Which of the following statements about transient impulses is true?

Transient impulses refer to short-duration voltage or current spikes that can occur in electrical systems due to various reasons, such as lightning strikes, switching events, or faults. The correct statement about transient impulses is that they can cause latent damage over time.

When a transient impulse occurs, it may not necessarily have an immediate impact on the electrical components. However, the stress imposed by these impulses can lead to gradually accumulating damage to insulation systems, circuit components, and connectors. This gradual wear and tear can eventually result in equipment failure or reduced lifespan, even if the initial impulse doesn't cause immediate visible damage. For instance, repeated exposure to transient surges can degrade insulating materials, leading to insulation breakdown.

In contrast, transient impulses are known to affect electrical distribution equipment, as their nature involves high-frequency transients that can interfere with the normal operating conditions of such systems. They are not limited to high-voltage events; they can occur at various voltage levels and can have serious consequences for electrical equipment in both residential and industrial settings.

Understanding the effects of transient impulses is crucial for properly designing and implementing protective measures, such as surge protectors and proper grounding techniques, to mitigate potential damage to electrical systems over time.