein the first subsystem further comprises metering circuitry for collecting and formatting power consumption information for transmission by the wireless communications circuitry to a system external to the circuit breaker system.

9. The circuit breaker system of claim 1, wherein the wireless communications circuitry allows wireless programming of the trip control circuitry for selectively activating the solenoid of a selected one of circuit breakers and break the continuity of the corresponding electrical path in response to a selected type of fault.

10. The circuit breaker system of claim 1, wherein the trip control circuitry is programmable for selectively activating the solenoid of a selected one of circuit breakers and break the continuity of the corresponding electrical path in response to at least one of an overload fault condition, arc fault circuit interrupt, and ground fault interrupt.

11. A circuit breaker system comprising:

a plurality of circuit breakers, each circuit breaker including;

mechanical components and a solenoid for selectively breaking electrical continuity in an electrical path between a power source and line and neutral bus bars;

sensor circuitry for monitoring the electrical path and detecting faults; and

logic circuitry coupled to the sensor circuitry for generating a fault detection signal identifying a type of fault detected by the sensor circuitry;

a first subsystem including;

trip control logic responsive to fault detection signals received from each of the plurality of circuit breakers, the trip control logic programmed to selectively activate the solenoid of a selected one of circuit breakers and break the continuity of the corresponding electrical path in response to a particular type of fault identified by a fault detection signal received from the selected circuit breaker; and

a communications interface; and

a second subsystem including;

a communications interface for exchanging signals with the communications interface of the first subsystem; and

wireless communications circuitry for establishing wireless communications with a system external to the circuit breaker system, wherein the mechanical components of each of the plurality of circuit breakers are manually resettable and the trip control logic is further operable to;

prevent reset of the selected circuit breaker by continuously activating the solenoid of the selected circuit breaker in response to a signal received by the wireless communications circuitry.

12. A circuit breaker system comprising:

a bus bar subsystem;

a plurality of circuit breakers for selectively breaking electrical continuity in a corresponding plurality of electrical paths transmitting electrical power from a power source to a corresponding line bus bar of the bus bar subsystem, each circuit breaker including independent circuitry for detecting faults on a corresponding electrical path and in response generating a fault detection signal representing a type of fault detected;

trip control logic operable to independently trip each of the circuit breakers to cause a break in the continuity of the corresponding electrical path in response to a fault detection signal representing a fault type of a particular set of fault types predetermined for the circuit breaker; and

wireless communications circuitry for receiving signals for selecting the particular set of fault types for each of the circuit breakers.

13. The circuit breaker system of claim 12, wherein the trip control logic is disposed on a first circuit board and the wireless communications circuitry is disposed on a second circuit board communicating with the first circuit board through a serial interface.

14. The circuit breaker system of claim 12, wherein the trip control logic is disposed on a first circuit board daisy-chained with a like second circuit board through a first serial interface and to a third circuit board on which the wireless communications circuitry is disposed through a second serial interface.

15. The circuit breaker system of claim 14, wherein the first serial interface is an RS-485 interface and the second serial interface comprises an RS-232 interface.

16. The circuit breaker system of claim 12, further comprises metering circuitry for collecting and formatting power consumption information for transmission by the wireless communications circuitry to a system external to the circuit breaker system.

17. The circuit breaker system of claim 12, wherein particular set of fault types includes at least one fault type selected from the group consisting of an overload fault condition, an arc fault circuit interrupt, and a ground fault interrupt.

18. The circuit breaker system of claim 12, wherein each of the plurality of breakers is coupled to the corresponding line bus bar of the bus bar subsystem without wires.