What characteristic defines an overvoltage condition?

An overvoltage condition is defined by a situation where the voltage level exceeds the normal operating range for a specific system or equipment. This typically occurs when the voltage rises significantly above the maximum voltage ratings, potentially leading to damage in electrical components, malfunction, or reduced lifespan.

In electrical systems, normal operating ranges are established to ensure safe and efficient functioning. When the voltage surpasses these thresholds, it can result in overheating, arcing, and other forms of electrical stress, which can be detrimental to both performance and safety. Identifying and addressing overvoltage conditions is crucial in maintaining the health of electrical systems and preventing catastrophic failures.

The other options pertain to different voltage conditions that do not characterize an overvoltage scenario. For example, a voltage being below a required threshold indicates an undervoltage condition rather than overvoltage. Additionally, constant voltage under load refers to stable operation within acceptable limits, while minimal voltage fluctuations suggest stable conditions rather than excessive voltage.