JP2007082363A - Distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple distribution board capable of performing maintenance and inspection safely for a connection state to a connection plate for one breaker without stopping power supply to a load device, and facilitating fixing the connection plate by required fixing strength. <P>SOLUTION: This distribution board includes: a plurality of multi-phase breakers 8 having a terminal 10 protruded from a back surface; the connection plate 11 attached at the terminal of the breaker; a top cover 18 having a horizontal surface for covering the connection plate; a back cover 19 which has a vertical surface for covering the edge part of the connection plate and is provided for each breaker, and insulation member attaching surfaces 18c, 18d which are provided in parallel to the horizontal surface of the upper part cover formed by bending twice an edge orthogonal to a direction in which the connection plate extends. The connection plate is fixed at the top cover through the first insulation members 12, 13 at the upper edge, and fixed on the back cover through the insulation member 16 at the extension edge part, and the back cover and the upper part cover are detachably integrated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a switchboard having a cover that covers a relatively long plate-like connecting plate that is extended and attached from a terminal of a circuit breaker.

  A ship with a large electric load capacity is equipped with a plurality of generators, and a plurality of circuit breakers corresponding to each generator are housed in a switchboard. Some of these circuit breakers have an input terminal and an output terminal protruding from the back surface, and a plurality of relatively thick cables are connected to the generator for each input terminal. In order to connect this cable, a connection plate extending in the back surface direction is often attached to the input terminal. A conventional example of a switchboard equipped with such a circuit breaker is disclosed in Japanese Patent Laid-Open No. 2001-177923.

  Referring to FIG. 3, three three-phase circuit breakers 100 juxtaposed horizontally in front of this conventional switchboard are provided so that an upper terminal 101 and a lower terminal 102 protrude from the rear surface. It has been. Upper terminal 101 is connected to a load device (not shown) via relay conductor 103 and main bus 104. The lower terminal 102 is provided such that its width surface is a vertical surface, and a connection plate 105 is attached toward the rear surface of the switchboard in order to increase the connection surface of the cable. A plurality of cables from a generator (not shown) are connected to the connection plate 105.

Such a connection plate 105 requires an upper cover that prevents a short circuit accident and an electric shock accident due to a metal object falling from above, and a back cover that prevents an electric shock accident that is accidentally touched from the back of the switchboard. Although the upper cover is not clearly shown in FIG. 3, a back cover 106 is attached that collectively covers the connection plates 105 corresponding to the three circuit breakers.
Further, it is necessary to firmly fix the connection plate 105 so that a predetermined interval between the respective phases is not reduced by an external force caused by attaching a cable or a repulsive force when a short-circuit current flows. For this reason, the front end of the connection plate 105 is fixed to the back cover 106 via the insulator-like insulating member 107, and the upper side of the connection plate 105 is passed to the left and right side plates 111 of the switchboard via the insulator-like insulating member 108. Are fixed to a frame member 109 and a plate member 110.
JP 2001-177923 A

The above-described conventional switchboard is basically composed of a vertical member composed of left and right side plates of the switchboard and a horizontal member provided so as to be passed to the vertical member. The backside cover 106, the frame member 109, and the like are clearly shown. There was no upper cover, which was composed of cross members shared by the three circuit breakers.
For this reason, when checking the cable connection state of one circuit breaker or performing maintenance by tightening the cable connection bolts, when removing the back cover 106, the connection plates corresponding to the three circuit breakers are exposed. Therefore, it was necessary to stop the generators corresponding to the two circuit breakers other than the circuit breaker to be inspected and maintained to be in a non-live line state. Further, since the back cover 106 is horizontally long corresponding to the three circuit breakers, it is necessary to remove the back door of the switchboard when removing it.

  Furthermore, in this switchboard, in order to make the attachment strength of the connection plate 105 appropriate, the attachment position of the insulating member 108 (the attachment position in the left-right direction in FIG. 3A) and the number of attachments are appropriate. There is a need to. However, for this purpose, there is a problem that adjustment of the mounting position of the frame member 109 and an additional frame member corresponding to the frame member 109 are required.

  Therefore, according to the present invention, the connection state to the connection plate can be safely and easily maintained and checked for each circuit breaker without stopping the power supply to the load device, and the connection plate can be easily fixed with the required strength. An object is to provide a switchboard having a simple structure.

  In order to solve the above problem, the switchboard of the invention of claim 1 includes a plurality of horizontally arranged multiphase circuit breakers having terminals protruding from the back surface so that the width surface is a vertical surface, and terminals of the circuit breaker A connecting plate that is attached so that the protruding dimension of the terminal is extended, a top cover that is positioned above the connecting plate and has a horizontal surface that covers the connecting plate, and a vertical surface that covers the extended end of the connecting plate A back cover having a horizontal plane, the back cover having a horizontal plane bent at a right angle from the vertical plane and provided for each circuit breaker, and the upper cover extending from a side perpendicular to the extending direction of the connecting plate on the horizontal plane. An insulating member mounting surface parallel to the horizontal surface of the upper cover formed by folding is provided, and the connecting plate is fixed to the insulating member mounting surface of the upper cover via the first insulating member at the upper side thereof. Is fixed to the vertical plane of the back cover via the second insulating member in the long end, the back cover is characterized in that it is detachably integrated with the upper cover in its horizontal plane.

Since the invention of claim 1 is configured to fix the connecting plate to the insulating member mounting surface of the upper cover via the first insulating member, the insulating member mounting according to the position to be fixed and the number of positions to be fixed There is an effect that the connection plate can be easily fixed with an appropriate strength with a simple structure only by using an upper cover having a surface.
In addition, when checking and maintaining the connection state of the connection plate corresponding to one circuit breaker, it is safer by removing the back cover corresponding to the circuit breaker by opening the rear door of the switchboard. It is also possible to provide a switchboard that can continue to supply power to the load from the two circuit breakers.

Embodiments of the present invention will be described with reference to the examples shown in FIGS.
Referring to FIGS. 1 and 2, the switchboard of this embodiment includes a lower horizontal frame member 1 and an upper horizontal frame member 2, a front side vertical frame member 3 and a back side vertical that are located on the left side and the right side when viewed from the front. The cross section provided between the frame member 4 and the lower horizontal frame member 1 and the upper horizontal frame member 2 includes a frame member including vertical frame members 5 and 6 having L-shaped cross sections.

  Three three-phase circuit breakers 8 are installed side by side in the left-right direction when viewed from the front side on the front side of the switchboard. Each of the circuit breakers 8 is provided with a plate-like output terminal 9 and input terminal 10 positioned on the upper side and the lower side, respectively, so as to protrude from the back surface so that the width surface becomes a vertical surface. The output terminal 9 is connected to a strip-shaped conductor (not shown) connected to the load device via a main bus or the like. On the other hand, a substantially rectangular connection plate 11 is attached to the input terminal 10 so as to extend the circuit breaker 8 toward the rear surface of the switchboard, and an external cable (not shown) connected to an external generator is connected to the input terminal 10. A large number of holes 11 a for connection are formed along the lower side of the connection plate 11. The adjacent circuit breaker 8 and connection plate 11 are separated from each other by a partition plate in the depth direction of the switchboard.

The above-mentioned connecting plate 11 is provided with insulator mounting brackets 14 and 15 each having an L-shaped cross section attached to the upper side thereof for attaching the insulators 12 and 13 as the first insulating members. An insulator mounting bracket 17 having an L-shaped cross section for attaching the insulator 16 as a member is attached to the extended end portion.
The insulators 12 and 13 on the upper side of the connection plate 11 are fixed to an upper cover 18 that protects the connection plate 11 from foreign matters falling from above. The upper cover 18 is a rectangular member that is long on the left and right sides common to the three circuit breakers 8 when viewed from the front or rear surface of the switchboard, and is formed by being bent at right angles on both right and left ends of the horizontal plane 18a. The cover mounting surface 18b is fixed to the vertical bent pieces 4a of the left and right vertical frame members 6 and the back surface side vertical frame member 4.
The upper cover 18 has an insulator mounting surface 18c and an insulator mounting surface 18d bent downward at right angles from two long sides of the horizontal plane 18a orthogonal to the connecting plate 11, and further bent at a right angle to a plane parallel to the horizontal plane 18a. The insulators 12 and 13 are fixed with screws. In FIG. 2A, the insulators 12, 13, 16 and the insulator mounting brackets 15, 17 are not shown.

  The back cover 19 for preventing an electric shock accident caused by a person touching the connection plate 11 inadvertently from the back of the switchboard has a rectangular vertical surface 19a when the switchboard is viewed from the back, and the insulator 16 is placed on the vertical surface 19a. It is fixed with screws. The back side cover 19 is detachably attached to the horizontal surface 18a of the upper cover 18 with a screw on a horizontal surface 19b formed by bending at a right angle from the upper side thereof, and right angle bending pieces are formed on the other three sides of the vertical surface 19a. Strength.

The switchboard of this embodiment configured as described above is bent by using the upper cover 18 that is common to the respective connection plates 11 corresponding to the three circuit breakers 8 and can be easily attached to the switchboard. Each connecting plate 11 can be reliably fixed at two points of the insulator attachment surface 18c and the insulator attachment surface 18d formed by processing. If only one of the circuit breakers 8 is turned OFF and only the corresponding generator is de-energized, and the back cover 19 corresponding to the circuit breaker 8 is removed from the upper cover 18 and the insulator 16, other power generation While supplying power to the load from the machine, the connection state of the connection plate 11 corresponding to the circuit breaker 8 and the external cable can be inspected and maintained. A small window 19c is formed on the vertical surface 19a of the back cover 19 of this embodiment, and only visual inspection is possible without removing the back cover 19.
Furthermore, in the switchboard of this embodiment, a rectangular hole 18e is formed in the horizontal surface 18a of the upper cover 18, and a connection plate is formed in cooperation with the notch 19d formed in the horizontal surface 19b of the back cover 19. Since the rectangular wiring hole 20 for deriving a thin control line connected to 11 is formed, the control lines in the switchboard can be arranged in an orderly manner.

  Further, according to the present invention, the attachment position of the insulator 12 or the insulator 13 can be changed by extending the insulator attachment surface 18c or the insulator attachment surface 18d in the left direction in FIG. 2 or bending it in the opposite direction. It is also possible to increase the attachment strength of the connection plate 11 by attaching an additional insulator.

It is the (a) side view and (b) back view which show the principal part inside the switchboard of a present Example. FIG. 2A is a plan view and FIG. 2B is a side view showing a circuit breaker taken out from FIG. It is the (a) side view and the (b) back view which show the inside of the conventional switchboard.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower horizontal frame member 2 Upper horizontal frame member 3 Front side vertical frame member 4 Back side vertical frame member 4a Bending piece 5,6 Vertical frame member 8 Breaker 9 Output terminal 10 Input terminal 11 Connection board 11a Hole 12, 13, 16 Insulator 14, 15, 17 Insulator mounting bracket 18 Upper cover 18a Horizontal surface 18b Upper cover mounting surface 18c, 18d Insulator mounting surface 18e Rectangular hole 19 Back side cover 19a Vertical surface 19b Horizontal surface 19c Small window 19d Notch 20 Wiring hole

Claims (1)

A plurality of multi-phase circuit breakers juxtaposed in a horizontal direction having terminals protruding from the back so that the width surface is a vertical surface;
A connection plate attached to the terminal of the circuit breaker so that the protruding dimension of the terminal is extended;
An upper cover having a horizontal surface located on top of the connection plate and covering the connection plate;
A backside cover having a vertical surface to cover the extended end of the connection plate;
In a switchboard with
The back side cover has a horizontal surface bent at a right angle from the vertical surface and is provided for each circuit breaker,
The upper cover has an insulating member mounting surface parallel to the horizontal surface of the upper cover formed by being bent twice from a side perpendicular to the extending direction of the connection plate of the horizontal surface,
The connecting plate is fixed to the insulating member mounting surface of the upper cover via a first insulating member on the upper side and fixed to the vertical surface of the back cover via a second insulating member at an extended end portion thereof. And
The switchboard is characterized in that the back cover is detachably integrated with the upper cover in a horizontal plane.

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