Steel Skywire - Short Circuit Capacity

Hello,

When doing grounding studies, it is common practice to calculate the amount of fault current that will return to the source through the skywires and distribution neutrals when calculating the GPR. However, does anyone ever compare the short circuit capacity with the expected fault current through the skywires to see if they can handle the amount of current.

I received data for a OPGW cable that is used for a generating station that I am analyzing and it has a short circuit capacity as 33000 Amps^2*sec which is only 256 Amps for a 0.5 second fault. The fault current levels that I calculated that will be going through the skywires is much higher. Am I interpreting this correctly?

The skywires are meant for lightning protection and given the very short duration (usec) they are OK but for a power system fault it doesn't seem very good.

Is anyone have any experience or knowledge on this?