Testing and monitoring of an electrical connection

• US 10,374,369 B2
• Filed: 12/23/2015
• Issued: 08/06/2019
• Est. Priority Date: 12/23/2014
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Inventors: Eldridge, David Austin, Mueller, Maximilian Abel, Thompson, Ronald Lee, Luebke, Charles John
• Primary Examiner(s): Astacio-Oquendo, Giovanni
• Application Number:
  US14/757,614
• Publication Number:
  US 20160178682A1
• Time in Patent Office: 1,322 Days
• Field of Search: 324333, 324334, 324338, 324339, 324346
• CPC Class Codes: G01R 31/088 Aspects of digital computing
• CPC Class Codes: G01R 31/69 of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
• CPC Class Codes: H01R 13/665 with built-in electronic circuit H01R13/70, H01R13/719 take precedence
• CPC Class Codes: H01R 13/713 the switch being a safety switch
• CPC Class Codes: H02H 11/00 Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
• CPC Class Codes: H02H 3/17 by means of an auxiliary voltage injected into the installation to be protected using summation current transformers H02H3/33
• CPC Class Codes: H02H 3/33 using summation current transformers H02H3/347 takes precedence

Abstract

A system and method for testing of electrical connections, conductors, and loads prior to energizing those connections is disclosed. For example, an interlocking socket can comprise a receptacle designed to be coupled to a connector of a load. The interlocking socket can comprise a microprocessor coupled to the receptacle, the microcontroller operable for testing one or more faults in the connector, a conductor, or the load coupled to the connector. In another example, a microprocessor can be coupled to a switch comprising a conductor, where the microprocessor is operable for testing one or more faults in the conductor or a load coupled to the conductor.

Claims

1. An interlocking socket for coupling to a connector of a load, the interlocking socket comprising:

a receptacle configured to receive the connector;

a microcontroller coupled to the receptacle, the microcontroller operable for testing for one or more faults in the connector, a conductor coupling the load and the connector, or the load;

a breaker coupled to the receptacle and the microcontroller; and

a signal transformer coupled on a first side of the interlocking socket at a power cord conductor and coupled to a second side of the interlocking socket at a line conductor, wherein the breaker is located between the first side and the second side of the interlocking socket.

2. The interlocking socket of claim 1, wherein the one or more faults include a bolted fault, a ground fault, one or more open phases, and an electrical arcing condition.

3. The interlocking socket of claim 1, wherein the breaker is coupled to the receptacle and the microcontroller, wherein the microcontroller is further operable for preventing power from being delivered from the breaker to the connector when a result of the testing performed indicates an unsafe condition.

4. The interlocking socket of claim 1, wherein the microcontroller is operable for testing one or more of:

a ground fault circuit interrupter within the breaker;

that the connector is grounded;

a temperature within the receptacle; and

that the connector is completely inserted into the receptacle.

5. The interlocking socket of claim 1, wherein the microcontroller is mounted in one of the following positions:

to the exterior of the breaker, within the breaker, within an enclosure surrounding the interlocking socket, or to the exterior of the enclosure.

6. The interlocking socket of claim 1, further comprising an indicator of a result of the testing performed by the microcontroller, the indicator being visual, audible, or both visual and audible.

7. The interlocking socket of claim 1, further comprising a power line communication module for transmitting a result of the testing performed by the microcontroller to a remote computer system, the power line communication module comprising the signal transformer and a pair of capacitors.

8. The interlocking socket of claim 1, wherein the microcontroller is further operable for:

monitoring the breaker, the connector, the conductor, and the load after the breaker is closed; and

opening the breaker if a fault is detected, the fault being one or more of a bolted fault, a ground fault, one or more open phases, and an electrical arcing condition.

9. The interlocking socket of claim 1, wherein the microcontroller performs the following steps:

measuring an amount of energy consumed by the load during a time period; and

transmitting the measured amount of energy consumed to a remote computer system that comprises a billing system.

10. A switching device for coupling to a load, the switching device comprising:

a line conductor;

a power cord conductor;

a breaker disposed between the line conductor and the power cord conductor;

a microcontroller coupled to the breaker and the power cord conductor, the microcontroller operable for testing for one or more faults in the power cord conductor or the load coupled to the power cord conductor; and

a power line communication module comprising a signal transformer, the signal transformer coupled on a first side of the switching device to the power cord conductor and coupled on a second side of the switching device to the line conductor, the signal transformer for transmitting communication signals between the load and a remote device.

11. The switching device of claim 10, wherein the one or more faults include a bolted fault, a ground fault, one or more open phases, and an electrical arcing condition.

12. The switching device of claim 10, wherein the microcontroller is mounted in one of the following positions:

to the exterior of the switching device, within an enclosure surrounding the switching device, or to the exterior of the enclosure.

13. The switching device of claim 10, further comprising an indicator of a result of the testing performed by the microcontroller, the indicator being visual, audible, or both visual and audible.

14. An indicator device for coupling to a load, the indicator device comprising:

a line conductor;

a power cord conductor;

a breaker disposed between the line conductor and the power cord conductor;

a microcontroller coupled to the breaker and the power cord conductor, the microcontroller operable for testing for one or more faults in the power cord conductor or the load coupled to the power cord conductor;

a power line communication module comprising a signal transformer, the signal transformer coupled on a first side of the indicator device to the power cord conductor and coupled on a second side of the indicator device to the line conductor, the signal transformer for transmitting communication signals between the load and a remote device; and

an indicator for providing a result of the testing performed by the microcontroller, the indicator being visual, audible, or both visual and audible.

15. The indicator device of claim 14, wherein the one or more faults include a bolted fault, a ground fault, one or more open phases, and an electrical arcing condition.

16. The indicator device of claim 14, wherein the microcontroller is mounted in one of the following positions:

to the exterior of the indicator device, within an enclosure surrounding the indicator device, or to the exterior of the enclosure.

17. The indicator device of claim 14, wherein the power line communication module further comprises a second signal transformer and a transceiver disposed between the signal transformer and the second signal transformer.