What does a synchroscope help with in a 3-phase generator setup?

A synchroscope is a crucial instrument in a 3-phase generator setup as it indicates the phase relationship between different electrical systems. It provides real-time visual feedback on the synchronization of the phases of the generator and the grid or another generator. This is particularly important in applications where multiple generators are connected in parallel, as improper synchronization can lead to issues such as power surges or system instability.

By displaying whether the phases are in sync, the synchroscope helps operators determine the optimal moment to connect another generator or to align it with the existing system, ensuring smooth operation and minimizing disturbances in the electrical network. The ability to observe the relative phase angles greatly aids in maintaining system stability and integrity.

The other options, while related to generator operation, do not capture the essential function of the synchroscope. Regulating voltage output pertains to voltage control mechanisms, determining the type of current involves identifying AC or DC types, and measuring frequency fluctuations deals with the assessment of frequency stability rather than phase relationships.