Surge arrester protection system and method

• US 6,018,453 A
• Filed: 06/18/1998
• Issued: 01/25/2000
• Est. Priority Date: 06/18/1998
• Status: Expired due to Term

• Current Assignee: Cooper Industries, Inc. (Eaton Corporation PLC.)
• Original Assignee: Cooper Industries, Inc. (Eaton Corporation PLC.)
• Inventors: Daharsh, Ross Stuart, Goedde, Gary Lee
• Primary Examiner(s): Jackson, Stephen W.
• Application Number:
  US09/099,305
• Time in Patent Office: 586 Days
• Field of Search: 361/56, 361/91, 361/111, 361/115, 361/117, 361/127, 361/129
• US Class Current: 361/117
• CPC Class Codes: H01C 7/12 Overvoltage protection resistors series resistors structurally associated with spark gaps H01T1/16
• CPC Class Codes: H01T 4/04 Housings H01T4/06 takes precedence

Abstract

A surge arrester protection system includes a surge arrester, a first mechanism fixed on a first end of the surge arrester for directing arcs around the surge arrester and a second mechanism fixed on a second end of the surge arrester for directing arcs around the surge arrester. The first and second mechanisms each include a plurality of slots extending substantially radially therein. Additionally, a cap which covers a lower end of the arrester is used to catch material dripping from the surge arrester and a cap covering an upper end of the arrester is used to protect the arrester from animals and the elements.

Claims

1. A surge arrester protection system comprising:

a surge arrester;

a first plate fixed on a first end of said surge arrester;

a second plate fixed on a second end of said surge arrester;

wherein at least one of said first and second plates includes a plurality of slots extending substantially radially therein.

2. The system of claim 1, wherein the slots extend completely through the plates.

3. The system of claim 1 further comprising:

a first cap covering said first plate; and

a second cap covering said second plate.

4. The system of claim 3, wherein said first and second plates are contained within said first and second covers, respectively.

5. The system of claim 3, wherein a diameter of said first and second plates and a diameter of said first and second covers are greater than or equal to a diameter of said surge arrester.

6. The system of claim 1, further comprising a skin covering said surge arrester, said skin being comprised of a dielectric weather impervious material.

7. The system of claim 1, wherein said slots are arranged in a spiral pattern.

8. The system of claim 1, wherein said slots are straight.

9. The system of claim 1, wherein said slots are curved.

10. The system of claim 1, wherein said first and second plates are comprised of metal.

11. The system of claim 10, wherein both of said first and second plates include a plurality of slots extending substantially radially therein.

12. The system of claim 1, wherein at least one of the slots includes a width substantially larger than a width of other slots.

13. The system of claim 12, wherein the slots define petals between them, and the at least one of the slots includes a width greater than a width of a petal.

14. A method of protecting a surge arrester comprising the steps of:

providing a plate on each end of the surge arrester; and

directing arcs around the surge arrester by means of slots extending substantially radially in at least one of said plates.

15. The method of claim 14, wherein said directing step includes creating a magnetic field during arcing to force the arcs to move around the surge arrester.

16. The method of claim 14, wherein said directing step includes directing arcs with curved slots in said plates.

17. The method of claim 14, wherein said directing step includes directing arcs with substantially straight slots in said plates.

18. The method of claim 14, further comprising the step of containing the arcs with first and second caps covering first and second ends of the surge arrester, respectively.

19. The method of claim 14, further comprising the step of catching material dripping from said surge arrester with a cap covering a lower end of said surge arrester.

20. The method of claim 14, wherein the diameter of said first and second plates and the diameter of said first and second caps are greater than or equal to the diameter of said surge arrester.

21. The method of claim 14, wherein said directing step includes directing arcs to a predetermined position on said surge arrester.

22. The method of claim 14, wherein at least one of the slots includes a width substantially larger than a width of other slots.

23. The system of claim 22, wherein the slots define petals between them, and the at least one of the slots includes a width greater than a width of a petal.

24. A surge protection system comprising:

a surge arrester;

means fixed on a first end of said surge arrester for directing arcs circulating around the surge arrester, said means including a plate with a plurality of slots extending substantially radially therein; and

means at a second end of the surge arrester for receiving the arcs.

25. The system of claim 24, wherein said means at the second end comprises means for directing arcs around the surge arrester.

26. The system of claim 24, wherein said means at the second end includes a plate with a plurality of slots extending substantially radially therein.

27. The system of claim 24, wherein said means fixed on the first end comprises means for directing arcs to a predetermined position on said surge arrester.

28. The system of claim 24, wherein at least one of the slots includes a width substantially larger than a width of other slots.

29. The system of claim 28, wherein the slots define petals between them, and the at least one of the slots includes a width greater than a width of a petal.