Electrode arrangement for an electrical component

Patent metadata

Field	Value
Publication number	US-9337646-B2
Application number	US-201214130060-A
Country	US
Kind code	B2
Filing date	Jun 21, 2012
Priority date	Jun 29, 2011
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

An electrode configuration for an electrical component, in particular a surge protector, includes two electrodes extending in a plate-shaped manner parallel to a radial plane relative to a connection axis of the electrodes, defining an axial direction. At least one electrode has a connection region lying in the radial plane and at least two, three or four ribbon-shaped strips each extending away from the connection region and at least partially in circumferential direction relative to the axial direction. A fault arc, occurring during a lightning strike, can be conducted outwards away from the electrical component and forced into rotation around the electrical component in an effective manner due to the ribbon-shaped strips at the outer edge of the connection region and at least two ribbon-shaped strips overlapping each other at a spacing with respect to their delimiting surfaces lying perpendicular to the axial direction.

First claim

The invention claimed is:

1. An electrode configuration for an electrical component, the electrode configuration comprising:
two electrodes having a connection axis defining an axial direction, a radial plane extending radially relative to said connection axis and a circumferential direction extending circumferentially relative to said axial direction;
said electrodes each extending in a plate-shaped manner parallel to said radial plane;
at least one of said electrodes having a connection region lying in said radial plane and at least two ribbon-shaped strips each running away from said connection region at least partly in said circumferential direction;
said connection region having an outer edge;
said ribbon-shaped strips running outwardly in a spiral fashion in said circumferential direction from said outer edge of said connection region; and
at least two of said ribbon-shaped strips having delimiting surfaces each lying perpendicular to said axial direction and overlapping each other at a distance.

2. The electrode configuration according to claim 1 , wherein said at least two ribbon-shaped strips are three or four ribbon-shaped strips.

3. The electrode configuration according to claim 1 , wherein:
said ribbon-shaped strips have a longitudinal direction;
said ribbon-shaped strips have, one after another in said longitudinal direction, an initial region bordering said connection region, a first transition region adjoining said initial region, a center region adjoining said first transition region, a second transition region adjoining said center region and an end region adjoining said second transition region; and
said initial region, said center region and said end region have a larger radius of curvature than said first and second transition regions.

4. The electrode configuration according to claim 3 , wherein said end region of one of said ribbon-shaped strips overlaps said center region of an adjacent one of said ribbon-shaped strips in said axial direction.

5. The electrode configuration according to claim 1 , wherein:
said ribbon-shaped strips each have a length, a center region and an end region along said length; and
said ribbon-shaped strips are bent in said center region into an S-shape with an offset in said axial direction, placing said end regions in a plane offset parallel to said radial plane of said connection region.

6. The electrode configuration according to claim 1 , wherein said ribbon-shaped strips each have a free end region, and said free end region of at least one of said ribbon-shaped strips tapers to a point with a tapering on a radially inner side in said axial direction.

7. A surge arrester, comprising:
said electrode configuration having two electrodes according to claim 1 .

8. The electrode configuration according to claim 1 , wherein said delimiting surfaces of said ribbon-shaped strips are outermost surfaces of said ribbon-shaped strips.

Assignees

• Sulitze Markus
• Siemens Ag

Inventors

• Sulitze Markus

Classifications

• H01T4/14

  Arcing horns (associated with insulators H01B17/46) · CPC title

• H01T4/00

  Overvoltage arresters using spark gaps (H01T2/00 takes precedence; overvoltage protection circuits using spark gaps H02H9/06) · CPC title

• H01T4/04 Primary

  Housings (H01T4/06 takes precedence) · CPC title

• H02H3/22 Primary

  of short duration, e.g. lightning · CPC title