Method of processing high voltage capacitors
View Patent ↗A high voltage capacitor design is provided that provides improved performance. The high voltage capacitor includes a stack of mechanically bonded capacitor cells, which in one variant utilize a separator formed of two layers of paper. In one version, the high voltage capacitor may be used as a capacitative voltage divider.
1. A method of processing high voltage capacitors, comprising the steps of:
providing at least one sealed high voltage capacitor housing, the housing having an interior and an exterior, and a selectively resealable port, wherein the housing is sealed by an end cap and wherein the end cap includes the selectively resealable port;
selectively passing a fluid between the exterior and the interior at the selectively resealable port; and
detecting with a detector the presence or absence of the fluid at the exterior of the housing.
2. The method of claim 1 , further comprising a step of applying a vacuum to each sealed high voltage capacitor housing.
3. The method of claim 1 , further comprising a step of applying a pressure to each sealed high voltage capacitor housing.
4. The method of claim 1 , wherein the step of selectively passing a fluid is facilitated by application of a pressure differential between the interior and the exterior.
5. The method of claim 4 , wherein the fluid comprises a liquid.
6. The method of claim 4 , wherein the fluid comprises impregnation fluid.
7. The method of claim 6 , wherein between the end cap and the housing there is disposed a seal.
8. The method of claim 1 , further comprising a step of placing each sealed high voltage capacitor housing within a chamber before performing the step of detecting with a detector.
9. The method of claim 8 , wherein the chamber is heated.
10. The method of claim 8 , wherein the chamber comprises a vacuum chamber.
11. The method of claim 1 , wherein the fluid is heated.
12. A method of leak testing high voltage capacitors, comprising the steps of:
providing at least one sealed high voltage capacitor housing, the housing having an interior and an exterior, and a selectively resealable port, wherein the housing is sealed by an end cap and wherein the end cap includes the selectively resealable port;
selectively passing a fluid between the exterior and the interior at the selectively resealable port; and
detecting with a detector the presence or absence of the fluid at the exterior of the housing.
13. The method of claim 12 , further comprising a step of applying a vacuum to each sealed high voltage capacitor housing.
14. The method of claim 12 , further comprising a step of applying a pressure to each sealed high voltage capacitor housing.
15. The method of claim 12 , wherein the step of selectively passing a fluid is facilitated by application of a pressure differential between the interior and the exterior.
16. The method of claim 15 , wherein the fluid comprises a liquid.
17. The method of claim 15 , wherein the fluid comprises impregnation fluid.
18. The method of claim 17 , wherein between the end cap and the housing there is disposed a seal.
19. The method of claim 12 , further comprising a step of placing each sealed high voltage capacitor housing within a chamber before performing the step of detecting with a detector.
20. The method of claim 19 , wherein the chamber is heated.
21. The method of claim 19 , wherein the chamber comprises a vacuum chamber.
22. The method of claim 12 , wherein the fluid is heated.