4. Explain Over- Current Protection Concepts in detail.
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Electrical Engineering
4. Explain Over- Current Protection Concepts in detail.
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Overcurrent Protection and Overcurrent Protection Devices Examples of overcurrent protection devices are many fuses electromechanical circuit breakers and solid state power switches They are utilized in every conceivable electrical system where there is the possibility of overcurrent damage As a simple example consider the typical industrial laboratory electrical system shown in Figure 11 We show a oneline diagram of the radial distribution of electrical energy starting from the utility distribution substation going through the industrial plant and ending in a small laboratory personal computer The system is said to be radial since all branch circuits including the utility branch circuits radiate from central tie points There is only a single feed line for each circuit There are other network type distribution systems for utilities where some feed lines are paralleled But the radial system is the most common and the simplest to protect Examples of overcurrent protection devices are many fuses electromechanical circuit breakers and solid state power switches They are utilized in every conceivable electrical system where
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