The key difference lies in how the line's electrical parameters (resistance, inductance, and capacitance) are treated.

• In a short transmission line, only the series resistance and inductance are considered.

• In a medium transmission line, the shunt capacitance is also considered, but it is typically modeled as a "lumped" value, concentrated at a single point or at the ends of the line (e.g., using a Pi or T model).

• In a long transmission line, all parameters are treated as being "distributed" uniformly along the length of the line. This requires more complex mathematical models to accurately analyze voltage drop, power flow, and stability.

Understanding these characteristics is vital for designing the appropriate support structures, conductors, and insulation for the intended application. Our extensive range of overhead transmission line equipment, including tension stringing equipment and various tools, is designed to support the construction and maintenance of all three types of lines, ensuring optimal performance and reliability.