IP Library Granted Patent US 11,769,618
Granted Patent B2
US 11,769,618 · App. 18/015,356 · Granted Sep 26, 2023

Electrical induction device with contact arrangement for electrically contacting an electrical conductor

Inventors: Zoltan Repasi (Västerås, SE); Fredrik Graas (Borlänge, SE); Erik Forsberg (Smedjebacken, SE); Peter Astrand (Bälinge, SE); Ronnie Blomberg (Ludvika, SE); Alejandra Ravanal (Uppsala, SE)
Assignee: HITACHI ENERGY SWITZERLAND AG
H01F27/04H01B17/265H01F27/40H01F41/005
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Quick Facts
Patent No.
US 11,769,618
App. No.
18/015,356
Granted
Sep 26, 2023
Kind
B2
Abstract

An electrical induction device includes a housing and a contact arrangement in the housing of the electrical induction device for electrically contacting an electrical conductor. The contact arrangement includes a conductor tube, a receiver contact which is fastened to the conductor tube and configured to receive and electrically connect with the electrical conductor, and a resilient suspension arrangement fastened to the housing and connected to an outside of the conductor tube such that the receiver contact is resiliently movable in a plane which is parallel to a cross section of the conductor tube while being substantially immovable in an axial direction of the conductor tube.

Claims (22)

1. An electrical induction device comprising:

a housing; and

a contact arrangement in the housing of the electrical induction device for electrically contacting an electrical conductor, the contact arrangement comprising:

a conductor tube;

a receiver contact which is fastened to the conductor tube and configured to receive and electrically connect with the electrical conductor; and

a resilient suspension arrangement fastened to the housing and connected to an outside of the conductor tube such that the receiver contact is resiliently movable in a plane which is parallel to a cross section of the conductor tube while being substantially immovable in an axial direction of the conductor tube.

2. The electrical induction device of claim 1 , wherein the receiver contact is annular and fastened to an inside or an end of the conductor tube.

3. The electrical induction device of claim 1 , wherein the resilient suspension arrangement is intermittently or continuously connected to the outside of the conductor tube around a circumference of the conductor tube.

4. The electrical induction device of claim 3 , wherein the resilient suspension arrangement is connected to the outside of the conductor tube via a ring encircling the outside of the conductor tube in a radial plane of the conductor tube.

5. The electrical induction device of claim 1 , wherein the receiver contact is resiliently movable a maximum distance from a resting position in the parallel plane which is within a range of from 10 mm to 30 mm.

6. The electrical induction device of claim 1 , wherein the housing is filled with an electrically insulating fluid.

7. The electrical induction device of claim 6 , wherein the electrically insulated fluid is a liquid.

8. The electrical induction device of claim 1 , wherein the electrical induction device is or comprises a transformer or a reactor.

9. An induction device arrangement comprising:

the electrical induction device of claim 1 ; and

the electrical conductor;

wherein the contact arrangement is electrically contacting the electrical conductor.

10. The induction device arrangement of claim 9 , further comprising any one of: a bushing, a cable ending or a surge arrester, in which the electrical conductor is comprised.

11. An electrical connection comprising:

the electrical conductor; and

the contact arrangement of claim 1 electrically contacting the electrical conductor.

12. The electrical connection of claim 11 , wherein a proximal end of the electrical conductor is tapered or rounded.

Assignments (3)
MERGER Recorded Nov 13, 2023
From: HITACHI ENERGY SWITZERLAND AG
To: HITACHI ENERGY LTD
Reel/Frame 065549/0576 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2023
From: REPASI, ZOLTAN; GRAAS, FREDRIK; FORSBERG, ERIK; ASTRAND, PETER; BLOMBERG, RONNIE; RAVANAL, ALEJANDRA
To: ABB POWER GRIDS SWITZERLAND AG
Reel/Frame 062324/0115 →
CHANGE OF NAME Recorded Jan 10, 2023
From: ABB POWER GRIDS SWITZERLAND AG
To: HITACHI ENERGY SWITZERLAND AG
Reel/Frame 062324/0192 →