Hello Readers, Do you want to get Complete information on How The Fuse Materials Is Selection?, selection of fuse materials- If yes, then in this article you will get to know the complete information related to the Selection of Fuse Materials.
The following points are kept in mind for selecting the right fuse-
- voltage rating
- Current Rating
- general oprating current
- ambient temperaure
- Overload conditions and opening hours
- current-carrying capacity
- Melting integral
- physical size
Selection of Fuse Materials
At the time of excessive current flow, fuses separate the faulty circuit from the primary circuit and protect the circuit from burning. The over-current condition occurs when more current flows through the circuit than the prescribed load and short circuit fault occurs when less current flows through the circuit.
Therefore, it is very important to choose the right fuse material so that the protection system can be strengthened further by selecting the suitable fuse material in different situations.
Selection of Fuses
1. Voltage Rating – The voltage rate must be greater than or equal to the maximum open-circuit voltage. Therefore, the selection of fuse material should be based on the voltage rate.
2. Current Rating – Current rating of the fuse tells its current carrying capacity. Each fuse is marked with its current rating number, letters, or color code.
3. Normal Operating Rating – The fuse material should be selected to work at the average operating current level. The average operating current level is the level at which the current changes.
4. Ambient Temperature – The ambient temperature is the temperature at which the temperature of the air surrounding the fuse. It is usually 25°C. The fuse material should be selected, taking into account the wide temperature range.
5. Overload Conditions and Opening Time – The first overload point for the fuse should be 200-300% of the prescribed current.
6. Current Carrying Capacity – The current carrying capacity of the fuse element for arc extinction and safe operation of the fuse should be equal to or more than the short circuit current and the current carrying capacity of the fuse. I, the material of the fuse element The specific resistance of a material is inversely proportional to P.
7. Melting Integral – The melting point of a fuse is 12t, equal to the thermal energy at which the fuse material melts.
8. Physical Size – The size of the fuse is determined based on its selection in the material.
- Read more: HRC Fuse : Construction and Working & Its Advantages
- Read more: Classification of Overhead Transmission Line
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