What is the MVA limit for a transmission line with a conductor rated at 180 MVA and a rated line side current transformer of 160 MVA?

The MVA limit for a transmission line is determined by several factors, including the rating of the conductor and the capacity of the associated equipment, such as current transformers. In this scenario, the conductor has a maximum rating of 180 MVA, which refers to the highest level of power the conductor can handle without overheating or becoming damaged. However, the current transformer is rated at 160 MVA.

When it comes to establishing the operational MVA limit, the lower of these two ratings is typically taken as the governing limit. This is because the current transformer must be able to accurately measure the current flowing through the line without saturating or becoming unreliable, and its lower capacity would potentially restrict the total power that can be transmitted safely and effectively.

Therefore, the MVA limit for the transmission line is constrained by the rating of the current transformer, which is 160 MVA in this case. This. ensures the protection and operational safety of the electrical system involved. Thus, the MVA limit for this transmission line is correctly represented by the 160 MVA rating of the current transformer.