Which of the following is used in urban areas where the span is lower but high conductivity is required?

Concept:

• All Aluminum Conductors (AAC) are commonly used for overhead electrical distribution lines in urban areas with shorter spans between poles or structures.
• They are known for their lightweight construction and good conductivity, which makes them suitable for achieving high connectivity in areas with lower spans.
• AAC conductors are cost-effective and easy to install, making them a practical choice for urban power distribution networks.

Additional Information Following are the different types of conductor used in transmission line-

1. AAC(All Aluminium Conductor)

• Aluminium strands are only used.
• It has low tensile strength and low resistance.
• It suffer from damage frequently.

2. All steel

• Strands of steel conductors are used.
• it has high tensile strength but has large resistance.
• It is heavy in weight and require.
• it is seldom used in the transmission line.
• it is used for protection from lightning.

3. AAAC (All Aluminium Alloy Conductor)

• AAAC is made out of heat treated Aluminium-Magnesium-Silicon Alloy.
• It is used in low voltage range only.
• It is used where electricity theft is common and coastal areas to avoid corrosion.

4. ACSR (Aluminium conductor steel reinforced)-

• It consists of aluminium conductor strands with steel at its centre.
• It has high tensile and low weight.
• ACSR  is used as bare overhead transmission.
• It is used as primary and secondary distribution cable.
• ACSR is suitable for use in all practical spans on wood poles, transmission towers, and other structures.
• Hence ACSR is preferred over other available conductors.