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SUNIL SAGAR
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Why we are using Three phase & single phase instead of using two phase , four phase, five phase.
A three-phase system is generally more economical than others because it uses less conductor material to transmit electric power than equivalent single-phase or two-phase systems at the same voltage.
The most obvious advantage of three-phase power transmission using three wires, as compared to single-phase power transmission over two wires, is that the power transmitted in the three-phase system is the voltage multiplied by the current in each wire times the square root of three (approximately 1.73). The power transmitted by the single-phase system is simply the voltage multiplied by the current. Thus the three-phase system transmits 73% more power but uses only 50% more wire.
Single phase power is used for smaller electrical loads, such as household appliances and lighting. It is also used in small businesses and offices. Single phase power is less expensive to install and maintain compared to three phase power.
The main difference between single phase and three phase power is the number of wires used. Single phase power uses two wires (one hot and one neutral) while three phase power uses three wires (three hot wires). Three phase power is used for larger electrical loads, such as industrial equipment and large buildings.
Single phase power is typically used for smaller electrical loads that do not require a lot of power. This includes household appliances, lighting, and small businesses. It is also used in areas where three phase power is not available.
Three phase power is more efficient and can handle larger electrical loads compared to single phase power. It also allows for a more balanced distribution of power, resulting in less strain on the electrical system. Three phase power is commonly used in industrial and commercial settings.
Yes, single phase and three phase power can be used together in certain situations. For example, a building may use single phase power for lighting and smaller loads, but also have three phase power for larger equipment. However, special equipment, such as transformers, may be needed to convert between the two types of power.