JPS6216005A - Closure power board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a closed power distribution board, and particularly to a wall-contact type power distribution board with a reduced panel depth.

[Background of the invention]

Traditionally, closed switchboards were configured with circuit breakers in the front, followed by disconnectors, busbars, etc., and conductors, alternators, cable heads, etc. in the rear, and maintenance and inspections were often performed from the front and back. In some other models, the circuit breaker and disconnector were placed in the front, and the current transformer and cable head were placed on the side, but this made the routing of the conductors complicated, making it difficult to separate each unit, and making maintenance and inspection difficult. It was difficult to do. Incidentally, examples of this type of closed switchboard include Japanese Utility Model Publication No. 48-44828.56-735.

[Purpose of the invention]

The purpose of the present invention is to enable the panel to be attached to the wall, to allow the circuit breaker to be inserted at right angles to the side, by arranging the disconnection section on the side, and by arranging the current transformer cable on the side as well, to separate each unit room and to facilitate maintenance and inspection. To provide a closed power distribution board capable of reducing the depth of the board while reducing the size of the switchboard.

[Summary of the invention]

The present invention provides a movable plate movable at right angles to the inserting direction of the circuit breaker at the bottom of the drawer-type circuit breaker, and after inserting the circuit breaker with the main circuit contacts arranged horizontally into the panel, a rotating plate provided on the panel is installed. A movable hook can be inserted and moved at right angles using a rotating handle to allow insertion into the disconnection section.The current transformer and cable heads are also placed on the side, allowing the unit rooms to be separated without crossing over, allowing for maintenance and inspection. This is an attempt to reduce the size of the board.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the internal structure of the closed power distribution board of the present invention with the front door 2 open. Inside the power distribution box case 1, there are a main circuit busbar 3, an insulator 4 that supports it, and branch conductors 5 that branch out from the busbar 3 into various stages. It is a provision.

The drawer-type speed disconnector 6 is provided with an axle 7, and main circuit contacts 8 are provided on each slide in a direction exactly perpendicular to the moving direction of the axle. Reference numeral 6' indicates the so-called disconnection position in which the circuit breaker 6 is pulled out. When inserting the circuit breaker into the panel, a moving plate 9 is provided between the floor of the distribution box case 1 and the circuit breaker 6, and the circuit breaker 6 is inserted into the axle 7 from outside the panel, as shown in FIG.
It is inserted into the board by. The pin 10 provided in the circuit breaker 6 in the inserted state causes the circuit breaker 6 and the movable plate 9 to be in a fixed state. Next, the hook 12 provided on the board side is rotated in the direction of the arrow to engage the engagement receiver 11 provided on the side surface of the circuit breaker 6 with the circuit breaker 6. FIG. 5 shows a device for engaging the board and the circuit breaker, that is, for bringing the main circuit contact 8 into and out of contact with the disconnecting section 13 of the board. The hook 12 is welded to the rod 15, and when the circuit breaker is connected or disconnected, when the moving handle 14 is rotated, the hook 12 is moved to the connected position shown in Fig. 6 or the disconnected position 6' by the moving plate 9 and rollers 23 and 24. is possible. Therefore, the circuit breaker 6 can be moved in the right angle direction.

Next, on the switchboard side, as shown in FIG. 1, the busbar side conductor 16 is connected to the branch conductor 5 at the horizontally arranged disconnection section 13, and the cable side conductor 17 is connected to the current transformer 18 and the cable head 19, respectively. ing. Therefore, the busbar room 20, the circuit breaker 2
1. It is separated so that it can be completely separated from the cable room 22, which prevents the spread of accidents. In addition, since the circuit breaker 6, disconnector 13, current transformer 18, and cable head 19, excluding the busbar, are placed on the side, maintenance and inspection can be easily carried out from one side, so the rear part can be placed in close contact with the wall. However, the depth of the board can be reduced without any problem. Furthermore, even when the circuit breaker 6 is moved from the disconnection position to the connection position, since the engaging part is provided almost at the center of the contact 8, the balance of insertion is at the center against the reaction force, and the insertion is evenly balanced. It is.

〔Effect of the invention〕

According to the present invention, the movable plate provided below the circuit breaker and the engagement reversing section facilitate the right-angle movement of the circuit breaker, and the side arrangement allows for plenty of space for the bus bar, cable room, etc., and facilitates inspection. As a result, the panel depth and installation area can be reduced even though each unit room is separate.

[Brief explanation of the drawing]

FIG. 1 is a front view of a closed switchboard according to an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of FIG. FIG. 5 is a perspective view of the engaging rotating part for moving the circuit breaker.

Claims (1)

[Claims] 1. A main circuit bus bar and a side draw-out type circuit breaker in a grounded metal case;
In a structure in which the current transformer and the cable head are stacked and each unit is separated by connecting conductors to each other, the current transformer and the cable head are arranged on the side, and the disconnecting part is also on the side so that the draw-out type circuit breaker is inserted at right angles. A branch bus bar is arranged so as to be in close contact with a wall on the side of the circuit breaker, a moving floor plate is provided at the bottom of the circuit breaker, and a push lever provided on the side of the panel is used to move the circuit breaker toward and away from the disconnection section. A closed switchboard featuring: 2. The closure according to claim 1, characterized in that a moving pin is provided on the side surface on the operating side of the circuit breaker so as to be located in the center of the main circuit sliding contact of the circuit breaker inserted at right angles. switchboard.