Electric fuse
An electric fuse is an electronic device, which protects the electrical equipment connected in the circuit such as electric bulb, fridge, fan, etc. in case of overloading and short
the course in the electric circuit.
OR
That protective device connected in a series of electric circuits to protect cables and equipment against the high electric current is called fa use.
how fuse works
The fuse is made of non-flammable material and has a low resistance iron leaf inside it, which when a considerable amount of current passes through it, that leaf melts the same, due to which the fuse is It gets damaged. Not much current can reach further, and the goods do not get spoiled.
The fuse also acts as a circuit breaker, and when there is a sudden drop in power, the fuse breaks the circuit there. Fuse not only acts as a safety protector but also protects people from electrical hazards.
Characteristic of fuse wire
Due to the low melting point of the fuse wire and high resistance, if the value of current in any device connected to the circuit exceeds a specific matter, then the fuse wire melts, and the supply of current to the equipment connected to the course is cut off. The equipment is protected from damage.
types of electrical fuses
Electrical fuses are generally of type HRC fuse, kit ket fuse, Curtiz fuse, etc.
Use of Electrical Fuse
Electrical fuses are used in series with the main phase wire. It is used in a series order of TV inverters etc. It is used in the boards of houses. Due to which it melts when the current is high.
BENEFITS OF FUSE IN CIRCUIT
1-It breaks the circuit without making any sound in case of a heavy short rotation.
2-This automatically breaks the circuit. The small size of the fuse element is suitable for breaking the circuit
3-Operation time is minimum
What is the fusing factor?
For any fuse element, the ratio of the minimum smelting current to the prescribed current of the fuse is called the fusing factor. Its value is always greater than one.
How is a fuse made?
Generally, lead, tin, copper, zinc, and silver are used for the fuse element. For low current (10 A), tin or a mixture of lead and tin (Lead 37% + Tin 63%) is used. For high wind, copper or silver or a mixture of both is used. Generally, silver is used chiefly at this time.
Benefit of fuse
1-It can be carefully removed and mounted only in the switched-on position.
2-The cost involved in changing the fuse element is significantly less.
3-These are relatively cheap.
4-After the molten fuse is transferred, it can be used again.
disadvantages
This type of fuse has less breaking capacity. Hence they cannot be used in case of high fault.
HRC fuse
This type of fuse contains carbon tetrachloride, and both its ends are covered with caps. When there is any disturbance in the flowing current, which is above its limit, the filled element comes out; the fluid-filled in it acts as an arc extinguisher to protect the transformers and is Used to support and break the circuit.
Benefits of HRC FUSE
1-Its operation speed is high.
2-It does not require maintenance.
3-These fuses are designed for current from 2 to 800 amps.
4-It is a reliable protective device.
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