Adjustable speed drives or ASDs, are often categorized as "sensitive" to power quality phenomena, which means ASD could also stand for "another sensitive device." I am still not sure what "sensitive" means relative to hardware. Susceptible seems like a far better choice of words.
The United States is undergoing a major shift in the way it generates and consumes electricity. In the midst of such visible changes, strong metrics are enlightening—even if they are, in some ways, stating the obvious.