Transmission and Distribution in an electrical power system consists primarily with conductors and lots of conductors. Overhead power lines usually uses ACSR or Aluminum Cable Steel Reinforced. As the name describes, this cable is made up of two metallic components. An Aluminum, which is known to be an excellent conducting medium and not to mention cheaper compared to other metals with the same or similar characteristics. The other component of course is the steel which serves as the main support of the conductor since compared to an aluminum, steel has a higher tensile strength.
ACSR Conductor |
ACSR conductors are also known for its aluminum to steel ratio (i.e. 18/1, 26/7, 45/7). This also describes the stranding of every ACSR cable. ACSRs are also known to have code words which individual has different intrisic characteristics and they are usually taken from the names of birds others are from animals.
The table below shows a simple listing of different types of ACSR conductors with its respective resistance and reactance. This parameters affect the value of impedance of the wires thus also affects the power flow when it is put into service. Knowing these is very important in System's Loss Analysis especially in analyzing voltage drop in transmission lines.
To have a more focused discussion with ACSR conductors, you can refer to this Link.
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