Systems and methods for locating a circuit

• US 9,702,920 B2
• Filed: 10/04/2013
• Issued: 07/11/2017
• Est. Priority Date: 02/18/2004
• Status: Active Grant

• Current Assignee: Tasco Incorporated
• Original Assignee: Tasco Incorporated
• Inventors: McCasland, Steven Thomas
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US14/046,675
• Publication Number:
  US 20140167729A1
• Time in Patent Office: 1,376 Days
• Field of Search: 340635, 340654, 340656, 340657, 340661, 340664, 340538, 34031016, 340292, 340638, 324 66, 324 67, 324 76, 324 77, 324110, 324142, 324508, 324509, 324529, 324528
• CPC Class Codes: G01R 15/18 using inductive devices, e.g. transformers
• CPC Class Codes: G01R 31/58 Testing of lines, cables or conductors testing of electric windings G01R31/72
• CPC Class Codes: G01R 31/66 Testing of connections, e.g. of plugs or non-disconnectable joints testing for incorrect line connections G01R31/55
• CPC Class Codes: G01R 31/67 Testing the correctness of wire connections in electric apparatus or circuits

Abstract

Systems and methods presented herein are generally directed to the location and/or identification of a circuit within a circuital system. In one embodiment, a transmitter is configured for inducing signals upon a plurality of circuit lines (e.g., power lines, communication lines, lighting circuits, etc.) with each circuit line having a unique signal to identify it from other circuit lines. Each signal may be induced upon an individual circuit line by means of a inductive coupling clip coupled about the circuit line. The transmitter may be used at a distribution point of the circuit lines, such as circuit breaker box. A receiver can then receive a signal from a distal point on the circuit line to acquire the unique signal induced thereon and identify determine which inductive coupling clip is coupled thereto. For example, the signal may be decoded to display a number of the circuit line being tested.

Claims

1. A circuit tracing apparatus, comprising:

a) a signal generating test apparatus having at least two outputs adapted and configured for connection, respectively, to at least two different branch circuits of an electrical power distribution network simultaneously, each of said at least two outputs comprising a uniquely identifiable signal; and

b) a signal receiving apparatus adapted and configured for connection to one of said at least two different branch circuits of said electrical power distribution network, said signal receiving apparatus comprising means for identifying at least one of said uniquely identifiable signals, and a display for indicating which of said at least two outputs is associated therewith.

2. The circuit tracing apparatus as recited in claim 1, wherein said uniquely identifiable signal comprises at least one signal type from the group:

digital signal, and analog signal.

3. The circuit tracing apparatus as recited in claim 1, wherein said at least two different branch circuits of an electrical power distribution network comprise de energized branch circuits.

4. The circuit tracing apparatus as recited in claim 3, wherein said at least one of said signal generating test apparatus and said signal receiving apparatus comprises a safety circuit adapted and configured to protect said at least one of said signal generating test apparatus and said signal receiving apparatus if any of said at least two different branch circuits of an electrical power distribution network become energized.

5. The circuit tracing apparatus as recited in claim 1, wherein said at least two different branch circuits of an electrical power distribution network comprise energized branch circuits.

6. The circuit tracing apparatus as recited in claim 5, wherein said signal generating test apparatus and said signal receiving apparatus comprise means for communicating with each other utilizing carrier current communications.

7. A method of tracing an electrical network, the steps comprising:

a) providing a multioutput, signal generating electrical test apparatus configured to provide a uniquely identifiable electrical signal simultaneously at each output thereof;

b) providing a readout device compatible with said multi-output, signal generating electrical test apparatus;

c) de energizing all branch circuits to be tested in an electrical power distribution network to create at least one deenergized branch circuit;

d) connecting an output of said multi-output, signal generating electrical test apparatus to each of said at least one de energized branch circuit; and

e) connecting said readout device to an electrical outlet connected to said at least one de energized circuit.

8. The method of tracing an electrical network as recited in claim 7, the steps further comprising:

f) reading an indication from said readout device indicating which of said multiple outputs of said multi-output, signal generating electrical test apparatus is connected to the one of said at least two de energized circuits connected to said electrical outlet.

9. The method of tracing an electrical network as recited in claim 8, wherein said providing step (b) comprises providing a readout device comprising a digital readout.

10. The method of tracing an electrical network as recited in claim 7, wherein said providing step (a) comprises providing a multi-output, signal generating electrical test apparatus having at least four outputs and configured to provide a uniquely identifiable electrical signal at each of said at least four outputs.

11. The method of tracing an electrical network as recited in claim 7, wherein said providing step (a) comprises providing a multi-output, signal generating electrical test apparatus having at least eight outputs and configured to provide a uniquely identifiable electrical signal at each of said at least eight outputs.

12. A circuit tracing apparatus, comprising:

a) a signal generating test apparatus having at least two outputs adapted and configured for coupling, respectively, to at least two different branch circuits of an electrical power distribution network concurrently, each of said at least two outputs comprising a uniquely identifiable signal; and

b) a signal receiving apparatus adapted and configured for coupling with one of said at least two different branch circuits of said electrical power distribution network, said signal receiving apparatus comprising means for identifying at least one of said uniquely identifiable signals.

13. The circuit tracing apparatus as recited in claim 12, wherein said uniquely identifiable signal comprises at least one signal type from the group:

digital signal, and analog signal.

14. The circuit tracing apparatus as recited in claim 12, wherein said at least two different branch circuits of an electrical power distribution network comprise de energized branch circuits.

15. The circuit tracing apparatus as recited in claim 14, wherein said at least one of said signal generating test apparatus and said signal receiving apparatus comprises a safety circuit adapted and configured to protect said at least one of said signal generating test apparatus and said signal receiving apparatus.

16. The circuit tracing apparatus as recited in claim 12, wherein said at least two different branch circuits of an electrical power distribution network comprise energized branch circuits.

17. The circuit tracing apparatus as recited in claim 16, wherein said signal generating test apparatus and said signal receiving apparatus comprise means for communicating with each other utilizing carrier current communications.

18. A method of tracing an electrical network, the steps comprising:

a) providing a multioutput, signal generating electrical test apparatus configured to provide a uniquely identifiable electrical signal concurrently at each output thereof;

b) providing a readout device compatible with said multi-output, signal generating electrical test apparatus;

c) selecting at least one branch circuit to be tested in an electrical power distribution network;

d) coupling said multi-output, signal generating electrical test apparatus to each of at least one branch circuit of an electrical power distribution network; and

e) coupling said readout device to an electrical outlet connected to said at least one branch circuit.

19. The method of tracing an electrical network as recited in claim 18, the steps further comprising:

f) reading an indication from said readout device indicating which of said multiple outputs of said multi-output, signal generating electrical test apparatus is electrically connected to said electrical outlet.

20. The method of tracing an electrical network as recited in claim 19, wherein said providing step (b) comprises providing a readout device comprising a digital readout.

21. The method of tracing an electrical network as recited in claim 18, wherein said providing step (a) comprises providing a multi-output, signal generating electrical test apparatus having at least four outputs and configured to provide a uniquely identifiable electrical signal at each of said at least four outputs.

22. The method of tracing an electrical network as recited in claim 18, wherein said providing step (a) comprises providing a multi-output, signal generating electrical test apparatus having at least eight outputs and configured to provide a uniquely identifiable electrical signal at each of said at least eight outputs.