JPS596085Y2 - Surge suppressor mounting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an attachment device for a breaker and a surge suppressor that are detachably attached to a main circuit bus bar in a housing such as a cubicle.

Conventionally, the so-called C-R type or gapped arrester type was used as a surge suppressor, so the external size became large, making it difficult to store these surge suppressors and circuit breakers, especially vacuum circuit breakers, together in a cubicle. In this case, the cubicle was made larger and the vacuum breaker and surge suppressor were placed separately.

For this reason, there is a drawback that the area occupied by the cubic knot increases.

In addition, the surge suppressor and vacuum breaker are ON-OFF.
Since the structure is not designed to allow this, it is troublesome and inefficient, such as having to disconnect the connection each time to protect the surge suppressor, such as during a commercial frequency withstand voltage test.

Furthermore, the surge suppressor has conventionally been connected to a vacuum breaker only for the purpose of suppressing surges arriving at the power source.

The present invention eliminates the above-mentioned drawbacks, integrates a vacuum breaker and a surge suppressor into a compact cubicle, and allows the surge suppressor to be separated from the vacuum breaker during a withstand voltage test. It is an object of the present invention to provide a mounting device for a surge suppressor that can protect the surge suppressor and connect the surge suppressor to either the power source side or the load side.

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

In FIGS. 1A, B, and C, reference numeral 1 denotes a vacuum breaker device indicated by dotted lines in which the operation part of a vacuum breaker 2 is housed, and this breaker device 1 is provided with casters 3 for easy movement. There is.

Reference numeral 4 denotes a connecting conductor connected to the fixed electrode side of the vacuum breaker 2, and this connecting conductor 4 is inserted into a terminal 5 provided on the power source side of the main circuit bus.

A connecting conductor 6 is connected to the movable electrode side of the vacuum breaker 2, and this connecting conductor 4 is inserted into a terminal 7 provided on the load side of the main circuit bus.

8 is a plate body, and the lower part 8a of this plate body 8 is the vacuum breaker device 1.
As shown in FIG. 2, the upper part 8b is shaped so as to be tilted to the right in the figure by a hinge 10.

Reference numeral 11 denotes a handle, which is used when moving the vacuum breaker 1 and also serves as a stopper for the upper part 8b of the plate body 8.

12 is a stopper for preventing the plate 8 from falling to the left in FIG. 1A.

Reference numeral 13 denotes a ground bus bar made of a plain braided wire or electric wire, and this ground bus bar 13 is formed on the left side of the plate 8 in FIG. be done.

15 is a non-linear resistance type surge suppression forest (Figure 1B,
(3 phases are shown in Figure C), and one end of this surge suppressor 15 is connected to Figure 4A through the mounting conductor 16 as shown in Figure 3.
, B is removably attached to the positioning recess 14a of the ground conductor 14 with a screw 17.

In FIG. 3, reference numeral 18 indicates the position of the surge suppressor 15, and labels 18 are provided at the upper and lower parts of the figure for identification.
a, 18 b are attached.

In FIG. 4, 14b is a hole for attaching the ground bus 13 with a screw (not shown), and 14C is a screw hole for the screw 17.

As shown in FIG. 3, the plate 8 is provided with window holes 19 a and 19 b for confirming the position of the surge suppressor 15 .

The other end of the surge suppressor 15 is connected to the connection conductor 4 of the main circuit busbar.
, 6.

As shown in FIG. 5, the connection conductor 4 has a contact piece 20.
The surge suppressor 15 is provided with a contact mechanism 21 that clamps the contact piece 20.

Note that a contact piece 22 is provided on the connecting conductor 6 shown in FIG. 1A.

6A and 6B show the grounding structure of the ground bus 13, and 23 is a grounding contact, and this contact 23 is brought into contact with a grounding plate 24 provided in a cubicle or the like.

The contactor 23 is attached to the conductor plate 25 with a spring 26, a screw 27, etc.

The ground bus bar 13 is connected to the conductor plate 25 .

In the embodiment constructed as described above, in order to disconnect the vacuum breaker 1 from the main circuit busbar, the handle 11 is moved in the direction shown in FIG. 1A.
When pulled in the right direction, the connecting conductors 4 and 6 come off from the terminals 5 and 7, so they can be easily separated.

Next, when the vacuum breaker 1 is connected to the main circuit bus, in order to remove the surge suppressor 15 from the main circuit bus during a withstand voltage test, etc., remove the upper part 8b of the plate 8 as shown in FIG. 1A. Fold it down as shown by the dotted line.

Then, the contact mechanism 21 is removed from the contact piece 20, so there is no need to disconnect the vacuum breaker 1 from the main circuit bus bar as in the conventional case.

When it is desired to connect the surge suppressor 15 to the load side, the surge suppressor 15 is rotated 180 degrees by loosening the screw 17, and then the screw 17 is tightened again and the plate 8 is pulled up. can be easily connected to the load side by being brought into contact with the contact piece 23.

At the same time, it can be confirmed from the position confirmation window hole 19b that the surge suppressor 15 is connected to the load side.

When the plate 8 is as shown in FIG. 2 or when the plate 8 is not in a normal state, the contact of the limit switch 28 is connected to the interface of the breaker device 1 so that the breaker cannot operate. It may be inserted into the lock circuit.

As described above, according to the present invention, the breaker and the surge suppressor are integrated, and the connection between the main circuit bus and the breaker can be maintained even during withstand voltage tests or when changing the connection of the surge suppressor. It can be done without having to separate it, and since the breaker and surge suppressor can be integrated, cubicles, etc. can be made smaller. Also, it is easy to check the connection device of the surge suppressor, so there is no possibility of erroneous operation. This has the effect of eliminating the problem.

[Brief explanation of the drawing]

Figures 1A, B, and C show one embodiment of the present invention; Figure 1A is a side view, Figure 1B is a front view, and Figure 1C is a partially omitted plan view. , FIGS. 2 to 6A, B are enlarged views of the parts II, III, IV, and V shown in FIG. 1A. 1... Vacuum breaker, 2... Vacuum breaker, 4, 6... Connection conductor, 5, 7...
...Terminal, 8...Plate, 13...Ground bus bar, 14...Ground conductor, 15...Surge suppressor, 16... ...Mounting conductor, 18...
...Position indicator, 19a, 19b...Window hole for position confirmation, 20. 22...Contact piece, 2
1...Contact mechanism, 23...Grounding contactor, 24...Grounding plate.

Claims (1)

[Scope of utility model registration request] A breaker device that is detachably attached to a main circuit busbar installed in a housing such as a cubicle; a plate body that is attached to the bottom of the breaker device and shaped so that it can be bent from a predetermined point; A grounding conductor formed in the form of a plate and in contact with the grounding part of the casing, one end rotatably contacting the grounding conductor, and the other end attached to the power supply side or load side of the main circuit bus bar. 1. A mounting device for a surge suppressor, comprising: a surge suppressor; and a window hole drilled in the plate to confirm the mounting position of the surge suppressor.