CN204597272U - A kind of secondary earth leakage protective coupling box - Google Patents

Abstract

The utility model discloses a secondary leakage protection junction box, which relates to the technical field of power appliance transformation. Including a box body, the bottom of the box body is provided with installation holes, and its side is provided with threading holes. The inside of the box body is equipped with a coupled knife switch, an intelligent leakage circuit breaker and a terminal block, and one end of the coupled knife switch Connect to the mains, and the other end is connected to the terminal block through the intelligent leakage circuit breaker. The terminal block is electrically connected to the user's smart meter box through the threading holes. There is a window capable of pulling and closing the smart earth leakage circuit breaker switch. The utility model is convenient for installation and transportation, economical and beautiful, improves work efficiency, reduces labor force, is simple in design and easy to operate, and is suitable for mass production.

Description

A secondary leakage protection junction box

technical field

The utility model relates to the technical field of power appliance transformation, in particular to a secondary leakage protection junction box.

Background technique

Now the State Grid Corporation is vigorously promoting the smart meter transformation project, using a single meter box instead of a centralized meter box, so that the single meter box group will lose the intermediate leakage protection, and at the same time, the meter connection line entering the meter and the household connection line leading down from the pole Connections form two or more exposed joints. The metering device and wiring form assembled in this way are neither beautiful nor meet the relevant regulations of the State Grid that three-level leakage protection must be installed, and there are potential safety hazards, which are easy to endanger personal safety. Another problem is that the maintenance personnel have no obvious disconnection point when inspecting the metering device, and need to close the circuit breaker in the first-level protection (that is, the low-voltage integrated power distribution cabinet commonly known as JP cabinet), which causes more users to lose power. Unnecessary expansion of the blackout area.

Traditional wiring method:

Traditional wiring method 1: The household line enters the meter box from the first meter, and the wire passes through 1 to 5 meters from the bottom of the meter box and then connects to the control switch of the sixth meter. The first meter to the fifth meter incoming line are respectively connected to the control switch of the meter incoming line from the connector on the main power line in the meter box. It is difficult to connect the connectors in the meter box due to terrain restrictions. A problem is that if the user moves the watch and replaces the watch, because the power cord passes through the watch box, the watch box must be destroyed before it can be replaced. This results in unnecessary material waste.

Traditional wiring method 2: After the household line is fixed on the shelf of the incoming line, each meter leads a 2*10 wire from the control switch of the incoming line of the meter and connects it to the phase line and neutral line of the household line , The joints of the phase line and the neutral line of the meter box inlet line and the household line are exposed to the external environment for a long time, and the insulating tape is aged and peeled off, which may cause personal electric shock casualties to maintenance personnel.

Traditional wiring method 3: The household line is fixed on the shelf of the incoming line and then connected to the control switch of the first meter incoming line, and then a 2*10 parallel line is drawn from the control switch of the meter incoming line to the second From the meter inlet control switch of the first meter, a 2*10 parallel line is drawn from the meter inlet control switch of the second meter to the meter inlet control switch of the third meter, and so on. If there are many meter boxes, lead a 2*10 parallel line from the user line to the meter inlet control switch of the fourth meter, and then lead out from the meter inlet control switch of the fourth meter. A 2*10 parallel wire is connected to the control switch of the meter inlet line of the fifth meter, and so on. Then from the control switch of the meter inlet line of the fifth meter, a 2*10 parallel wire is drawn to the control switch of the meter inlet line of the sixth meter, and so on. This wiring method will increase the size of the first meter. If the user load is heavy, it is easy to burn out the meter incoming line control switch. After the meter incoming line control switch burns out, the second and third meters will lose power and cause a power outage.

Utility model content

The technical problem to be solved by the utility model is to provide a secondary leakage protection junction box, which solves the problems of no intermediate protection for the smart meter box, poor contact between the incoming meter line and the household line, and increasing the power outage area during maintenance; it is beneficial Eliminate potential safety hazards and improve work efficiency.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a secondary leakage protection junction box, including a box body, the bottom of the box body is provided with a mounting hole, and its side is provided with a threading hole. The inside of the box is equipped with a coupled knife switch, an intelligent leakage circuit breaker and a terminal block. One end of the coupled knife switch is connected to the mains, and the other end is connected to the terminal block through the intelligent leakage circuit breaker. The terminal block is threaded The holes are respectively electrically connected with the user's smart meter box, and the box body is hingedly connected with a box cover, and the box cover is provided with a window capable of pulling and closing the switch of the smart leakage circuit breaker.

Preferably, the box body is made of polycarbonate material, and the box cover is made of insulating transparent waterproof material.

Preferably, the box as a whole is a rectangular box with a length of 40 cm, a height of 60 cm, and a thickness of 15 cm.

The beneficial effects produced by adopting the above-mentioned technical solution are: the utility model can effectively reduce the labor intensity of construction personnel, ensure the safety of personnel and equipment, and ensure good contact without false connection or sparking. An obvious disconnection point is added, just pull the intelligent leakage circuit breaker and coupling knife switch in the secondary leakage protection distribution box, which can effectively reduce the power outage area. At the same time, after adding the second-level protection of the smart meter box, it meets the relevant regulations of the State Grid that the third-level false report must be installed. The utility model is convenient for installation and transportation, economical and beautiful, improves work efficiency, reduces labor force, simplifies design, and is easy to operate, which is suitable for mass production. It solves the problems of no intermediate protection for the smart meter box, poor contact between the incoming meter line and the household line, and increases the power outage area during maintenance; it is beneficial to eliminate potential safety hazards and improve work efficiency.

Description of drawings

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

Among them, 1 box body, 2 coupled knife switch, 3 intelligent leakage circuit breaker, 4 terminal block, 5 installation hole, 6 box cover, 7 threading hole, 8 window.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, the utility model is a secondary leakage protection junction box, comprising a box body 1, the bottom of the box body 1 is provided with an installation hole 5, and its side is provided with a threading hole 7, the box body 1 is equipped with a coupled knife switch 2, an intelligent leakage circuit breaker 3 and a terminal block 4. One end of the coupled knife switch 2 is connected to the mains, and the other end is connected to the terminal block 4 through the intelligent leakage circuit breaker 3. The terminal block 4 is electrically connected to the user's smart meter box through the threading holes 7, and the box body 1 is hingedly connected with a box cover 6, and the box cover 6 is provided with a window 8 capable of pulling and closing the switch of the intelligent leakage circuit breaker 3; The box body 1 is made of polycarbonate material, and the box cover is an insulating transparent waterproof material; the box body 1 is a rectangular box body as a whole, and the box body is 40 cm long, 60 cm high, and 15 cm thick.

Example:

The utility model is composed of a coupled knife switch, an intelligent leakage circuit breaker and a terminal block, which are rationally arranged in the box body. The cabinet is 40 cm long, 60 cm high, and 15 cm thick, and is made of polycarbonate material. After the user wire is led down from the pole and fixed on the wire rack on the wall, the lead wire is crimped with a copper-aluminum transition wire nose and then directly connected to the upper port of the coupled knife switch, and the lower port of the coupled knife switch is used 10 The square copper wire is connected to the upper port of the intelligent leakage circuit breaker, and the lower port of the intelligent leakage circuit breaker leads to two copper terminals, and 12 strands of 6 square copper wires are respectively connected to the intelligent leakage circuit breaker from the 6 terminal blocks on the right. The lower port of the leakage circuit breaker leads to two copper terminals, and the meter incoming wires of the centralized meter box assembled from a single meter box are connected to the outgoing wires of the 6 terminal blocks. In this way, a secondary leakage protection junction box with obvious disconnection point, leakage protector and good contact is formed. This two-level leak protection junction box is easy to install and transport, economical and beautiful, and improves work efficiency. Reduced labor force, simplified design, and easy operation are suitable for mass production.

The utility model can effectively reduce the labor intensity of construction personnel, ensure the safety of personnel and equipment, and ensure good contact without false connection or sparking. An obvious disconnection point is added, just pull the intelligent leakage circuit breaker and coupling knife switch in the secondary leakage protection distribution box, which can effectively reduce the power outage area. At the same time, after adding the second-level protection of the smart meter box, it meets the relevant regulations of the State Grid that the third-level false report must be installed. The utility model is convenient for installation and transportation, economical and beautiful, improves work efficiency, reduces labor force, simplifies design, and is easy to operate, which is suitable for mass production. It solves the problems of no intermediate protection for the smart meter box, poor contact between the incoming meter line and the household line, and increases the power outage area during maintenance; it is beneficial to eliminate potential safety hazards and improve work efficiency.

Claims (3)

1. a secondary earth leakage protective coupling box, it is characterized in that: comprise casing (1), described casing (1) bottom is provided with installing hole (5), its sidepiece is provided with through wires hole (7), described casing (1) inside is provided with manifold type disconnecting link (2), intelligent leakage circuit breaker (3) and connecting terminal block (4), described manifold type disconnecting link (2) one end connects civil power, the other end is connected with connecting terminal block (4) through intelligent leakage circuit breaker (3), described connecting terminal block (4) is electrically connected with user's Intelligent meter box respectively through through wires hole (7), described casing (1) is hingedly connected with case lid (6), described case lid (6) is provided with can the window (8) of drawing intelligent leakage circuit breaker (3) switch.

2. a kind of secondary earth leakage protective coupling box according to claim 1, is characterized in that: described casing (1) adopts makrolon material, and described case lid is insulation transparent waterproof material.

3. a kind of secondary earth leakage protective coupling box according to claim 1, is characterized in that: the overall orthogonal casing of described casing (1), described casing (1) long 40cm, high 60cm, thick 15cm.