CN206864947U - A kind of load side cable distribution box - Google Patents

Abstract

A load-side cable distribution box, including a box body provided with a box door, characterized in that: the box body is provided with switch blades, leakage air circuit breakers and three-phase four-wire copper busbars connected in sequence through cables . The utility model uses a leakage air circuit breaker with two functions of an air switch and a leakage circuit breaker, which can not only play the role of an air switch when the line is short-circuited, but also play the role of a leakage switch when the line leaks. The setting not only ensures the safety of electricity consumption, but also enables quick troubleshooting, restoration of power supply, and improvement of electricity utilization efficiency.

Description

A load side cable distribution box

technical field

The utility model relates to the field of electric power, in particular to a load-side cable distribution box.

Background technique

The distribution box provides power distribution for the power or lighting load in a certain area, and its installation method can be divided into wall-mounted box type and floor cabinet type according to the capacity. The load-side cable distribution box is the upper-level power distribution device of the meter box in residential areas. The box is often only equipped with an air switch to prevent line short circuit, but there are no relevant protection measures for line leakage, which will undoubtedly cause serious damage to personal safety. Certainly a threat.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, and provide a load-side cable distribution box with a simple structure, which can effectively improve the efficiency of power consumption and ensure the safety of power consumption.

In order to achieve the above purpose, the technical solution of this utility model is: a load side cable distribution box, including a box body with a box door, which is characterized in that: the box is provided with gates connected sequentially through cables knife, leakage air circuit breaker and three-phase four-wire copper busbar.

The box door is covered on the box body, and the box door and the box body are connected together by telescopic rods.

The three-phase four-wire copper busbars are arranged in staggered levels, and the cables are respectively fixed to the corresponding copper busbars by bolts.

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model uses a leakage air circuit breaker with two functions of an air switch and a leakage circuit breaker, which can not only quickly and automatically disconnect the power supply when the line is short-circuited, but also avoid burning large-area electrical equipment or causing fire casualties caused by long-term power-on In case of an accident, it can also automatically trip in a short period of time when there is a leakage in the line (that is, trip in 0.1 seconds). This setting not only ensures the safety of power consumption, but also helps to quickly eliminate faults, restore power supply, and improve power consumption efficiency. .

2. The cable distribution box in this utility model is installed at the end of the line T connected to the fire load side. When T is connected to the fire side and the user needs equipment maintenance or new installation, the branch can be directly connected to the fire at the customer T. Disconnect the load in the box, pull the switch knife, and hang the grounding wire to start working, avoiding the need to stop the entire line or the entire transformer during maintenance, reducing the scope and time of power outages, reducing customer complaints, and more provide national energy.

3. Since the switch knife used in the utility model has an obvious break point, when it needs to be overhauled, it only needs to be grounded under the switch knife to start working, so as to ensure the personal safety of the staff.

4. The three-phase four-wire copper busbars in the utility model are arranged in a staggered level, mainly to ensure that there is sufficient inter-phase distance and inter-line distance between copper busbars and copper busbars, and between cables. , to avoid phase-to-phase short circuit due to too close distance, and this setting can also reduce the difficulty of wiring operation in the narrow space of the distribution box, making wiring more convenient and shortening the installation time.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the utility model.

Fig. 2 is a side view of the utility model.

In the figure: box door 1, box body 2, cable 3, switch knife 4, leakage air circuit breaker 5, three-phase four-wire copper busbar 6, telescopic rod 7.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1-2, a load-side cable distribution box includes a box body 2 provided with a box door 1, the box door 1 covers the box body 2, and the box door 1 and the box body 2 are connected by a telescopic The rods 7 are connected together, and the box body 2 is provided with a switch knife 4 sequentially connected by a cable 3, an air leakage circuit breaker 5 and a three-phase four-wire copper busbar 6, and the three-phase four-wire copper busbar 6 is a high-low staggered arrangement, and the cables 3 are respectively fixed on the corresponding copper busbars by bolts.

When using this distribution box, if there is a short circuit in the load side circuit, the leakage air circuit breaker 5 can trip automatically, if there is a leakage phenomenon in the circuit in the resident's home, its protector that is equipped with a leakage protector in the family can trip automatically, if If the leakage protector in the home is damaged or there is no leakage protector in the home, the leakage air circuit breaker 5 in the box body 2 will automatically trip and cut off the power, and the leakage indicator light on the leakage air circuit breaker 5 will light up at the same time, indicating the cause of the failure. When needing power outage maintenance, only need box lid 1 to be started and supported with telescopic rod 7, then switch knife 4 in the box body 2 is pulled down and gets final product, can install grounding wire below switch knife 4 handles if necessary.

Claims (3)

1. a kind of load side cable distribution box, including it is provided with chamber door（1）Casing（2）, it is characterised in that：The casing（2） Inside it is provided with cable（3）The plug-in strip being sequentially connected with（4）, electric leakage air-break（5）With three-phase and four-line copper bus-bar（6）.

2. load side cable distribution box according to claim 1, it is characterised in that：The chamber door（1）It is covered in casing（2） On, chamber door（1）With casing（2）Between pass through expansion link（7）Link together.

3. load side cable distribution box according to claim 1, it is characterised in that：The three-phase and four-line copper bus-bar（6）For High-low staggered-floor is set, the cable（3）It is separately fixed at by bolt on corresponding copper bus-bar.