Breaker measurement structure for power distribution unit

Patent metadata

Field	Value
Publication number	US-11408939-B2
Application number	US-202016987622-A
Country	US
Kind code	B2
Filing date	Aug 7, 2020
Priority date	Jan 31, 2018
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

A power distribution unit includes a circuit protection device having output terminals and a current transformer board connected to the output terminals of the circuit protection device. The power distribution unit further includes a signal board connected to the current transformer board and a measurement board connected to the signal board.

First claim

What is claimed is:

1. An integrated printed circuit board assembly system of a power distribution unit, the integrated printed circuit board assembly system comprising:
a plurality of current transformer boards, each current transformer board being configured to connect to a circuit protection device;
a measurement board configured to measure at least one voltage and at least one current;
a connecting device connected to each of the plurality of current transformer boards and connected to the measurement board,
wherein the connecting device receives at least one voltage signal and at least one current signal from each of the plurality of current transformer boards, and
wherein the connecting device distributes the at least one voltage signal and the at least one current signal to the measurement board; and
a housing covering the plurality of current transformer boards, the measurement board, and the connecting device.

2. The integrated printed circuit board assembly system of claim 1 , wherein the connecting device is a plurality of wires.

3. The integrated printed circuit board assembly system of claim 1 , wherein the connecting device is a signal board having a first side and a second side, the first side having a plurality of connectors.

4. The integrated printed circuit board assembly system of claim 3 , wherein the second side of the signal board has no traces or components.

5. The integrated printed circuit board assembly system of claim 1 , wherein the plurality of current transformer boards includes at least a first current transformer board, a second current transformer board, and a third current transformer board.

6. The integrated printed circuit board assembly of claim 1 , further comprising an input board connected to a second measurement board, wherein the input board provides an input voltage and current signal to the second measurement board.

7. The integrated printed circuit board assembly system of claim 6 , wherein the input board accepts one of a three-phase wye voltage input, a three-phase delta voltage input, and a single-phase voltage input.

8. The integrated printed circuit board assembly system of claim 6 , wherein the input board includes metal oxide varistors.

9. A method of assembling a power distribution unit, the method comprising:
providing an input board;
providing a circuit protection device having output terminals;
providing a current transformer board;
connecting the current transformer board to the output terminals of the circuit protection device;
providing a connecting device;
connecting the connecting device to the current transformer board;
providing at least two measurement boards, including a first measurement board and a second measurement board;
connecting each of the at least two measurement boards to the connecting device;
connecting the first measurement board to the input board;
connecting the second measurement board to the circuit protection device; and
covering the input board, the circuit protection device, the current transformer board, the connecting device, and the at least two measurement boards within the same housing.

10. The method of claim 9 , wherein the step of connecting the current transformer board to the output terminals of the circuit protection device includes connecting voltage sense terminals of the circuit protection device to the output terminals of the circuit protection device.

11. The method of claim 9 , wherein the connecting device is a plurality of wires.

12. The method of claim 9 , wherein the connecting device is a signal board.

13. The method of claim 9 , wherein the step of providing the input board includes selecting an input board from the group consisting of a three-phase wye input board, a three-phase delta input board, and a single-phase input board.

14. The method of claim 9 , wherein the step of providing the circuit protection device includes providing at least a first circuit protection device, a second circuit protection device, and a third circuit protection device, and wherein the measurement board is configured to measure at least one of a voltage and a current from each of the first circuit protection device, the second circuit protection device, and the third circuit protection device.

15. The method of claim 14 , wherein the step of providing the circuit protection device further includes providing at least a fourth circuit protection device, a fifth circuit protection device, and a sixth circuit protection device, and wherein the step of providing a measurement board includes providing a first measurement board configured to measure at least one of the voltage and the current from each of the first circuit protection device, the second circuit protection device, and the third circuit protection device, and providing a second measurement board configured to measure at least one of the voltage and the current from each of the fourth circuit protection device, the fifth circuit protection device, and the sixth circuit protection device.

16. A power distribution unit comprising:
a circuit protection device having output terminals;
a current transformer board connected to the output terminals of the circuit protection device, the current transformer board providing a secondary output that is proportional to an output of the circuit protection device;
a connecting device connected to the current transformer board;
a measurement board connected to the connecting device, the connecting device collecting the secondary output from the current transformer board and distributing the secondary output to the measurement board; and
a housing covering the circuit protection device, the current transformer board, the connecting device, and the measurement board.

17. The power distribution unit of claim 16 , wherein the secondary output is a secondary current.

18. The power distribution unit of claim 16 , wherein the connecting device is a plurality of wires.

19. The power distribution unit of claim 16 , wherein the connecting device is a busbar.

20. The power distribution unit of claim 16 , wherein the connecting device receives at least one voltage signal and at least one current signal from the current transformer board, and wherein the measurement board is configured to measure the at least one voltage signal and the at least one current signal.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Smith Josiah Daniel
• Chen George
• Le Long Larry

Classifications

• H05K7/1492 Primary

  having electrical distribution arrangements, e.g. power supply or data communications · CPC title

• G01R31/3275

  Fault detection or status indication · CPC title

• H02H7/222

  for switches · CPC title

• H01H73/06

  Housings; Casings; Bases; Mountings · CPC title

• H02H1/0007

  concerning the detecting means (in general G01R or other subclasses of G01; reed switches H01H71/2445) · CPC title