Dielectric failure occurs when an insulating material loses its ability to withstand an electric field, leading to a breakdown and allowing current to pass through. This phenomenon can result from excessive voltage, material defects, environmental conditions, or prolonged stress, and can cause significant damage to electrical systems.
Transient voltage refers to temporary, short-duration spikes or surges in electrical voltage that can occur due to events like lightning strikes, switching operations, or faults in the power system. These voltage spikes can cause significant damage to electrical equipment and systems if not properly managed or mitigated.
Rated voltage is the specific electric potential difference that an electrical device or equipment is designed to operate at optimally. Exceeding this voltage can reduce the lifespan of the device or lead to dangerous operational scenarios.
An over-voltage relay is a protective device designed to monitor the voltage level in electrical systems and activate a circuit breaker if the voltage exceeds a pre-set level, preventing damage to equipment and ensuring safety. It is widely used in power systems to maintain voltage stability and protect electrical components from potential over-voltage harms, such as insulation breakdown or equipment failure.