Tuesday 7 May 2013

6.18 explain the use of step-up and step-down transformers in the largescale generation and transmission of electrical energy

In the national grid (the system which delivers electricity around the country) transformers are used. Because the wires are long there is more resistance, so a high current will cause a lot of heat; which is dangerous and looses a lot of energy. When electricity leaves a power plant, a step up transformer is used, this means the voltage is high, but the current is low. When electricity reaches a home or business it is stepped down to make it useful in appliances that we use, the wires are shorter so less of a danger is presented by this.

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7 comments:

  1. Unknown25 January 2016 at 16:20

    Step-ups are used to lower the current as P=I2R (2 shows squared) this is the power loss during transmission and as P/I=V the lower the current the higher the higher the voltage (as the lower the dividing factor the higher the product you get) and therefore you have significantly reduced power loss as I is squares in power loss so by decreasing the current you get a significant decrease in power loss hence the use of transformers (thought a more equation based answer might be useful)

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  2. Miracle Electronics15 July 2016 at 04:07

    Step Up & Step Down Transformers are used for stepping up and down the voltage level of power in various transmission and distribution of power system networks.
    Power transformers in India | Wire harness manufacturer in India

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  3. Anonymous22 January 2017 at 23:50

    THIS BLOG IS SHIT! HER NOTES ARE WRONG AND USELESS. IF U WANT TO DO GOOD ON YOUR EXAMS THAN DON'T USE THIS NOTES FOR REVISION.

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    1. Phoebe6 March 2017 at 01:30

      read her bio please, it is not supposed to be 100% right

      "This blog was originally set up for my own revision purposes, and not for other people to read, so you can't rely on everything that I have written. "

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    2. Unknown28 May 2017 at 08:25

      This comment has been removed by the author.

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  4. Trutech Products26 October 2017 at 00:35

    Step-Down Transformer is the one that converts a high-voltage and low-current into a low-voltage, high-current power. These are mostly required in the domestic consumption. These are designed to withstand electrical impulses and thermal and dynamic stresses. It ensures low power loss, low maintenance cost, and low noise.

    Transformer Manufacturers In India

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  5. Trutech Products10 May 2018 at 03:36

    Nice information, Thanks for sharing.
    Transformer Manufacturers In India | Transformer Manufacturers In Mumbai

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