WO2021201798A1

WO2021201798A1 - Rotational outlet box current receiving apparatus for busbar systems

Info

Publication number: WO2021201798A1
Application number: PCT/TR2021/050133
Authority: WO
Inventors: Vedat Voski
Original assignee: Eae Elektrik Asansor Endustrisi Insaat Sanayi Ve Ticaret Anonim Sirketi
Priority date: 2020-03-30
Filing date: 2021-02-16
Publication date: 2021-10-07

Abstract

The invention relates to a rotational outlet box current receiving device (A) for easier and safer installation of the outlet box (4) that gives output current from the socket (3) point in electrical distribution systems called busbars under difficult field conditions.

Description

ROTATIONAL OUTLET BOX CURRENT RECEIVING APPARATUS FOR BUSBAR

SYSTEMS

Technical Field

The invention relates to a rotational outlet box current receiving apparatus for busbar systems.

In particular, the invention relates to a rotational outlet box current receiving apparatus in electrical distribution systems called busbars for easier and safer installation of the outlet box that gives output current from the socket point under difficult field conditions.

Background of the Invention

In today's energy distribution systems, modular compact conductors called busbar are used. Each conductor called busbar is more preferred because it has structures with a high current carrying capacity.

In the mentioned electricity distribution systems, outlet boxes are positioned to receive current at points where electricity is needed. The mentioned outlet boxes are connected with the current receiving sockets located on the busbar to ensure that the energy is drawn to the desired place. Inside the mentioned outlet boxes, there are parts that perform various functions such as cable connections, socket point contacts, breaker or disconnector, opening and closing mechanisms.

The aforementioned energizing sockets both mechanically fix the busbar conductors and outlet boxes and provide electrical connection.

In the current technique, the installation of the outlet boxes to the current receiving sockets is carried out by pulling from this area. In the mentioned method, great mechanical forces have to be applied during assembly. Mechanical forces applied with high intensity both make the assembly process difficult and cause the mentioned box and / or socket to be damaged from time to time.

It is not very reliable if the current receiving contacts in the said outlet boxes enter their sockets in the socket at a right angle and distance. Proper assembly is up to the skill and experience of the installer.

Incomplete or improper installations, on the other hand, cause a gap between the current receiving contacts and the socket sockets, which causes arcs to occur.

Unwanted arcs also endanger human health and cause the mentioned socket and outlet box to be damaged and shorten the life.

Since the box is not hung somewhere during the assembly of the outlet box in the socket area of the mentioned modules, the weight of the box that forces it to move downward makes the assembly more difficult. Since the parts that fulfill various functions such as cable connections, socket point contacts, breaker or disconnector, opening and closing mechanisms are located in the said outlet boxes, the total weight increases and applies very large forces in the direction of gravity.

In current applications, the outlet boxes are aligned vertically to the socket areas and installed. During this process, the weight of the box and the force of the spring contacts into the conductor is a difficult operation for the practitioner.

Especially in the construction site environment and narrow installation gaps, it is very important to be able to install the outlet boxes comfortably and safely.

Therefore, the applicator should not be forced in terms of the box weight and the forces to be applied to the spring contacts. In the old techniques, it is tried to be easier to install the box by increasing the contact opening and decreasing the spring pressure force. However, this means some compromise on contact pressure, which is very undesirable.

In the European patent application which is numbered EP3078091B1, the subject matter relates to “The invention relates to an outlet box which gives output current through the power point of an electric distribution system with busbars and allows the replacement of circuit components on the circuit in the safest manner possible, without cutting off the electric current.”

In the said application, an outlet box is disclosed that allows the outlet box circuit elements to be changed without powering off.

In the European patent application which is numbered EP0555665B1 the subject matter relates to “In the case of outlet boxes, especially in busbar trunking systems, no arc may be produced during separation of the contact devices. Such outlet boxes are provided with a first contact device for electrical connection of the busbars in the busbar duct, and with a second contact device which acts in such a manner that the production of the contact and the separation of the contact of the first contact device can necessarily take place only when no current is passed. The aim is furthermore to construct the attachment and locking device of the outlet box to be capable of handling as easily as possible and to be as space-saving as possible in order to utilise the installation space well. This is achieved in that the attachment and locking device consists of a shaft which can rotate about the longitudinal axis of said device and has an attachment and locking element, which corresponds to the busbar duct, and a blocking part which corresponds with the second contact device.”

In the said application, an outlet box mounting assembly is disclosed in order to prevent arcing.

In the European patent application which is numbered EP0391100B1 the subject matter relates to “The invention relates to an outlet box for a busbar system, having connecting pieces which are led out of a housing. During installation with busbar systems, the connecting pieces engage between the busbars and are conductively connected thereto by means of a clamped connection. In order to minimise the risk of electric shocks during installation, the invention is intended to offer a solution in which the connecting pieces are covered, so far as possible, to protect against being touched. This cover is formed by a hose-like covering device which is arranged on the outlet box in such a manner that the connecting pieces are completely covered except for the side located in the installation direction. It is particularly advantageous for the covering device to be designed in the form of a folding bellows which has a fixed frame on the open end. A laterally arranged clip holds the covering device in the unfolded state. During installation of an outlet box on a busbar system, the covering device rests with the frame initially on the busbar system and shortens itself into the busbar system, in accordance with the movement of the connecting pieces.”

In the said application, the outlet box is disclosed, which is covered with a hose-like coating device in order to prevent leakage electric shock.

For the reasons mentioned above, a new rotational output current receiving apparatus is needed for busbar systems.

Purpose of the Invention

Based on this aspect of the technique, the purpose of the invention is to introduce a new rotational output current apparatus for busbar systems that eliminates the present disadvantages.

Another purpose of the invention is to provide a structure that allows the heavy outlet boxes to be mounted more easily and securely in difficult field conditions.

Another purpose of the invention is to provide a structure that does not compromise contact pressure since there is no need to reduce the spring force.

Another purpose of the invention is to provide a structure that significantly reduces the force of the contacts entering the conductor bar and the force in the direction of gravity exerted by the weight of the box. Another purpose of the invention is to present a structure that allows for an easier assembly in narrow spaces in the field.

Another purpose of the invention is to provide a structure that eliminates the need for expertise and experienced personnel for the assembly of the tap-off box.

Another purpose of the invention is to provide a structure that allows assembly by applying a lower force.

Another purpose of the invention is to provide a structure that prevents arcs that may occur due to improper assembly.

Another purpose of the invention is to present a structure that prevents accidents and injuries caused by arcs.

Another purpose of the invention is to provide a structure that prevents the outlet box and / or socket damage caused by arcs and prolongs its life.

Explanation of Figures

Figure - 1 A perspective view of the busbar structure subject to the invention Figure - 2 Side section view of the busbar structure subject to the invention Figure - 3 A disassembled view of the outlet box in the busbar structure, which is the subject of the invention.

Figure - 4 Another disassembled view of the outlet box in the busbar structure, which is the subject of the invention.

Figure - 5 Another disassembled view of the outlet box in the busbar structure, which is the subject of the invention.

Figure - 6 Another disassembled view of the outlet box in the busbar structure, which is the subject of the invention.

Figure - 7 A representative view of the assembly of the outlet box in the busbar structure, which is the subject of the invention. Reference Numbers

A - Rotational Outlet Box Current Receiving Apparatus O- Rotation Axis F1- User’s Force

F2- The Force That Makes Contacts to Enter L1- Distance of User’s Force to Rotation Axis

L2- Distance of The Force That Makes Contacts Enter to Rotation Axis M- Moment

1. Busbar Body

2. Conductor Bar

3. Socket

4. Outlet Box

5. Outlet Box Contacts

6. Rotation Arm

7. Rotation Hole

8. Clutch Apparatus

Detail Description of the Invention

In this detailed description, innovation according to the invention is explained by examples which will not have any limiting effect on a better understanding of the subject.

The invention is a rotational outlet box current receiving apparatus (A) that allows the outlet box (4) to be mounted more easily and safely under difficult field conditions said outlet box (4) is containing parts that fulfill various functions such as cable connections, outlet box contacts (5), breaker or disconnector, opening and closing mechanisms, and which provides output current from the socket (3) formed on the busbar body (1), in electrical distribution systems that provide energy transmission through conductive bars (2) located inside the busbar body (1), characterized in that comprises; the rotation arm (6) positioned to allow the outlet box (4) to be mounted on the busbar body (1) in such a way that the socket (3) and the outlet box contacts (5) overlap and allow the weight of the said outlet box (4) to be carried to the busbar body (1), the rotation hole (7) formed on the said busbar body (1) and bearing the said rotation arm (6), the rotation axis (0) formed by the said rotation arm (6) entering the rotation hole (7) and the moment (M) created by users force (F1) decreasing by the ratio of the distance of the force that makes contacts enter (F2) to rotation axis (0) (L2) to distance of user’s force (F1) to rotation axis (0) (L1).

Figure - 1 shows a perspective view of the busbar structure subject to the invention.

Figure - 2 shows a side section view of the busbar structure subject to the invention.

Figure - 3 shows a disassembled view of the outlet box (4) in the busbar structure, which is the subject of the invention.

Figure - 4 shows another disassembled view of the outlet box (4) in the busbar structure, which is the subject of the invention.

Figure - 5 shows another disassembled view of the outlet box (4) in the busbar structure, which is the subject of the invention.

Figure - 6 shows another disassembled view of the outlet box (4) in the busbar structure, which is the subject of the invention.

Figure - 7 shows a representative view of the assembly of the outlet box (4) in the busbar structure, which is the subject of the invention.

Rotational outlet box current receiving apparatus (A) according to invention, outlet box (4) is containing parts that fulfill various functions such as cable connections, outlet box contacts (5), breaker or disconnector, opening and closing mechanisms, and which provides output current from the socket (3) formed on the busbar body (1), in electrical distribution systems that provide energy transmission through conductive bars (2) located inside the busbar body (1), the rotation arm (6) positioned to allow the outlet box (4) to be mounted on the busbar body (1) in such a way that the socket

(3) and the outlet box contacts (5) overlap and allow the weight of the said outlet box

(4) to be carried to the busbar body (1), the rotation hole (7) formed on the said busbar body (1) and bearing the said rotation arm (6), the clutch apparatus (8) formed on the right or left side of the said outlet box (4), where the rotation arm (6) is not located, allowing the said outlet box (4) to hold on the said busbar body (1) and to stand more stably, the rotation axis (0) formed by the said rotation arm (6) entering the rotation hole (7) and the moment (M) created by users force (F1) decreasing by the ratio of the distance of the force that makes contacts enter to rotation axis (L2) to distance of user’s force to rotation axis (L1).

While the said outlet box (4) with a certain weight is inserted into the socket (3) located on the busbar body (1), it is necessary to push the outlet box (4) vertically with the force that makes contacts to enter (F2). It is a difficult operation in narrow areas in this field and in areas where other installations are intense. In addition, the force that makes contacts to enter (F2) can also move the electrical distribution system.

In order to avoid the mentioned problem, the rotation arm (6) formed on the outlet box (4) enters the rotation hole (7) in the electrical distribution system and forms a rotation axis (O). The users force (F1) to the output box (4) by means of the rotation axis (O), distance of the force that makes contacts enter to rotation axis (L2) / distance of user’s force to rotation axis (L1) decreases in the amount of ratio. The movement created by the users force (F1) is the rotational movement set as the rotation axis (O) is the reference point.

The moment (M) value created by the force (F1) value applied by the mentioned users is calculated with the following formula;

M = F1 X L1 = F2 X L2 ie;

Moment (M) = users force (F1) X distance of users force (F1) to rotation axis (O) (L1) = the force that makes contacts to enter (F2) X distance of the force that makes contacts enter (F2) to rotation axis (O) ( L2)

As can be seen from the aforementioned formula, since distance of users force (F1) to rotation axis (O) (L1) is longer than the distance of the force that makes contacts enter to rotation axis (L2), the value users force (F1) is lower than the force that makes contacts to enter (F2). Said value is in the ratio L2 / L1.

In this way, the outlet box contacts (5) and the outlet box (4) can be mounted more comfortably with much less force.

Claims

1. The invention is a rotational outlet box current receiving apparatus (A) that allows the outlet box (4) to be mounted more easily and safely under difficult field conditions said outlet box (4) is containing parts that fulfill various functions such as cable connections, outlet box contacts (5), breaker or disconnector, opening and closing mechanisms, and which provides output current from the socket (3) formed on the busbar body (1), in electrical distribution systems that provide energy transmission through conductive bars (2) located inside the busbar body (1), characterized in that comprises; the rotation arm (6) positioned to allow the outlet box (4) to be mounted on the busbar body (1) in such a way that the socket (3) and the outlet box contacts (5) overlap and allow the weight of the said outlet box (4) to be carried to the busbar body (1), the rotation hole (7) formed on the said busbar body (1) and bearing the said rotation arm (6), the rotation axis (0) formed by the said rotation arm (6) entering the rotation hole (7) and the moment (M) created by users force (F1) decreasing by the ratio of the distance of the force that makes contacts enter (F2) to rotation axis (0) (L2) to distance of user’s force (F1) to rotation axis (0) (L1).

2. A rotational outlet box current receiving apparatus (A) according to claim 1; the clutch apparatus (8) formed on the right or left side of the said outlet box (4), where the rotation arm (6) is not located, allowing the said outlet box (4) to hold on the said busbar body (1) and to stand more stably.

3. A rotational outlet box current receiving apparatus (A) according to preceding claims; the movement created by the users force (F1) is the rotational movement set as the rotation axis (O) is the reference point.