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EP-4736198-A1 - ELECTRICAL COMPONENT AND SWITCHGEAR

EP4736198A1EP 4736198 A1EP4736198 A1EP 4736198A1EP-4736198-A1

Abstract

An electrical component (10, 20, 30, 40) comprises a hollow tubular conductor (11, 21, 31, 41) and at least two sheets (12, 22, 32, 42) coupled to a first end (111, 211, 311, 411) of the hollow tubular conductor (11, 21, 31, 41). Two adjacent sheets among the at least two sheets (12, 22, 32, 42) are spaced by a gap (G). The gap (G) is adapted to accommodate a first portion (17, 37, 47) of a main bus bar. Since less connecting members can be used, power loss caused by connecting members can be reduced.

Inventors

  • ZOU, Shengjun
  • XIAO, FENG
  • LIN, Yibin
  • WANG, YONGAN
  • QI, XiaPing

Assignees

  • ABB SCHWEIZ AG

Dates

Publication Date
20260506
Application Date
20230630

Claims (15)

  1. An electrical component (10, 20, 30, 40) , comprising: a hollow tubular conductor (11, 21, 31, 41) ; and at least two sheets (12, 22, 32, 42) coupled to a first end (111, 211, 311, 411) of the hollow tubular conductor (11, 21, 31, 41) , wherein two adjacent sheets among the at least two sheets (12, 22, 32, 42) are spaced by a gap (G) adapted to accommodate a first portion (17, 37, 47) of a main bus bar.
  2. The electrical component (10, 30, 40) of Claim 1, wherein at least two further sheets (13, 33, 43) are coupled to a second end (112, 312, 412) of the hollow tubular conductor (11, 31, 41) opposite to the first end (111, 311, 411) , and wherein the at least two sheet (12, 32, 42) are oriented parallel or non-parallel to the at least two further sheets (13, 33, 43) .
  3. The electrical component (20) of Claim 1, wherein a second end (212) of the hollow tubular conductor (21) opposite to the first end (211) is provided with an opening (25) .
  4. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein the at least two sheets (12, 22, 32, 42) is coupled to a second portion of the main bus bar (19, 39, 49) different from the first portion.
  5. The electrical component (10, 20) of any of Claims 1-3, wherein the at least two sheets (12, 22) and the hollow tubular conductor (11, 21) are integrally formed.
  6. The electrical component (30, 40) of any of Claims 1-3, wherein the at least two sheets (32, 42) and the hollow tubular conductor (31, 41) are separately formed.
  7. The electrical component (30, 40) of Claim 6, wherein the at least two sheets (32, 42) are firstly formed by machining or molding and then weld to the hollow tubular conductor (31, 41) .
  8. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein the hollow tubular conductor (11, 21, 31, 41) is made of a material selected from copper, aluminum, alloys or a combination thereof.
  9. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein the at least two sheets (12, 22, 32, 42) are made of a material selected from copper, aluminum, alloys or a combination thereof.
  10. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein an external cross section of hollow tubular conductor (11, 21, 31, 41) is selected from circle, oval or polygon.
  11. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein an internal cross section of hollow tubular conductor (11, 21, 31, 41) is selected from circle, oval or polygon.
  12. The electrical component (10, 20, 30, 40) of any of Claims 1-3, wherein a shape of each of the at least two sheets is selected from circle, oval or polygon.
  13. The electrical component (10, 20, 30, 40) of Claim 12, wherein the shapes of the at least two sheets are different.
  14. The electrical component (10, 20, 30, 40) of Claim 1, wherein the hollow tubular conductor (11, 21, 31, 41) is in direct-line shape, "Z-shape” , “C-shape” , or “U-shape” .
  15. A switchgear, comprising an electrical component (10, 20, 30, 40) of any of Claims 1-14.

Description

ELECTRICAL COMPONENT AND SWITCHGEAR FIELD Example embodiments of the present disclosure generally relate to a field of low voltage electrical component, and more particularly, to an electrical component and corresponding switchgear. BACKGROUND In switchgear with high, medium or low voltage, rectangular copper sheets are usually used as the main bus bar and distribution branch bus. In a current solution, the cross-sectional area of the conductor is layered with multi-layer copper bars in order to guarantee the current carrying capacity. However, the connection among copper bars should usually be fixed by means of the fasteners, and the contact resistance at the connecting joints is usually greater than that at the other positions. Thus, more connecting joints means more power loss. In the actual applications, the power loss of the conductor is relatively high, which limits the application scope of the approach. Therefore, there still exists a need for the designers to further reduce the power loss of the conductors in the low voltage switchgear. SUMMARY In general, example embodiments of the present disclosure provide an electrical component and corresponding switchgear, which address the existing problems and/or any potential problems. In a first aspect, there is provided an electrical component. The electrical component comprising: a hollow tubular conductor; and at least two sheets coupled to a first end of the hollow tubular conductor, two adjacent sheets among the at least two sheets are spaced by a gap adapted to accommodate a first portion of a main bus bar. According to example embodiments of the present disclosure, since less connecting members can be used, the power loss caused by the connecting members can be reduced. In some example embodiments, at least two further sheets are coupled to a second end of the hollow tubular conductor opposite to the first end, and the at least two sheet are oriented parallel or non-parallel to the at least two further sheets. In some example embodiments, a second end of the hollow tubular conductor opposite to the first end is provided with an opening. In some example embodiments, the at least two sheets is coupled to a second portion of the main bus bar different from the first portion. In some example embodiments, the at least two sheets and the hollow tubular conductor are integrally formed. In some example embodiments, the at least two sheets and the hollow tubular conductor are separately formed. In some example embodiments, the at least two sheets are firstly formed by machining or molding and then weld to the hollow tubular conductor. In some example embodiments, the hollow tubular conductor is made of a material selected from copper, aluminum, alloys or a combination thereof. In some example embodiments, the at least two sheets are made of a material selected from copper, aluminum, alloys or a combination thereof. In some example embodiments, an external cross section of hollow tubular conductor is selected from circle, oval or polygon. In some example embodiments, an internal cross section of hollow tubular conductor is selected from circle, oval or polygon. In some example embodiments, a shape of each of the at least two sheets is selected from circle, oval or polygon. In some example embodiments, the shapes of the at least two sheets are different. In a second aspect, there is provided a switchgear. The switchgear comprises an electrical component in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS Through the following detailed description with reference to the accompanying drawings, the above and other objectives, features and advantages of the example embodiments disclosed herein will become more comprehensible. In the drawings, several example embodiments disclosed herein will be illustrated in an exemplary and in a non-limiting manner, wherein: Fig. 1A illustrates a plurality of electrical components according to a first example embodiment of the present disclosure; Fig. 1B illustrates a perspective view of the electrical component according to the first example embodiment of the present disclosure; Fig. 1C illustrates a cross sectional view of the electrical component according to the first example embodiment of the present disclosure; Fig. 1D illustrates the connection between the electrical component and the corresponding portions of the main bus bar according to the first example embodiment of the present disclosure; Fig. 2A illustrates a perspective view of the electrical component according to a second example embodiment of the present disclosure; Fig. 2B illustrates an explosive view of the electrical component according to the second example embodiment of the present disclosure; Fig. 2C illustrates a cross sectional view of the electrical component according to the second example embodiment of the present disclosure; Fig. 3A illustrates a plurality of electrical components according to a third example embodiment of the present disclosure;