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What are the types of metallic transmission lines and and their losses?

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What are the types of metallic transmission lines and and their losses?

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  1. Very vague question.

    They are all copper or aluminum.

    Short and medium distances they are high voltage AC, either 50hz or 60hz, voltages in the range of 6kV to 200 kV.  Loses are resistive, inductive, and capacitive.

    Long distance lines tend to use very high voltage DC, from 100kv to 500 kv. Losses are mostly resistive.

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