Definitions for Hybrid HVDC Circuit BreakersStandard Definitions for AC Circuit BreakersLimitations: The standard definitions for AC circuit breakers do not directly translate to HVDC protection because the time frames and dynamics involved are different.Time Frames: AC circuit breakers have a relatively long time to act compared to DC circuit breakers. Typically, the fault currents that an AC circuit breaker interrupts will have nearly reached steady state by the time the protection acts, but t