The material of fuses is usually not simply lead or tin, but alloys of various components such as lead tin alloys. In the early days, pure lead was used as the material for fuses. Lead has a low melting point and can quickly melt when the current is too high, thereby protecting the circuit. However, pure lead also has some limitations, such as relatively low mechanical strength and susceptibility to deformation in some complex installation environments. Tin also has a lower melting point, but pure tin is not ideal in some aspects, such as the possibility of "tin plague" phenomenon at low temperatures, which can cause changes in material properties. Lead tin alloy combines the advantages of both. This alloy can adjust the ratio of lead and tin according to different needs to achieve the appropriate melting point. Usually, fuses of different specifications can control the melting temperature by changing the alloy composition. This ensures timely melting under overcurrent condition
1. Introduce the function and classification of ceramic tube fuses, and emphasize the importance of judging their quality. Ceramic tube fuse is a common electronic component mainly used to protect circuits from damage caused by overload or short circuit faults. According to different rated currents and voltages, ceramic tube fuses can be divided into various models of different specifications. It is very important to judge the quality of ceramic tube fuses in use, which can ensure the normal operation and safe use of the circuit. 2. Introduce how to judge the quality of ceramic tube fuses through visual inspection. Visual inspection is one of the most basic methods to determine the quality of ceramic tube fuses. Firstly, the fuse housing should be checked for any obvious damage or deformation. Secondly, it is necessary to check whether the contact between the two ends of the fuse is tight and whether there is oxidation or corrosion. Finally, the surface of the fuse should be che
Rated current: Understanding the rated current of the equipment or motor you are testing is crucial. The rated current of the fuse should be greater than the rated current of the equipment to ensure that the fuse will disconnect the circuit and provide overload protection when the current exceeds the set threshold during the experiment. Short circuit protection: In the stall experiment, the equipment may generate huge currents due to overload or stall. It is important to choose fuses with lower melting current and fast melting characteristics to prevent equipment from overheating or damage. Freeze voltage: Select the fuse according to the voltage requirements of the equipment. The freeze voltage of the fuse should match the operating voltage of the equipment to ensure that the fuse can function properly during the experiment. Temperature characteristics: In the stall experiment, the equipment may generate high temperatures. Choosing fuses with appropriate temperature coefficient
Three terminal fuse is a special type of fuse commonly used in energy storage systems to protect batteries and energy storage devices from damage caused by faults such as overcurrent and short circuit. Here is some information about the application of three terminal fuses in energy storage: Battery protection: The three terminal fuse in the energy storage system can be used to protect the battery pack from damage caused by overcurrent and overheating. When there is current overload or abnormal temperature rise in the battery pack, the three terminal fuse can quickly cut off the circuit to prevent further damage to the battery. Charge and discharge control: Three terminal fuses can help control the charging and discharging process of energy storage systems to ensure the safety and stability of the system. By setting the appropriate rated current and trigger temperature, the three terminal fuse can prevent system overload or overheating, protecting the battery and equipment. Short
Everyone knows about fuses, but the self recovering fuse (PPTC) in fuses may not be well understood. In fact, PPTC self-healing fuses, like the fuses we all know, play a role in limiting current and achieving circuit protection. Simply put, once the current in the circuit exceeds the specified current, it will cut off the current. In daily life, the application of fuses can be seen everywhere, such as in household appliances. But do you know what material it is made of? Self recovery fuse is an innovative type of fuse with more technical content and wider application range than ordinary fuses. It has the characteristic of being recoverable, so it must use easily melted metal materials to cut off the current in case of overcurrent and achieve protective effect. And this easily melted metal material is usually lead antimony alloy wire. Mainly using aluminum alloys with Mg as the main element (Mg based aluminum alloys have good corrosion resistance, strong thermal conductivity, an
PPTC and fuses both do the same job: protecting electronic circuits from overcurrent related issues. The difference is that the fuse must be replaced after tripping, while PPTC can reset itself. PPTC can handle sudden overcurrent events without the need for replacement. PPTC and fuses both react to excessive current by generating heat, but they react in different ways. The fuse melts and breaks, completely interrupting the current, while PPTC limits the current by changing from a low resistance state to a high resistance state as the temperature increases. In short, if it is necessary to stop the current to fully protect the equipment, fuses are preferred. On the other hand, PPTC is typically used to anticipate situations where overcurrent events frequently occur, and it is crucial to maintain a constant system uptime at a lower service cost. They are also useful in remote or hard to reach places where replacing fuses is challenging. Both circuit breakers and resettable fuses can
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