5 Questions
What are the materials used for fuse casing?
Fuse casing may be made up of ceramics, glass, plastic, or molded mica laminates.
What is a fuse?
A fuse is a short piece of metal inserted in the circuit which melts when excessive current flows through it and thus breaks the circuit.
What are the two main parts of a fuse?
The two main parts of a fuse are the fuse casing and the fuse elements.
What are the characteristics of the materials used for fuse elements?
The materials used for fuse elements must have a low melting point, low ohmic loss, high conductivity, low cost, and be free from deterioration.
What are the characteristic parameters of a fuse?
The characteristic parameters of a fuse include rated voltage, normal rated current, and speed/time lag.
Study Notes
Fuse Basics
- A fuse is an essential safety device that protects electrical circuits from overcurrent conditions
Fuse Casing Materials
- The materials used for fuse casing are ceramic, glass, or plastic
- These materials provide insulation, mechanical strength, and resistance to environmental factors
Fuse Components
- A fuse consists of two main parts: the fuse element and the fuse casing
- The fuse element is the conductive material that melts or breaks when the current exceeds a certain threshold
- The fuse casing provides mechanical protection and insulation for the fuse element
Fuse Element Characteristics
- The materials used for fuse elements have high melting points, high conductivity, and low temperature coefficient of resistance
- Examples of fuse element materials include zinc, silver, copper, and tin
Fuse Parameters
- The characteristic parameters of a fuse include the ampere rating, voltage rating, and operating temperature range
- These parameters determine the fuse's ability to protect electrical circuits from overcurrent conditions
Learn about the fundamental aspects of fuses, including their introduction, construction, working principle, types, comparison with MCB, and advantages/disadvantages. This module covers basic definitions, fuse element materials, characteristic parameters, and more.
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