Fuses are internal components used in electronic devices to protect the circuit safety of electrical appliances, so the performance requirements of fuses are relatively high. If the performance of the fuse does not meet the requirements and cannot be used, how should the performance of the fuse be viewed? What factors affect the performance of the fuse?
1. The performance of the fuse can be seen from the internal resistance, rated voltage, current, breaking capacity (melting point) of the fuse, and the material of the fuse, but generally the performance of certified fuses is qualified, but different model parameters have different. If the performance of the fuse will be affected, it may be caused by the following reasons:
2. The parameters such as fusing current, rated current, rated voltage, and breaking capacity of the fuse are not suitable for the circuit, which will affect the normal operation of the fuse. When the circuit is overloaded, the fuse cannot be blown in time, or other reasons cause the performance of the fuse. affected.
3. When the ambient temperature of the electrical equipment is too high, if you choose other fuses instead of thermal fuses, it will affect the performance of the fuses.
4. After the fuse is aging, the internal resistance increases, which will also affect the performance of the fuse.
5. The packaging materials of fuses are different and need to be installed in different working environments. If the packaging is not suitable for the working environment of the product, the performance of the fuse will be deteriorated and it will not work properly.
6. Whether the connection of the fuse in the circuit is correct will also affect the performance of the fuse. Assuming that the contact resistance of the fuse at the circuit connection part increases, the internal resistance of the fuse will increase, which will cause the fuse to not be overloaded in the circuit. disconnect the circuit.
In order to make the performance of the fuse reach the best state at work, it is necessary to select a suitable fuse, and then eliminate the factors that can affect it, so that the fuse can protect the circuit from damage when the circuit is abnormal.
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