What is the purpose of channel voting in core protection?

• A. A mechanism where multiple channels contribute to a single, consensus trip decision.
• B. Each channel acts independently to trip.
• C. Operator manually aggregates channel signals for trip.
• D. A sequential test of each channel is used to determine a trip.

Answer: (D)

Channel voting relies on multiple, redundant signals to produce one trusted trip decision. Each channel monitors the same condition, and protection logic checks their indications to decide when a trip is warranted. Using a sequential test of each channel means the system evaluates channels one after another, building the decision from the collective input rather than relying on a single signal. This approach helps prevent a false trip caused by a faulty or drifting channel and ensures the trip occurs only when enough channels agree in the sequence, providing a robust and deterministic protection action for the core.