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EP-4742293-A1 - FUSE CIRCUIT BREAKER WITH SELECTIVE FUSE SEPARATION

EP4742293A1EP 4742293 A1EP4742293 A1EP 4742293A1EP-4742293-A1

Abstract

A fuse-switch disconnector comprises a plurality of fuse holders, each arranged to be movable back and forth relative to a housing between a respective operating position and a respective disconnect position; an actuating slide, arranged to be movable back and forth relative to the housing between a closed position and an open position; and a plurality of selection slides, each arranged to be movable back and forth relative to the actuating slide between a respective engagement position and a respective release position. When the actuating slide is in the closed position and one or more selection slides are in the respective engagement position, the one or more selection slides and one or more corresponding fuse holders are engaged, so that when the actuating slide is moved from the closed position to the open position, the one or more corresponding fuse holders are moved from the respective operating position to the respective disconnect position.

Inventors

  • BRUCHMANN, KLAUS

Assignees

  • Klaus Bruchmann GmbH

Dates

Publication Date
20260513
Application Date
20250716

Claims (15)

  1. Fuse-switch disconnector (1) for a busbar system, wherein the fuse-switch disconnector (1) comprises: a case (10); a plurality of fuse holders (11) for receiving a plurality of fuse links (2), wherein the plurality of fuse holders (11) are arranged to be movable back and forth relative to the housing (10) between a respective operating position and a respective disconnect position; an actuating slide (12) which is arranged to be movable back and forth relative to the housing (10) between a closed position and an open position; a plurality of selection slides (13) each for forming an engagement with a corresponding locking holder (11) of the plurality of locking holders (11), wherein the plurality of selection slides (13) are each attached to the actuating slide (12) and are arranged to be movable back and forth relative to the actuating slide (12) between a respective engagement position and a respective release position; wherein, when the actuating slide (12) is in the closed position, the majority of the safety holders (11) are in the respective operating position; wherein, when the actuating slide (12) is arranged in the closed position and one or more selection slides (13) of the majority of the selection slides (13) are arranged in the respective engagement position, the one or more selection slides (13) and the one or more corresponding locking holders (11) are each engaged, so that when the actuating slide (12) is moved from the closed position to the open position, the one or more corresponding locking holders (11) are moved from the respective operating position to the respective disconnect position; and wherein, when the actuating slide (12) is arranged in the closed position and one or more selection slides (13) of the majority of the selection slides (13) are arranged in the respective release position, the one or more selection slides (13) and the one or more corresponding locking holders (11) are not engaged, so that when the actuating slide (12) is moved from the closed position to the open position, the one or more corresponding locking holders (11) remain in the respective operating position.
  2. Fuse load disconnect switch (1) according to claim 1, wherein the actuating slide (12) is configured such that, when one or more fuse holders (11) are arranged in the respective disconnect position and the actuating slide (12) is moved from the open position to the closed position, the actuating slide (12) exerts a force exerts force on one or more fuse holders (11) and thereby moves one or more fuse holders (11) from the respective disconnect position to the respective operating position.
  3. Fuse load disconnect switch (1) according to claim 1 or 2, wherein, when the actuating slide (12) is arranged in the closed position, the actuating slide (12) locks the majority of the fuse holders (11) in the respective operating position.
  4. Fuse load disconnect switch (1) according to one of the preceding claims, wherein the majority of the fuse holders (11) are arranged pivotably between the operating position and the disconnect position.
  5. Fuse load break switch (1) according to one of the preceding claims, wherein the actuating slide (12) is arranged between two opposing side sections (101) of the housing (10).
  6. Fuse load disconnect switch (1) according to one of the preceding claims, comprising a spring-groove connection between the housing (10) and the actuating slide (12) for guiding the actuating slide (12) relative to the housing (10) between the closed position and the open position.
  7. Fuse load break switch (1) according to one of the preceding claims, wherein the actuating slide (12) is arranged to be linearly movable relative to the housing (10) between the closed position and the open position along an X-direction; wherein the majority of the selection sliders (13) are arranged to be linearly movable relative to the actuating slider (12) between the respective engagement position and the respective release position along a Y-direction; and where the Y-direction is perpendicular to the X-direction.
  8. Fuse load disconnect switch (1) according to one of the preceding claims, wherein the plurality of selection sliders (13) each comprise an operating section (131) for moving, by a user, the respective selection slider (13) between the engagement position and the release position and a selection slider engagement section (132) for forming the engagement with the corresponding fuse holder (11).
  9. Fuse load disconnect switch (1) according to claim 8, wherein the plurality of fuse holders (11) each comprise a fuse holder engagement section (112); and wherein, when the actuating slide (12) is arranged in the closing position and a selection slide (13) is arranged in the engagement position, the selection slide engagement section (132) of the selection slide (13) and the fuse holder engagement section (112) of the corresponding fuse holder (11) overlap in a direction along which the selection slide (13) is movable relative to the actuating slide (12) and thereby cause the selection slide (13) and the corresponding fuse holder (11) to be engaged.
  10. A fuse switch disconnector (1) according to one of the preceding claims, wherein the plurality of fuse holders (11) are each configured such that a fuse link (2) received by a fuse holder (11) is arranged to be movable back and forth relative to the fuse holder (11) between an insertion position and an removal position; wherein the fuse switch disconnector (1) is configured such that: when the fuse holder (11) is arranged in the operating position, the fuse link (2) is arranged in the insertion position, and when the fuse holder (11) is moved from the operating position to the disconnect position, the fuse link (2) is moved from the insertion position to the removal position.
  11. Fuse load disconnect switch (1) according to claim 10, wherein the plurality of fuse holders (11) each comprise a spring element for exerting a spring force on a respective fuse insert (2) for moving the respective fuse insert (2) from the insertion position to the removal position.
  12. Fuse load disconnect switch (1) according to one of the preceding claims, wherein the actuating slide (12) has a plurality of openings (122) for the plurality of fuse holders (11); and wherein, when the actuating slide (12) is in the open position and a fuse holder (11) is in the disconnect position, the fuse holder (11) protrudes from the housing (10) through a respective opening of the actuating slide (12).
  13. Fuse switch disconnector (1) according to claim 12, wherein the actuating slider (12) comprises a plurality of ON marking sections (121) for the plurality of fuse holders (11) and the plurality of fuse holders (11) each comprise an OFF marking section (111); and wherein, when the actuating slide (12) is in the open position and a fuse holder (11) is in the disconnect position, the OFF marking section (111) of the fuse holder (11) protrudes from the housing (10) through a respective opening of the actuating slide (12) and thereby covers the respective ON marking section (121) of the actuating slide (12).
  14. Fuse load disconnect switch (1) according to one of the preceding claims, comprising three fuse holders (11) for three phases.
  15. System comprising the fuse load disconnect switch (1) according to one of the preceding claims and the plurality of fuse links (2).

Description

The present invention relates to a fuse-switch disconnector for a busbar system. EP 1 818 963 B1 This describes a three-phase fuse-switch disconnector with three levers for the three phases, whereby each lever can be used to disconnect one of the three phases individually. However, this has the disadvantage that multiple levers must be operated to disconnect multiple phases. DE 10 2012 025 602 B4 This describes a three-phase fuse-switch disconnector with a control unit that allows all three phases to be disconnected simultaneously. However, this has the disadvantage that it is not possible to select individual phases to be disconnected and leave the remaining phases operational. EP 4 439 610 A1 This document describes an NH fuse switch disconnector comprising a device for connection to a power supply, a housing, at least two switch covers, and at least one bearing device by means of which the switch covers are movably mounted on the housing relative to it. The switch covers can be positioned in a fuse-operating position for connecting fuses located on the switch covers to the power supply and in a fuse-disconnecting position for disconnecting the fuses from the power supply. The switch covers are rigidly connected to one another. Advantageously, at least the two switch covers, and preferably several of the switch covers, are connected to one another such that, upon direct actuation of just one of the switch covers, they can move together into the fuse-operating position and/or into the fuse-disconnecting position. It is an object of the present invention to provide a fuse-switch disconnector in order to improve user-friendliness with regard to the desired applications. This problem is solved by a fuse-switch disconnector according to claim 1 and a system according to claim 15. Claims 2 to 14 relate to particularly advantageous implementations of the fuse-switch disconnector according to claim 1. The present invention relates to a fuse-switch disconnector for a busbar system. The fuse-switch disconnector comprises a housing and a plurality of fuse holders or fuse sockets for receiving or holding a plurality of fuse links or fuses or fusible links. In particular, each fuse holder can receive a fuse link for a respective phase of the fuse-switch disconnector. The fuse-switch disconnector can, in particular, be three-phase and comprise three fuse holders, each for a corresponding fuse link of a corresponding phase. The majority of fuse holders are arranged to be movable back and forth relative to the housing between a specific operating position and a specific disconnect position. Specifically, when a fuse holder is in the operating position, a fuse inserted into the holder can be connected to the electrical contacts of the fuse-switch disconnector to contact a corresponding busbar of the busbar system and/or a corresponding output contact of the fuse-switch disconnector, thus closing a circuit for the respective phase. Conversely, when the fuse holder is in the disconnect position, the fuse can be disconnected from the electrical contacts to interrupt the circuit for the respective phase and to allow safe removal of the fuse from the holder or insertion of a (new) fuse set into the holder. The fuse-switch disconnector further comprises an actuating slide (or actuating element) that is arranged to be movable back and forth relative to the housing between a closed position and an open position, in particular linearly or substantially linearly. The actuating slide may be arranged, attached, or fastened to the housing, or may be an integral part of the housing. The actuating slide may also be plate-shaped. The state of the fuse-switch disconnector in which the actuating slide is arranged in the closed position is hereinafter also referred to as the "closed state." The state of the fuse-switch disconnector in which the actuating slide is arranged in the open position is hereinafter also referred to as the "open state." The fuse-switch disconnector further comprises a plurality of selection sliders (or selection elements), each for forming an engagement with a corresponding The majority of the fuse holders are fuse holders. The majority of the selection sliders are attached, fastened, or arranged on the actuating slider and are each movable back and forth relative to the actuating slider between a respective engagement position and a respective release position, in particular linearly or substantially linearly movable. When the actuating slide is in the closed position, the majority of the fuse holders are in their respective operating positions. This can be achieved, in particular, by ensuring that when one or more fuse holders are in their respective disconnect positions and the actuating slide is moved from the open position to the closed position, the actuating slide exerts a force on the one or more fuse holders, thereby moving them from the disconnect position to the operating position, as described below. Wh