In addition to fault lamps, which indicator is critical for ensuring generator safety?

Frequency stability is a critical indicator for ensuring generator safety because it directly impacts the generator's performance and reliability. Generators operate within specific frequency ranges, and maintaining a stable frequency is essential for the synchronized operation of the generator with the grid or other power sources. If the frequency fluctuates too much, it can lead to equipment malfunction, potential damage, or unsafe operating conditions.

Stability in frequency helps ensure that the generator is producing power consistently and effectively, which is crucial for maintaining electrical system integrity and preventing outages. Monitoring frequency is part of established operational standards, making it vital for generator safety protocols. Other options, while important in various contexts, do not relate as directly to safety in the same way as frequency stability.