Consider the following statements regarding aluminum conductor steel reinforced conductors in transmission lines. State whether these statements are true or false. (a) It is cheaper than copper conductors of equal resistance.

Consider the following statements regarding aluminum conductor steel reinforced conductors in transmission lines. State whether these statements are true or false. (a) It is cheaper than copper conductors of equal resistance. (b) Corona losses are reduced in it because of the larger diameter of the conductor. (c) It has lesser mechanical strength, so it needs more support for a particular length of the transmission line.

Right Answer is:

(a) True, (b) True (c) False

SOLUTION

  • Aluminum is light in weight and is having good conductivity. But it is having very low tensile strength.
  • It has lesser mechanical strength, so it needs more support for a particular length of the transmission line.
  • To increase the tensile strength, steel is used as the core of the conductor.
  • A good example of steel core aluminum is an ACSR (Aluminium Conductor Steel Reinforced) conductor.
  • ACSR has high tensile strength, good conductivity, and is economical.
  • ACSR conductor is widely used in transmission lines and as an inner conductor of coaxial cable.
  • Corona losses are reduced because of the larger diameter of the conductor.
  • It is cheaper than copper conductors of equal resistance.
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