JPH0584002U - High voltage cutout used for construction transformer - Google Patents

Abstract

(57) [Summary] [Structure] The transformer 1 is directly attached to the side wall 1a of the transformer A in a vertical state, and the upper portion of the main body insulator 2 is formed so as to project toward the lid insulator 30 side to provide the eaves portion 12. [Effect] Since the cutout is vertically attached to the side wall 1a of the transformer A, the contact pressure of the fixed electrode against the contact blade of the current limiting fuse resists the weight of the lid insulator 30 equipped with the current limiting fuse. Since it is not necessary, the contact pressure can be the minimum required. Therefore, at the time of opening / closing, it suffices to open / close against this minimum contact pressure, and the opening / closing operation is easy. Further, since the eaves portion 12 is formed,
Even if the cutout is directly attached to the side wall 1a of the transformer A in a vertical state, rainwater does not intrude into the cutout from the opening / closing portion of the main body insulator 2 and the lid insulator 30 by the eaves portion 12. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a high voltage cutout used for a construction transformer.

[0002]

[Prior Art]

 Conventionally, by-pass vehicles that bypass construction blackout sections and transformer vehicles that secure power to low-voltage customers in construction sections have been used in distribution line construction. This type of transformer vehicle is equipped with a transformer and a cutout switch that protects the primary side of this transformer, and a box-shaped cutout switch is provided near the transformer against the support frame and the main body insulator. It was fixed with the mounting bolts provided on the back.

[0003]

[Problems to be solved by the device]

 However, in consideration of the loading space in this type of transformer car, the cut-out switch can be operated onboard rather than by installing the body insulator diagonally at an angle that can be seen in normal pole mounting. The vertical arrangement of the main body insulator, which also takes into consideration the characteristics, is desired.

Further, since it is for construction, it is also planned to be used in rainy weather, so there is a risk that rainwater may enter the inside of the cutout. Therefore, in the present invention, it is easy to open and close, the holding force of the fuse and the fixed electrode is the minimum, and in addition, a cutout for construction that prevents rainwater from entering the cutout from the opening and closing part of the lid is provided. The purpose is to do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is characterized in that it is directly attached to a side wall of a transformer in a vertical state, and an upper portion of a main body insulator is formed to project toward a lid side to provide an eaves portion.

Further, it is intended that a rib be formed on the upper portion of the main body insulator so as to extend along the end of the eaves portion.

[0007]

[Action]

 In the present invention, since the cutout is vertically attached to the transformer side wall, the opening / closing operation is easy, and the cutout is formed so that the cutout is vertical to the side wall of the transformer. Even if it is attached directly with, rainwater will not enter the inside of the cutout from the opening and closing part of the main body insulator and lid by this eaves part.

Further, when the rib is provided along the end portion of the eaves portion, it is possible to more reliably prevent rainwater from entering the inside of the cutout from the opening / closing portion of the main body insulator and the lid.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a main insulator 2 of a cutout B is vertically attached to a side wall 1a of a case 1 of a transformer A. A mounting flange 3 is formed on a rear surface 2a (left surface in FIG. 1) of the main body insulator 2, and a stud bolt 4 is planted on a side wall 1a of the case 1 of the transformer A. A nut 31 is screwed to the stud bolt 4 via a pair of mounting fittings 5 provided so as to cover the mounting flange 3. Then, it is attached and fixed to the side wall 1a of the case 1 of the transformer A.

As shown in FIGS. 2 and 4, the mounting member 5 is L-shaped in the front and has through holes 6 through which the stud bolts 4 are inserted at both ends and corners. The outer peripheral edges are bent and formed. The ends of the two mounting members 5 are arranged so as to overlap each other and surround the mounting flange 3 of the main body insulator 2.

Further, a projecting piece 5 a is projected from one side of the elongated part of each mounting member 5, and is fitted and positioned in recesses 2 c recessed in both sides of the main body insulator 2. A mounting hole 7 is formed in the side wall 1a of the case 1, and a penetrating protrusion 8 is formed in the back surface 2a of the main body insulator 2 so as to be inserted into the case 1 through the mounting hole 7. A metallized layer 9 is formed on the outer periphery of the base end of the penetrating protrusion 8, and an insulating film 10 is formed on the upper surface of the metallized layer 9. A packing 11a and an O-ring 11b are interposed between the side wall 1a of the case 1 and the main body insulator 2.

On the other hand, as shown in FIGS. 1 and 2, the upper portion of the front surface 2b of the main body insulator 2 is formed so as to project forward to form an eaves portion 12, and an upper surface of the eaves portion 12 is Ribs 13 are formed along the ends.

As shown in FIGS. 1 and 3, the main body insulator 2 is provided with a power source side electrode chamber 15 and a load side electrode chamber 16 defined by a partition wall 14. A nut material 17 is planted on the inner bottoms of the two electrode chambers 15 and 16, and a connection piece 19 and a fixed electrode 20 are detachably fixed to the nut material 17 with bolts 21. The connecting piece 19 is bent into an L-shape, and arc-extinguishing chambers 22 are attached to the connecting piece 19 in both electrode chambers 15 and 16 by screws 23.

A connecting portion 2 d is provided in a cylindrical shape on the upper portion of the main body insulator 2, and a connecting conductor 26 is embedded between the connecting portion 2 d and the power supply side electrode chamber 15. A female electrode 24 is attached to the upper end of the connecting conductor 26, and an insulating cap 25 is placed on the upper opening of the female electrode 24. The lower end of the connecting conductor 26 is connected to the connecting piece 19 of the power source side electrode chamber 15 by a screw 27. Then, a male screw 2e is formed on the outer periphery of the base end of the connecting portion 2d so that it can be screwed with a connecting cable (not shown).

An electrode 28 is implanted at the tip of the penetrating protrusion 8, and the electrode 28 and the fixed electrode 20 in the load side electrode chamber 16 are connected via a connecting conductor rod 29. The electrode 28 is connected to a transformer (not shown) housed in the case 1.

On the other hand, a lid insulator 30 (shown by a chain double-dashed line in FIG. 1) is rotatably attached to the front side of the body insulator 2 by a shaft 32, and the lid insulator 30 is fixed to the inside of the lid insulator 30. A current limiting fuse (not shown) having a pair of contact blades for connecting or disconnecting the electrodes 20 is detachably mounted.

In this embodiment, since the cutout B is vertically attached to the case 1 of the transformer A, the weight of the lid insulator 30 having the current limiting fuse on the fixed electrode 20 is heavy. There is no contact pressure, and the minimum contact pressure required for energization can be achieved. Further, since the current limiting fuse and the fixed electrode 20 are in contact with each other with the minimum necessary contact pressure, the lid insulator 30 can be easily opened and closed.

Further, since the eaves portion 12 is formed, even if the main body insulator 2 of the cutout B is mounted perpendicularly to the side wall 1a of the case 1 of the transformer A, the main body insulator 2 and the lid insulator are attached. Rainwater does not enter the cutout B from the opening and closing part with 30. Further, since the ribs 13 are formed, rainwater does not flow to the opening / closing side of the main body insulator 2 and the lid insulator 30, and the rainwater is more reliably prevented from entering the cutout B. ..

It should be noted that the present invention is not limited to the above-mentioned embodiment, and can be arbitrarily modified within a range not departing from the spirit thereof.

[0020]

[Effect of the device]

 As described above in detail, in the invention, it is easy to open and close, and the contact pressure between the fuse and the fixed electrode is the minimum necessary for energization. In addition, rainwater enters the cutout inside from the opening and closing part of the lid. There is an excellent effect that there is no.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is also a front view of the main body insulator.

FIG. 4 is a front view of a mounting member.

[Explanation of symbols]

1a Side wall, 2 Main body insulator, 30 Lid body, 12 Eaves part, 13 Rib, A transformer.

Continuation of the front page (72) Creator Toshiaki Fujita No. 1 Upper Small Needle, Inuyama City, Aichi Prefecture Energy Support Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. The eaves part (12) is formed by directly mounting the main body insulator (2) on the side wall (1a) of the transformer (A) in a vertical state and projecting the upper part of the main body insulator (2) toward the lid (30). Cutout for construction, which is characterized by the provision of. 2. An eaves portion (1) is provided on an upper portion of the main body insulator (2).
The construction cutout according to claim 1, wherein a rib (13) is formed along the end of (2).