An isochronous governor has what kind of droop setting?

An isochronous governor is designed to maintain a constant speed in a generator regardless of load changes. In this context, a droop setting indicates how much the speed of a generator will decrease as the load increases. An isochronous governor operates at a droop of 0%, meaning that it will not allow any decrease in speed despite changes in load.

This functionality is critical for applications where maintaining a constant frequency is essential, such as in synchronous generators used in power systems. By having a droop setting of 0%, the isochronous governor ensures that the frequency remains stable as it compensates for variations in demand without introducing speed fluctuations.