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10 2023-04

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July 10,2023

Use and maintenance of fuses.solar panel fuse diagram

　　　　In low-voltage distribution systems, fuses are a type of electrical appliance that plays a safety protection role. Fuses are widely used for power grid protection and electrical equipment protection. When a short circuit fault or overload occurs in the power grid or electrical equipment, they can automatically cut off the circuit to avoid damage to electrical equipment and prevent accidents from spreading.　　A fuse is composed of an insulation base (or support component), contacts, melt, etc. The melt is the main working part of the fuse. The melt is equivalent to a special section of wire connected in series in a circuit. When a short circuit or overload occurs in the circuit, the current is too high, and the melt melts due to overheating, thereby cutting off the circuit. Melts are often made into filaments, grids, or sheets. Melt materials have the characteristics of relatively low melting point, stable characteristics, and easy melting. Generally, lead-tin alloy, silver plated co

October 14,2023

air conditioner fuse block pull-out.What is the breaking capacity of a fuse

　　　　As a safety component, in addition to its performance requirements, a fuse must also have strict safety requirements. The breaking capacity of a fuse is an important indicator reflecting the safety performance of the fuse. Its specific meaning is: the maximum short-circuit current that the fuse can withstand without any unsafe phenomena during the process of breaking the circuit. The unsafe phenomena here include - continuous arcing, smoking, spraying, splashing Burning, explosion, etc. Tubular fuses can be classified into high breaking (1500A), low breaking (35A or 10In), and enhanced breaking (150A) types based on their breaking capacity. The breaking capacity of chip fuses is generally between 30-60A, which is often overlooked or misunderstood by users or confused with the fusing characteristics of fuses, The correct understanding of the breaking capacity of a fuse should be that the extreme maximum current in the event of a short circuit in the protected circuit cannot exceed t

October 28,2023

youtube fuseschool.Does the fuse have a resistance value?

　　　　Fuses have resistance values, but in fact, even wires have resistance. However, the resistance of the wires is very small (the nature of the conductor), which is usually ignored in general circuit calculations. However, the resistance of a fuse is significantly higher than that of an equally long wire, so that it can protect the circuit.　　The fuse is marked with "5A 250V", indicating that the maximum current allowed for Shenzhen fuses is 5A, which is called the rated current; The maximum voltage allowed to pass through is 250V, which is called the rated voltage. If the current or voltage exceeds the rated value, the fuse will blow, causing the circuit to open, thus protecting the consumer (without a fuse, the consumer may be burned out).　　The principle of fuse blowing is Joule's law. Joule's law: The heat generated by an electric current passing through a conductor is proportional to the square of the current, to the resistance of the conductor, and to the time it is energized. Jou

November 01,2023

Self recovery performance and working process of self recovery fuses

　　　　Traditional fuses are installed in circuits. When an overcurrent occurs due to a fault or abnormality in the circuit, the fuse itself melts to cut off the current and protect the circuit. However, due to the fact that traditional fuses can only protect once and need to be replaced if burned out, some products still cannot resume operation after troubleshooting or abnormal overcurrent disappears. As a new type of overcurrent protection device, the self recovery fuse has the function of automatic recovery, which can meet the performance requirements of similar applications.　　The self recovery fuse is connected in series in the circuit, and under normal circumstances, it is in a low resistance state to ensure the normal operation of the circuit; When a circuit experiences a short circuit or abnormally high current flows in, the self-heating of the self-healing fuse increases its impedance and limits the current to a sufficiently small amount, providing overcurrent protection.　　Self re

August 17,2023

Can self restoring fuses solve circuit faults?autozone fuse tester

　　　　Self recovery fuse is a special material made with automatic recovery function. After a circuit failure, the current increases, and the self recovery fuse will change its structure to block the current, achieving the effect of protecting the circuit. Some people think that installing a self restoring fuse in the circuit can automatically solve the problem of circuit faults. Next, the editor will answer for everyone.　　Although self restoring fuses can protect circuits from being damaged by overcurrent, they cannot completely solve the problem of circuit faults. After a circuit malfunction occurs, the fuse blocks the current, and after a period of time, it will automatically restore its own structure and reconnect the circuit. If you do not solve the problem of an increase in current caused by a circuit malfunction, the self recovery fuse will operate again and again until the fuse is damaged.　　So can self restoring fuses solve circuit faults? In fact, self recovery fuses are only su

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Operating parameters of automobile fuse holder

10

2023-04