A fuse is an electric/electronic or mechanical device, which is generally used to protect circuits from overloading, the excessive current which then makes sure the protection of the circuit. There are different electrical fuse manufacturer and types of fuses, but their function is the same. Here we will discuss its construction, working, and characteristics.
Working and Construction of a Fuse
A general fuse consists of a low resistance metallic wire that is enclosed in a non-combustible material. It is used for connection and installation in series with a circuit and device which then needs to be protected from short circuit and over current. If it is not done then in the absence of the fuse, circuit breaker, and arrester disconnector, the electrical appliance may get damaged as they are unable to handle the excessive current according to their rating limits
The thin wire inside the fuse melts whenever a short circuit, over current or mismatched load connection, occurs and it is due to the heat generated by the heavy current flowing through it. Therefore, from the connected system, it disconnects the power supply. Fuse wire is just a very low resistance component in the normal operation of the circuit and it does not affect the normal operation of the system connected to the power supply.
Characteristics of a Fuse
- Breaking Capacity of a Fuse
- Current Carrying Capacity of Fuse and its fuse
- I2t Value of Fuse
- Response Characteristic of a Fuse
- Response Characteristic
- Rated voltage of Fuse
- Voltage Rating of Fuse
Packaging Size
On the amount of current flowing through its wire the speed at which the fuse blows rely on. The response time will be faster if the current flowing through the wire is higher.
For an overcurrent event response, the characteristic shows the response time. Ultra-fast fuses or Fast fuses are the types of fuses that respond rapidly to the current situation. In many semiconductor devices, they are used as semiconductor devices are damaged by overcurrent very rapidly.
There is another fuse which is called a slow burn fuse. To the overcurrent event, this 24kv drop out fuse does not respond instantly but after several seconds of over-current occurrence, it blows. In motor control electronics systems such fuses found their application and it is because motors take a lot more current at starting than running. Follow us on Twitter
No comments:
Post a Comment