CN201674198U - Low voltage cable branch box - Google Patents

Abstract

The utility model discloses a low-voltage cable branching box comprising a box body, a box cover, as well as a copper bus and a circuit breaker which are arranged in the box body. The low-voltage cable branching box is characterized by also comprising an enclosed bus system, wherein the enclosed bus system is used for enclosing the copper and the box body is a nonmetal insulated shell made from unsaturated polyester resin glass-fiber reinforced moulding compound material. By the box body made from the SMC glass-fiber reinforced polyester material, the problems such as rusting, leakage and roughness of the metal box body are solved, and the branching box effectively prevents electric shock in touch and lightning stroke, besides, the service life of the branching box can achieve thirty years; simultaneously, the copper bus in the box body is enclosed by the insulated and enclosed bus system, thus avoiding the probability of electric shock for operators, leading the operation to be safe and ensuring safe operation of power consumers; in addition, the bus system adopts shell made from the unsaturated polyester resin glass-fiber reinforced plastic, and is novel in structure and good in tightness; and the low-voltage cable branching box has the advantages of convenience for installation, low cost, attractive appearance, strong universality and flexibility and convenience in disassembly and assembly.

Description

Low voltage cable branch box

technical field

The utility model relates to a low-cable branch box, which belongs to the technical field of low-voltage power distribution.

Background technique

Low-voltage cable branch boxes are mainly used in urban residential quarters, industrial areas, industrial and mining enterprises, high-rise buildings and other power systems with three-phase AC 380/220V, 50Hz, rated current 630A and below, as cable trunk network branch wiring and branch lines Electric protection box for control and protection.

At present, the existing low-voltage cable junction boxes are generally made of metal materials. Because the low-voltage cable junction boxes are exposed to the air for a long time, the box shell is prone to paint peeling, deformation, cracking, etc., which affects the overall environment of the community. beautiful. Moreover, the bus bars of the existing low-voltage cable distribution box are installed in an open manner, and the copper bars of the live body are exposed in the air without protection, which increases the possibility of electric shock during operation.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a low-voltage cable branch box which is less affected by the environment, safe in operation and beautiful in appearance, ensures safe operation of power users, and is easy to install and low in cost.

In order to achieve the above object, the utility model is realized through the following technical solutions:

The low-voltage cable branch box of the utility model includes a box body, a box cover, and a copper bus bar and a circuit breaker arranged in the box body; it is characterized in that it also includes a closed bus bar system for sealing the copper bus bar, which increases operational safety and avoids The electric shock of the copper busbar is eliminated; the box body is a non-metallic insulating shell made of unsaturated polyester resin glass fiber reinforced molding plastic material, which completely solves the problems of metal box body corrosion, leakage, roughness, etc., and can effectively prevent touch damage. Electric shock, lightning protection, anti-theft.

According to the above-mentioned low-voltage cable branch box, wherein, the above-mentioned closed busbar system includes a shell made of unsaturated polyester resin glass fiber reinforced plastic, the shell includes a bottom cover on the bottom of the copper busbar, an upper cover on the upper part of the copper busbar and an arc insulation The cover has a novel structure and good sealing performance, and adopts a hidden busbar and hexagonal steel fixing structure and technology. It has a beautiful appearance, strong versatility, and flexible and convenient disassembly.

According to the above-mentioned low-voltage cable branch box, wherein, the upper cover is further provided with cooling holes, which improves the cooling performance.

The utility model solves the problems of corrosion, leakage and roughness of the metal box through the SMC glass fiber reinforced polyester material box, and effectively prevents electric shocks and lightning strikes from touching, so that the service life can reach 30 years; at the same time, the box body The internal copper busbar is sealed with an insulated closed busbar system to prevent the possibility of artificial electric shock for operators, make it safe to operate, and ensure the safe operation of power users; and the busbar system is made of unsaturated polyester resin glass fiber reinforced plastic shell, which has a novel structure and is sealed Good performance; it has the advantages of convenient installation, low cost, beautiful appearance, strong versatility, and flexible and convenient disassembly.

Description of drawings

Fig. 1 is a schematic structural view of a box body of the present invention.

Fig. 2 is a schematic side view structure diagram of an embodiment of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Example:

As shown in Figures 1 and 2, the low-voltage cable branch box of this embodiment includes a box body 1, a copper bus bar 4 inside the box body 1, and a circuit breaker 6 below the copper bus bar 4; A door panel 2, a base 3 for setting the bottom of the box body 1, and a box cover for setting the top of the box body 1. The box body 1 adopts a non-metallic insulating shell made of unsaturated polyester resin glass fiber reinforced molding plastic material, that is, the material of box body 1 is SMC glass fiber reinforced polyester material, and the SMC material has high mechanical strength and low material weight. Lightweight, corrosion-resistant, long service life, high dielectric strength, arc resistance, flame retardant, etc., completely solve the problems of metal box corrosion, leakage, roughness, etc., and can effectively prevent electric shock, lightning strike, and theft.

It is worth noting that, referring to Fig. 2, there is also a closed busbar system 5 for sealing the copper busbar outside the copper busbar 4, which prevents the possibility of artificial electric shock for operators, makes it safe to operate, and ensures the safe operation of power users.

In this embodiment, the closed busbar system 5 includes a shell made of unsaturated polyester resin glass fiber reinforced plastic, which is used to seal the copper busbar 4, so as to insulate and seal the copper busbar 4, so as to prevent possible accidental electric shocks and ensure that the It is safe to touch. At the same time, because the copper busbar 4 is enclosed in the shell, it is not affected by the environment and pollution, prevents short circuit between phases and eliminates grounding faults caused by external moisture and dust.

The above-mentioned casing includes a bottom cover installed on the bottom of the copper bus bar 4, an upper cover installed on the upper part of the copper bus bar 4, and an arc shield. convenient;

In this embodiment, the rated voltage of the closed busbar system product is 400V, the insulation voltage is 800V, the maximum rated current is 800A, the short-term withstand current is 50kA, and the protection level is IP40; the modules are divided into 100A, 160A, 225A, 400A, 630A; it is equipped with circuit breakers of 100A, 160A, 225A, 400A and 630A respectively.

This implementation adopts hidden busbar and hexagonal steel fixing structure and technology, with beautiful appearance, strong versatility, flexible and convenient disassembly and assembly.

Based on the above, the closed busbar system used inside the cabinet 1 of the present invention is safe and reliable as a whole, and the copper busbar cannot be touched by people, and the overall appearance is elegant. Among them, the closed busbar system 5 adopts unsaturated polyester resin glass fiber reinforced plastic shell, which has novel structure and good sealing performance, and adopts hidden busbar and hexagonal steel fixing structure and technology, which has beautiful appearance, strong versatility, flexible and convenient disassembly and assembly .

In addition, the box 1 made of SMC glass fiber reinforced polyester completely solves the problems of corrosion, leakage, and roughness of the metal box, and the service life can reach 30 years.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. low-voltage cable feeder pillar, it comprises casing, case lid and is located at copper busbar and circuit breaker in the casing; It is characterized in that it also comprises the enclosed busbar system that is used to seal copper busbar; The nonmetal insulation shell that described casing is made for the unsaturated polyester resin glass fibre reinforced mould plastic material.

2. low-voltage cable feeder pillar according to claim 1, it is characterized in that, described enclosed busbar system comprises that one adopts the shell of unsaturated polyester resin glass fiber reinforced plastics, and this shell comprises bottom that the copper busbar bottom is set, is arranged on copper busbar top loam cake and arc cover.

3. low-voltage cable feeder pillar according to claim 2 is characterized in that, covers on described and also is provided with louvre.

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