In this note, we are going to know about the Basic Fuse Terminology or Fuse Parameters. Welcome to Poly Notes Hub, one stop solution for Diploma Engineering Notes for Polytechnic Students.
Author Name: Arun Paul.
Basic Fuse Terminology
Below, we listed some Fuse Parameters that are very important to know –
- Fuse Element: The conducting element within the fuse that melts or breaks when exposed to high current flow, terminating the circuit.
- Rated Current: The greatest current that a fuse can continuously carry without opening or interrupting the circuit under typical operating conditions is referred to as the rated current or nominal current.
- Fusing Current: The lowest current at which, in certain circumstances, a fuse will melt and open the circuit.
- Fusing Factor: How quickly the fuse will react to an overcurrent situation is shown by the ratio of the fusing current to the rated current. Relative to its rated current, a fuse with a higher fusing factor may blow sooner.
- Prospective Current: It is the highest possible current that can pass through a circuit when there is a fault and also known as Fault Current.
- Cut Off Current: The highest current that the fuse may safely cut off without endangering itself or others.
- Arcing Time: The amount of time that passes between the melting of the fuse element and the extinguishing of the produced arc. In order to limit equipment damage and lower the risk of fire, a short arcing duration is preferred.
- Rupturing Capacity: The highest fault current that can be interrupted by a fuse without risk of rupture or explosion.
- Total Operating Time: The duration, including melting and arcing times, between the initial overcurrent condition and the fuse interrupting the circuit.