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EP-4738633-A1 - SOLID INSULATION BUSBAR CONNECTION DEVICE AND ASSEMBLY METHOD FOR SOLID INSULATION BUSBAR CONNECTION DEVICE

EP4738633A1EP 4738633 A1EP4738633 A1EP 4738633A1EP-4738633-A1

Abstract

A solid-insulated busbar connector (50) includes a pair of tank connectors (51, 52) attached to two respective electrical devices intended to be connected to each other, and a solid-insulated busbar (30) disposed between the tank connectors (51, 52). The solid-insulated busbar (30) includes vertical busbars (55, 57) each including a first center conductor covered with an electrically insulating resin and each disposed to cause the first center conductor to extend vertically, and a horizontal busbar (56) including a second center conductor covered with an electrically insulating resin and disposed to cause the second center conductor to extend horizontally.

Inventors

  • SASAYAMA, SHOHEI
  • NAKAUCHI, SHINICHIRO
  • SATO, KOMA

Assignees

  • MITSUBISHI ELECTRIC CORPORATION

Dates

Publication Date
20260506
Application Date
20230630

Claims (10)

  1. A solid-insulated busbar connector comprising: a pair of tank connectors to be attached to two respective electrical devices intended to be connected to each other; and a solid-insulated busbar disposed between the tank connectors, wherein the solid-insulated busbar includes: vertical busbars each comprising a first center conductor covered with an electrically insulating resin each being disposed to cause the first center conductor to extend vertically; and a horizontal busbar comprising a second center conductor covered with an electrically insulating resin, the horizontal busbar being disposed to cause the second center conductor to extend horizontally.
  2. The solid-insulated busbar connector according to claim 1, wherein the first center conductor and the second center conductor each has a straight bar shape, the first center conductor has an end portion formed into a rounded-corner quadrangular prism shape, and the second center conductor has an end face abutting in surface contact with a side face of the end portion of the first center conductor.
  3. The solid-insulated busbar connector according to claim 1, wherein the solid-insulated busbar comprises a conductor connector configured to connect the first center conductor and the second center conductor to each other, and the conductor connector is formed of an electrically conductive material.
  4. The solid-insulated busbar connector according to claim 3, wherein the conductor connector comprises a multi-contact including: a cylindrical contact case into which the first center conductor is inserted; and a coil spring contactor disposed on an inner circumferential surface of the contact case and configured to electrically connect the first center conductor and the contact case to each other, wherein the contact case has an end portion having an outer circumference on which a flat portion is formed, and the second center conductor has an end face abutting in surface contact with the flat portion.
  5. The solid-insulated busbar connector according to claim 3, wherein the conductor connector includes a fixing metal configured to fix the first center conductor and the second center conductor to each other.
  6. The solid-insulated busbar connector according to claim 5, wherein the conductor connector includes an insulation cap configured to cover the fixing metal.
  7. The solid-insulated busbar connector according to claim 1, comprising compressors configured to press the respective tank connectors into respective tanks for the electrical devices.
  8. The solid-insulated busbar connector according to any one of claims 1 to 7, wherein the horizontal busbar is disposed at a height level above the tank connectors.
  9. The solid-insulated busbar connector according to any one of claims 1 to 7, wherein the horizontal busbar is disposed at a height level below the tank connectors.
  10. An assembly method for assembling a solid-insulated busbar connector, the solid-insulated busbar connector comprising: a pair of tank connectors to be attached to two respective electrical devices intended to be connected to each other; and a solid-insulated busbar disposed between the tank connectors, wherein the solid-insulated busbar comprises: vertical busbars each comprising a first center conductor covered with an electrically insulating resin that is disposed to cause the first center conductor to extend vertically; and a horizontal busbar including a second center conductor covered with an electrically insulating resin and disposed to cause the second center conductor to extend horizontally, the assembly method comprising a step of coupling, from above, a portion of the solid-insulated busbar comprising at least the horizontal busbar and a conductor connector to a portion of the solid-insulated busbar other than the horizontal busbar and the conductor connector or to the tank connectors.

Description

Field The present disclosure relates to a solid-insulated busbar connector for connecting electrical devices to each other and to an assembly method for assembling such solid-insulated busbar connector. Background Electrical devices such as a gas-insulated device are conventionally connected to each other using a method in which a connector is disposed between the electrical devices intended to be connected to each other, where the connector houses a conductor in a tank filled with an electrically insulating gas such as sulfur hexafluoride to insulate the conductor. Reduction is demanded in recent years from a viewpoint of environmental protection in terms of usage of an insulating gas having a high environmental burden such as sulfur hexafluoride. As such, the connector is demanded to have a configuration that uses no insulating gas having a high environmental burden. Patent Literature 1 discloses a connector including a straight bar-shaped conductor that is circumferentially covered with a solid sheath. The connector disclosed in Patent Literature 1 is configured such that the straight bar-shaped conductor is circumferentially covered with a solid sheath for insulation, thereby the conductor is insulated without using an insulating gas having a high environmental burden. Citation List Patent Literature Patent Literature 1: Japanese Patent Application Laid-open No. 2009-44958 Summary of Invention Problem to be solved by the Invention The connector disclosed in Patent Literature 1 connects devices intended to be connected to each other, using a single straight bar-shaped conductor. This requires that the two electrical devices intended to be connected to each other be installed at a same height level. However, there may be a case where the two electrical devices cannot be installed at a same height level, and a difference occurs in the height level of the two electrical devices depending on the installation environment of the electrical devices intended to be connected to each other. In such a case, the connector disclosed in Patent Literature 1 fails to connect the two electrical devices intended to be connected to each other. The present disclosure has been made in view of the foregoing, and it is an object of the present disclosure to provide a solid-insulated busbar connector that allows connection of electrical devices intended to be connected to each other even when the electrical devices intended to be connected to each other are to be installed at different height levels. Means to Solve the Problem To solve the above problems and achieve the object a solid-insulated busbar connector according to the present disclosure includes: a pair of tank connectors to be attached to two respective electrical devices intended to be connected to each other; and a solid-insulated busbar disposed between the tank connectors. The solid-insulated busbar includes: vertical busbars each including a first center conductor covered with an electrically insulating resin each being disposed to cause the first center conductor to extend vertically; and a horizontal busbar including a second center conductor covered with an electrically insulating resin, the horizontal busbar being disposed to cause the second center conductor to extend horizontally Effects of the Invention The present disclosure provides an advantageous effect in providing a solid-insulated busbar connector that allows connection of electrical devices intended to be connected to each other even when the electrical devices intended to be connected to each other are to be installed at different height levels. Brief Description of Drawings FIG. 1 is a cross-sectional view illustrating a configuration of a solid-insulated busbar connector according to a first embodiment.FIG. 2 is a cross-sectional view illustrating a configuration of vertical busbars of the solid-insulated busbar connector according to the first embodiment.FIG. 3 is a cross-sectional view illustrating a configuration of a horizontal busbar of the solid-insulated busbar connector according to the first embodiment.FIG. 4 is a cross-sectional view illustrating a configuration of conductor connectors of the solid-insulated busbar connector according to the first embodiment.FIG. 5 is a horizontal cross-sectional view of the conductor connectors of the solid-insulated busbar connector according to the first embodiment.FIG. 6 is a cross-sectional view illustrating a configuration of tank connectors of the solid-insulated busbar connector according to the first embodiment.FIG. 7 is a cross-sectional view illustrating a configuration of p compressors of the solid-insulated busbar connector according to the first embodiment.FIG. 8 is a cross-sectional view illustrating a configuration of the solid-insulated busbar connector according to a second embodiment.FIG. 9 is a cross-sectional view illustrating a configuration of the solid-insulated busbar connector according to a third embodiment.FIG. 10 is a top