Our friends know that you will sometimes use this leakage protection distribution box ? Now Xiaobian will tell you what this leakage protection distribution box is, what is the structure and function of the leakage protection distribution box? When our friends are dealing with this leakage protection distribution box, we must also know what are the installation requirements for some leakage protection distribution boxes, and what are the precautions for leakage protection distribution boxes.
First, leakage protection distribution box introduction
1. The distribution box is easy to manage and is convenient for maintenance when a circuit failure occurs.
2. Distribution boxes and distribution cabinets, switchboards, power distribution panels, etc. are complete sets of equipment for centralized installation of switches, meters and Other equipment.
3. The commonly used distribution boxes are made of wood and iron plates. Now, the electricity consumption is very large, so there are more irons.
4, the purpose of the distribution box: convenient to stop, send electricity, play the role of measurement and judgment stop, power.
Second, the structure and function of the leakage protection distribution box
1. Main power supply unit. The main gate of the power supply controls the total power supply of the household. Pulling down the main gate of the power supply can cut off the AC 220V phase line and neutral line of the household.
2. Leakage protector unit. When the indoor electric wire or electrical appliance leaks, and in case of electric shock, the leakage protector will cut off the power quickly.
3. Fuse unit. Two fuses are installed to supply power to the indoors in two ways. Usually, all the way to the lighting of the lamps in the household, and the other way through the sockets for household appliances. When an overcurrent or short circuit fault occurs, the corresponding fuse is automatically blown.
Third, leakage protection distribution box installation requirements
1. The production of distribution box (cabinet) shall comply with the "low-voltage switchgear and control equipment" part 4 GB7251.4 special requirements for construction site complete equipment (ACS) and "construction site temporary electricity safety technical specifications" 》JGJ46-2005 standard requirements.
2. The installation and use of distribution boxes (cabinet) and switch boxes shall comply with the JGJ46-2005 standard for "Safety Technical Specifications for Temporary Use of Construction Sites" and the GB/T13869 standardization requirements for "Safety Guidelines for Electricity Use".
3. The distribution box (cabinet) and switch box should be divided into N line and PE line terminal boards. The input and output lines must be connected reliably through the terminal board. The N-line terminal block must be insulated from the metal electrical installation board; the PE line terminal block must be electrically connected to the metal electrical installation board.
4. The N wire in the incoming and outgoing wires must be connected through the N wire terminal block; the PE wire must be connected through the PE wire terminal block. The PE wire must be electrically connected to the terminal block. The number of electrical connection points should be two more than the number of circuits in the cabinet. One is the connection point of the PE wire into the cabinet, and the other is the connection point of repeated grounding.
5. Electrical components should be selected according to GB/4048.2-2001, GB6829 and JGJ46-2005 standards, and meet the requirements of the “Eleventh Five-Year Plan†for the promotion and application of the Ministry of Construction.
Fourth, leakage protection distribution box precautions
1. Three-level power distribution: equipped with three types of standard electrical boxes: total distribution box, distribution electric box and switch box. The switch box should conform to one machine, one box, one gate and one leak. All types of electrical appliances in the three types of electrical boxes should be qualified.
2. Two-level protection: Select the leakage protection device in the main distribution box and switch box that meet the capacity requirements and quality.
3. This is beneficial to the maintenance of the on-site electrical system and fully guarantees the construction safety. It is also an embodiment of on-site standardization management and civilized construction. Therefore, it is crucial to make a reasonable setting of “three-level power distribution, two-level protectionâ€.
What are our leakage protection distribution boxes, and what are the advantages and functions of the leakage protection distribution box, friends have already understood very clearly, and there are some installation requirements for this leakage protection distribution box, we must look more, and leakage Precautions for protecting the distribution box, our decoration home network also has some decorative information, friends continue to pay attention.
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