Terminal Block Knowledge
In recent years, the use of terminal blocks in electronic equipment has become a very common phenomenon. The power of the power terminal itself is getting larger and larger, and the volume of the terminal is also developing in a larger direction.
In addition, their measurement performance and parameters vary in different regions. Some identical products have very different parameters. Understanding these differences is therefore important to keep the terminal low cost and long-term reliable.
In the process of continuous innovation and improvement, the circuit board of wiring terminals will be able to carry more and stronger current. Recently, it has even broken through 110A, completely leading the production level of foreign developed countries.
However, in the process of design, what type of terminal is used to become the biggest problem, but also to fully meet all the needs of the system.
Terminal Block Definition
The unit of the terminal block is “bit”, and one bit is 1 “bit”. Usually, the so-called table is the serial number of terminals. These serial numbers have different definitions in different applications.
“Node” and “bit” mean the same thing, just different names. A group is made up of nodes. The usual terminals are 2 bits, 3 bits, 4 bits, 6 bits, 12 bits, etc., which are divided by number. By capacity: 10A, 20A, 40A, and so on.
In power electronics wiring, when the equipment inside the screen is connected with the equipment outside the screen, some special wiring terminals are needed. When these wiring terminals are combined, they are called terminal block.
The function of the terminal block
Terminal block, commonly used English letters and numbers, or Chinese phonetic alphabet plus numbers, to indicate the maximum contact point current flux, as well as the size of the terminal block and the number of endpoints.
The function of the terminal block is to connect the lines of the devices inside and outside the screen and play the role of signal (current and voltage) transmission. With the terminal block, making the wiring beautiful, convenient maintenance, in the remote line between the connection is mainly firm, convenient construction and maintenance.
Secondly, the terminal line in the tin after the black reason, there are a lot of people think is the climate problem, maybe the weather is too cold, the temperature is too big or too high and so on.
In fact, untreated or tinned copper wire can also oxidize in the presence of tin. Copper in the air in two steps, the first copper reacts with oxygen to form copper oxide. The copper oxide and carbon dioxide in the air and water then react to form a green oxide. The oxidation of copper is a normal chemical reaction.
Wet weather water droplets can adhere to the surface of the product. The larger the water droplet, the less circulation or the lower the air temperature, the harder the surface water is to volatilize, thereby accelerating the oxidation reaction of copper and tin in the air, causing the electronic sky to turn black.
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