MX2007002699A - Eight-connection second generation ground bar (ep-bt2g8c). - Google Patents

Abstract

The present invention refers to an improved bar best know as 2G8-connection Ground Bar (EP-BT2G8C), which concentrates all and each of the grounded conductors pertaining to different equipments and electric housings in order to equalise the potential difference and finally lead and discharge it to the ground mesh. The purpose of the present invention is to provide a type of bar totally different from those currently available on the market since it has a multifunctional construction, which main characteristic is that it reduces short, half and long term costs; on the one hand, the reproduction cost of the bar is low as the raw material thereof is cheaper than copper, on the second hand, said raw material is not as attractive as copper is to thieves, thereby providing excellent results and reducing risks as the joints are not weather exposed but located at the inner portion of the bar, which has a stainless steel cover for preventing external agents from entering.

Description

IMPROVEMENTS IN GROUNDING BAR BACKGROUND OF THE INVENTION At present, land systems for telecommunications are made up of conventional grounding rods, which could be detailed as: 100% solid copper bars, 12 inches long, 4 inches wide and with a thickness ¼ inch, with 8 pairs of holes, all 3/8 of an inch in diameter, through which the different equipment and / or cabinets are landed to the ground mesh, and two side holes of 9/16 inches in diameter, which are used to fix the bar. (Fig. 1) These copper grounding rods are often exposed to the weather and therefore are attractive for crime, because they are easy to steal from radio bases or telecommunications facilities.

As can be glimpsed, the current grounding bar is very expensive since its main component is copper, which in international markets has had a substantial increase, but even more expensive, with its large-scale theft and with the damages that can be caused to the telecommunications equipment in the radio bases or power stations, in the time that the area is left unprotected due to its theft, that is to say during the lapse of time that implies the new installation of the bar.

In order to reduce theft, the development of the present bar was considered, which is intended to be protected by means of the present application, since it is a device, which does not use copper, its dimensions are precisely adjusted to the connection needs, not to mention that its conformation requires fewer parts and as a system, it is just as efficient as the one currently used electrically.

DESCRIPTION OF THE INVENTION The characteristic details of this innovative 2G Earth Bar 8 connections (EP-BT2G8C), are clearly shown in the following description and in the accompanying drawings, which have reference signs to indicate the parts and figures shown.

Figure 2 is a conventional (isometric) perspective exploited of the bar.

Figure 3 is a side perspective of the bar, (side cut) Figure 4 is a front perspective of the bar.

Figure 5 is a top perspective of the bar.

Figure 6 is an isometric perspective armed front of the bar.

Figure 7 is a back exploded isometric of the bar.

With reference to said figures, this bar has in its front part sixteen 3/8 inch male-hole holes, with a horizontal separation of 29.74 mm and 24.72 mm vertically between its centers (No. 2), entering each of them. These holes, an oppressive screw, have stainless steel 3/8 inch by 3/8 inch long (No. 4), whose purpose is to hold the grounding conductors. In the back part has three dovetail slides (No. 7), where you can insert the trapezoidal strips (No. 8), which will serve for the vertical assembly of an additional bar, or, serve as a channel for the placement of the insulators and to be fixed to the wall or structure. It is also a characteristic feature of the design that instead of the dovetail slides, there are 6 holes drilled in the back, which allow the direct connection of three insulators (No. 9). The bar counts on its top with eight transverse holes (No. 1), through which the grounding conductors will be introduced, being the case that the first transverse hole from left to right, had a stainless steel cover, thus avoiding the torque Galvanic (No. 6), in addition to that said orifices will have an insulating plug, specially designed to prevent the introduction of water and / or any other agent. (No. 5) The construction of the bar is based on a single piece of aluminum or galvanized steel, as shown in figures 2 and 3, with a length of 241.30 mm, a width of 50.75 mm and a thickness of 25.04 mm , which is obtained after carrying out the cuts and perforations through a milling machine and other instruments.

The working efficiency of the bar resides in the flexibility to increase the number of ground connections coming from different equipment or frames, as well as the null introduction of water by dredging and external agents such as corrosion and oxidation, caused by the environment, in addition to being manufactured in a suitable material such as aluminum or galvanized steel, reduce their production costs and significantly minimizes theft.

The bar in question works in the following way: When going down to this bar each and every one of the grounding conductors of the different equipment and electrical racks, it is in charge of concentrating and equalizing the potential difference, to finally channel it and download it to the mesh of lands.

The design and material of the bar are largely, the novelty of this, because in the first place, its dimensions are adjusted to the needs of the user, since in the first instance can cover from one and up to sixteen sunsets to ground, because as already mentioned, through a trapezoidal strip it is possible to assemble a vertical bar with the same characteristics.

Continuing with the functionality and / or operability that represents the assembly of another bar in its upper or lower parts through its trapezoidal strips, these bars can not only be enlarged and / or expanded, but also adjust to small spaces, difficult access, it is also characteristic of the design that instead of the dovetail slides there are 6 perforated holes (No. 9) that allow the direct connection of the insulator.

Another of the benefits of this novel device, is that by the materials that are formed, its corrosion and oxidation is minimized, before its exposure to the environment, which optimizes the conductivity of energy.

On the other hand, this new device has the quality of having a faster connection, since it does not require a specialized tool (mechanical or compression terminals, insulating sheaths), since the stainless steel oppression screw with head seal, allows a simple and quick installation.

Finally, since it is made of aluminum or galvanized steel, it will substantially reduce its cost in the market, since the metal used is of lower cost than copper, which in turn results in the device not being attractive to delinquency, because this device replaces 100% of the copper that the conventional bar was made of.

The bar for its shaping materials that can be made of aluminum or galvanized steel, have defined values for electrical conduction and thermal shock, this information is concentrated in the Onderdonk equation and is highly used in the electrical industry as part design parameters intended to drive current. These values determine if a piece of metal is capable of conducting an indicated value of electric current in a set time. Therefore, based on statistical data by CIGRE (International Conference on High Voltage Electrical Systems), France has defined values and failure times for atmospheric discharges or lightning. These ranges are what we have used to assess the conditions to which said bar could be exposed, since many times it will be outdoors and therefore be able to be the object of a direct lightning strike.

Having said the foregoing, we establish that: In 95% of the lightning strikes we have a value of 15 kilo amperes in a time of 0.000001 seconds, an aluminum cross section of 3.31 mm2 is required, and for the steel case a cross section of 1 1 .15 is required. mm2 In 50% of the lightning strikes we have a value of 30 kilo amperes in a time of 0.000075 seconds, an aluminum cross section of 12.84 mm2 is required, and for the case of steel a cross section of 35.27 mm2 is required.

In 5% of the lightning strikes we have a value of 80 kilo amperes in a time of 0.0002 seconds, an aluminum cross section of 55.90 mm2 is required, and for the case of steel a cross section of 153.60 mm2 is required. Therefore we can establish that for all the aforementioned cases the design of the bar in aluminum or galvanized steel have and comply with the appropriate cross section, without presenting damage in its electrical and mechanical structure.

Therefore we can establish that for all the aforementioned cases the design of the bar in aluminum or galvanized steel has a cross section of 6000 mm2, and meets and passes with the required cross section, without presenting damage to its mechanical structure.

Claims (5)

EIVINDICATIONS Having sufficiently described my invention, I consider as a novelty and therefore claim as my exclusive property, what is contained in the following clauses:

1 . Earth bar 2G 8 connections (EP-BT2G8C), which is formed by a bar of aluminum or galvanized steel, which based on its design allows the vertical assembly of another bar, housing inside the conductors efficiently and safely, because the conductors are fastened to the stainless steel oppression hammer with a halo head, which allows a simple and quick installation, in addition to the plug to prevent water filtration, among others.

2. Earth bar 2G 8 connections (EP-BT2G8C), which is characterized because as claimed in the first clause, has an excellent concentration and voltage regulation, to finally channel it and download it to the earth grid.

3. Ground bar 2G 8 connections (EP-BT2G8C), which is characterized because as claimed in the first clause, both inside and outside, is made of aluminum or galvanized steel, which minimizes significantly its corrosion, oxidation, but especially its theft.

4. - Earth bar 2G 8 connections (EP-BT2G8C), which is characterized because as claimed in the first clause, has trapezoidal channels and strips, which allow its extension vertically.

5. - Earth bar 2G 8 connections (EP-BT2G8C), which is characterized because as claimed in the first clause, the hole through which lowers the current to ground, enjoys a stainless steel cover, thereby eliminating any possibility of galvanic torque, as well as the entry of external agents such as water, thanks to its specially designed plug. RESU IN THE INVENTION This invention relates to an improved bar, which I have had as owner as 2G Earth Bar 8 connections (EP-BT2G8C), which acts concentrating each and every one of the grounding conductors of the different equipment and electrical racks , to later equalize the potential difference, and finally channel it and download it to the land grid. The object of this invention is to provide a type of bars totally different from those currently on the market, thanks to a multifunctional construction, whose main feature is that it reduces costs in the short, medium and long term, since its production cost is lower , because in the first instance its input is much less expensive than copper, and secondly, it is not attractive as copper for crime, giving excellent results and minimizing risks, since the joints are not exposed to the elements, but inside of the bar, which has the stainless steel cover, avoiding the access of external agents.