JP3110082B2 - How to connect electrical equipment to the bus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting electric equipment such as a switch and disconnector to a bus arranged in a cabinet, and more particularly to a method of connecting the electric equipment to a bus. The present invention relates to a method for connecting an electric device to a bus to prevent damage to the bus when the bus is inserted.

[0002]

2. Description of the Related Art Electrical devices such as switches and disconnectors are fixed to angles provided in a cabinet with bolts and the like, and distribution buses are formed by male and female coupling between a bushing and a molded bus bar arranged in the cabinet. It is connected to the.

[0003] Conventionally, when an electric device is connected to a mold bus, an operator holds the mold bus while another operator holds the electric device and inserts the bushing into the mold bus manually. It is done by.
When the connection is completed in this way, the electric device is fixed to the angle, and the connection work of other circuits is performed in the same manner.

[0004]

However, according to the conventional method of connecting electric equipment to the bus bar, a considerable force is required for inserting the bushing due to frictional resistance and internal air resistance, and the small space inside the cabinet is small. Since it is difficult to work in a space, manual insertion is very difficult. In addition, since the three-phase busbar and the bushing are aligned while the operator holds the electric device and bears the weight, it is difficult to make fine adjustments by visual inspection. There is a risk of damaging the subject.

Accordingly, an object of the present invention is to provide a method for connecting an electric device to a bus bar, which improves the workability at the time of insertion.

Another object of the present invention is to provide a method of connecting an electric device to a bus, which can prevent damage to the mold bus during insertion.

[0007]

The present invention achieves the above objects.
In order to achieve, the bus bar placed at the top of the cabinet,
An electrical connection for the bushing of electrical equipment such as switches and disconnectors
In the method of connecting a pneumatic device to a bus bar, a gondola is locked to one end of an outer wire cable, and one end of a wire exposed from one end of the outer wire to a predetermined fixing member disposed at a predetermined height of the cabinet. And lock
Said electrical device to said gondola mounted in a predetermined posture, the
Forward in the direction of the one end of the wire with the outer locked
And the gondola, which is engaged with the outer by sliding on serial wire is moved in the direction <br/> of the one end of the wire, the electrical equipment of the bushing of the electrical apparatus and to be inserted into the bus Is provided with a connection method to the bus.

[0008]

[Action] The present invention is placed on the electrical equipment to the gondola, the outer
On the wire in the direction of one end of the locked wire
Moving the gondola by until the connection portion of the mold bus, since the bushing of the electrical apparatus is to be connected to the mold bus, the operator may raise the easily electrical device only by operating the winch or the like It is possible to work easily without requiring labor (manpower). As a result, the worker can concentrate on the insertion work (alignment work between the bushing and the mold busbar), and by performing the fine adjustment at the time of the insertion visually, the forcible insertion of the bushing can be prevented, and the mold busbar (outer sheath) can be prevented. ) Can be prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for connecting an electric device to a bus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention.
An operation example of connecting the disconnector 30 is shown. That is, the angle 11 to which the disconnector 30 is attached is
0 is fixed to both sides by welding and the angle 1
1, a wire hook 33 is hooked and fixed. A gondola 31 is suspended from a wire hook 33 via a wire cable 40. In the gondola 31, a disconnector 30 includes a busbar side bushing 30A and a molded busbar 20.
Are placed in such a manner that the connection portions 21 of the connection portions 21 face each other. At this time, the gondola 31 is
0B is accommodated and supported, and the front and rear of the disconnector 30 are supported by both edges, so that the disconnector 30 can be mounted in a well-balanced manner. The other end of the wire cable 40 is connected to a winch (not shown) or the like.
When 0 is pulled, the gondola 31 moves toward the connecting portion 21 of the mold bus 20. A plate-shaped busbar support (described later) that presses the mold busbar 20 from above to prevent the mold busbar 20 from jumping up when the bushing is inserted, between the dew condensation prevention plate 12 provided at the upper part of the cabinet 10 and the mold busbar 20. ) Is inserted.

FIG. 2 shows a wire mechanism for moving the gondola 31 upward. The wire cable 40 is a wire 43
Is covered with an outer 41, and the wire 4
Reference numeral 3 is drawn out from the lead-out portion 42 of the outer 41 by a predetermined length. On the other hand, as described above with reference to FIG. 1, the wire hook 33 is hooked and fixed to the angle 11 of the cabinet 10 using the hook 33a, and the wire 43 is inserted into the wire hook 33b provided at the tip. The stopper 4 fixed to the tip of the wire 43
4 is locked to the wire hook 33. Outer 4
The fixing holes 34 provided at both ends of the gondola 31 are inserted into the lead-out portions 42 provided at the distal ends of the gondola 31. The gondola 31 is fixed to the tip of the. The gondola 31 includes a groove 35 surrounding the cable-side bushing 30B of the disconnector 30 and an outer edge 36 that expands from the groove 35 and contacts the front and rear of the disconnector 30.
An insertion groove 37 for guiding the wire 43 is provided at the upper part of the upper part. Although the mold bus 20 is not shown here, the above-mentioned plate-shaped bus support is inserted between the mold bus 20 and the dew condensation prevention plate 12. The busbar support is provided with a dew condensation prevention plate 12 from the tip of the cabinet 10.
And a busbar holding plate formed so as to conform to the external shape (flat busbar, round busbar) of the mold busbar 20 and fitted between the support bracket 51 and the mold busbar 20. 53, support bracket 51 and busbar holding plate 5
3 is constituted by an adjusting plate 52 inserted as needed.

A procedure for connecting the disconnector 30 to the mold bus 20 according to the present invention will be described below.

First, the hook 33a of the wire hook 33 is hooked at a desired position of the angle 11 (a horizontal position corresponding to a circuit to which the disconnector 30 is to be connected), and the wire hook 33 is fixed to the angle 11. I do. Then, the wire 43 of the wire cable 40 is inserted into the fixing hole 34 and the insertion groove 37 of the gondola 31 and the outer 41 is inserted.
Of the wire 43, the stopper 43 is hooked on the wire locking portion 33 b of the wire hook 33, and the wire 43 is engaged with the wire hook 33. To stop. Next, the support metal fittings 51 are fitted from the front end of the gabinet 10 to the rear end of the dew condensation prevention plate 12, and a bus holding plate 53 is provided between the support metal fittings 51 and the mold bus 20, and if necessary (the mold bus). The adjustment plate 52 is inserted (when the pressing of the lever 20 is loose). Thereafter, the disconnector 30 is placed on the gondola 31 in a predetermined posture, and the other end of the wire 43 is pulled by a winch or the like. As a result, the outer 41 moves toward the distal end of the wire 43 locked by the wire hook 33, and accordingly,
The gondola 31 fixed to the tip of the outer 41 rises toward the mold bus 20. When the disconnector 30 is raised to the vicinity of the connection opening 21 of the mold bus 20, the operator visually aligns the three-phase busbar bushing 30 </ b> A of R, S, and T with the connection opening 21. At this time, since the worker is working without holding the disconnecting switch 30, fine adjustment can be made to the alignment. And
When the positioning is completed, the gondola 31 is further lifted by pulling the other end of the wire 43, and the busbar-side bushings 20 are simultaneously inserted into the connection openings 21 of the mold busbar 20 in three phases, thereby completing the connection operation.

As described above, the worker can use the wire hook 33.
After setting the wire, locking the gondola 31 to the wire cable 40, locking the wire 43 to the wire hook 33, and inserting each holding member, the operator only needs to operate the winch or the like. Since the work can be easily performed without much labor, and the worker can concentrate on the insertion work, the bushing-side bushing 30A can be properly inserted and the mold busbar 20 can be prevented from being damaged. Can be.

In the above embodiment, the mold bus 20 is
For example, although the case where it is supported by another electric device has been described, a connection method when the mold bus 20 is not supported will be described below.

FIGS. 3 (a) and 3 (b) show an example of an operation for connecting a mold bus bar 20 and a disconnector (not shown) in a cabinet 10 for three circuits. A wire hook 33 is fixed to the first circuit and the third circuit in FIG. 2B, and the unsupported mold bus 20 is placed on the wire hook 33. When the mold bus 20 is placed on the wire hook 33 in such a state, the disconnector is connected to the mold bus 20 from the second circuit.

Next, a method of connecting a disconnector to the mold bus 20 will be described with reference to FIG. In FIG. 4, portions corresponding to those in FIG. 2 are denoted by the same reference numerals and symbols, and duplicate description is omitted. However, instead of using the wire fitting 33, the bus bar pressing plate 55 is used as a fixing member for the wire 43. I have. That is, the bus bar pressing plate 55 is placed on the molded bus bar 20 of the second circuit, and the Y-shaped wire 56 and the wire 43 are connected by the locking of the wire locking portion 57 and the stopper 44.
Similarly to the connection method described above, the other end of the wire 43 is pulled by a winch to raise the gondola 31. At this time, Y forming an isosceles triangle
Since the pulling force of the wire 43 is evenly applied to the holding plate 55 by the V-shaped wire 56, the balance of the bus holding plate 55 on the mold bus 20 can be improved.
When the disconnector is connected to the mold bus 20 in the second circuit, the mold bus 20 is supported by fixing the angle 11 of the disconnector, so that the connection between the first and third circuits is performed by the method shown in FIG. Done in

In the above embodiment, the connection of the disconnecting switch has been described. However, the present invention is not limited to this, and can be applied to a switch or other electric equipment.

[0019]

As described above, according to the method for connecting an electric device to a bus bar according to the present invention, a gondola is locked to one end of an outer wire cable and a predetermined wire disposed at a predetermined height of a cabinet. One end of the wire exposed from one end of the outer is locked to the fixing member, the electric device is placed on the gondola in a predetermined posture, and the outer wire is locked.
Since the gondola locked to the outer was moved toward one end of the wire by sliding on the wire in the direction of one end, the bushing of the electric device was inserted into the bus bar. Workability can be improved, and damage to the mold busbar during insertion can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a gondola and a wire cable in the first embodiment.

FIG. 3 is an explanatory view showing a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a relationship between a gondola and a wire cable in a second embodiment.

[Explanation of symbols]

10 cabinet 11
Angle 20 Mold busbar 30
Disconnector 31 gondola 33
Wire hook 40 Wire cable 41
Outer 42 Outgoing part 43
Wire 44 Stopper 55
Busbar holding plate

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tomoaki Goto 1-3-1 Uchisaiwai-cho, Chiyoda-ku, Tokyo Inside Tokyo Electric Power Company (56) References JP-A-3-261310 (JP, A) JP-A Sho-59 198808 (JP, A) Fully open sho 63-7902 (JP, U) Really open sho 63-127206 (JP, U) Fully open sho 60-59709 (JP, U) Really open sho 58-78709 (JP, U (58) Field surveyed (Int. Cl. ⁷ , DB name) H02B 1/20 H02B 1/30-1/32 H02B 3/00

Claims (3)

(57) [Claims] 1. A method of connecting a busbar of an electric device such as a switch and a disconnector to a busbar arranged at an upper part of a cabinet, wherein the gondola is locked to one end of an outer wire cable. At the same time, one end of the wire exposed from one end of the outer is locked to a predetermined fixing member arranged at a predetermined height of the cabinet, and the electric device is placed on the gondola in a predetermined posture, and the outer is placed. The direction of the one end of the locked wire
The gondola locked to the outer by sliding on the wire to the one end of the wire.
A bushing of the electric device is inserted into the bus by moving the bush in the direction . 2. The method of connecting an electric device to a bus bar according to claim 1, wherein said predetermined fixing member is a wire hook which is hooked and fixed to an angle of said cabinet. 3. The predetermined fixing member is a bus bar holding plate placed on the bus bar, and the bus bar holding plate has a Y-shaped cable at both ends that detachably engages with one end of the wire. The method for connecting an electric device to a bus according to claim 1.