High-voltage feed-through bushing with internal and external...

Details High-voltage feed-through bushing with internal and external... High-voltage feed-through bushing with internal and external...

2007-11-30

2010-10-05

Estrada, Angel R (Department: 2831)

Electricity: conductors and insulators

Insulators

Combined

C174S13700R, C174S155000, C174S1520GM

Reexamination Certificate

active

07807930

ABSTRACT:
A high-voltage (HV) bushing that comprises first and second sections, at least two internal grading elements, and at least two external grading elements. The first and second sections each have a HV end and a grounded end. The exterior of the first section is configured to be exposed to open air. One internal grading element is mounted to the HV end of the first section and another internal grading element is mounted to the grounded end of the first section. One of the external grading elements is mounted to the HV end of the first section and another external grading element is coupled to the grounded end of the first section. The internal grading elements and the external grading elements are each configured to moderate an electric field along the inner and outer surfaces of the HV bushing near the HV end and the grounded end of the first section.

REFERENCES:
patent: 2859271 (1958-11-01), Johnston et al.
patent: 5466891 (1995-11-01), Freeman et al.
patent: 6218627 (2001-04-01), Shindo et al.
patent: 6951987 (2005-10-01), Hansen et al.
patent: 7262367 (2007-08-01), Donzel et al.
S. Monga, R. S. Gorur, P. Hansen, W. Massey; Design Optimization of High Voltage Bushing Using Electric Field Computations; IEEE Transactions on Dielectrics and Electrical Insulation, vol. 13, No. 6; Dec. 2006.

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