Which term describes a power system that can automatically disconnect power when a fault is detected?

Which term describes a power system that can automatically disconnect power when a fault is detected?

• A. Fault-managed power system
• B. Uninterruptible power system
• C. Low voltage system
• D. Cable fault detection

Answer: (A)

This question is about automatic fault isolation in a power system. A fault-managed power system is designed to detect faults and automatically disconnect the affected portion of the network using protective relays and breakers. This rapid disconnection protects equipment, prevents damage from the fault, and helps maintain overall system safety and reliability. The other options don’t describe this automatic fault-clearing behavior: an uninterruptible power system is meant to provide continuous power during outages, not to automatically disconnect on faults; a low voltage system simply indicates the voltage level without implying automatic disconnection; cable fault detection is about sensing where faults occur, not about automatically disconnecting power itself.

This question is about automatic fault isolation in a power system. A fault-managed power system is designed to detect faults and automatically disconnect the affected portion of the network using protective relays and breakers. This rapid disconnection protects equipment, prevents damage from the fault, and helps maintain overall system safety and reliability.

The other options don’t describe this automatic fault-clearing behavior: an uninterruptible power system is meant to provide continuous power during outages, not to automatically disconnect on faults; a low voltage system simply indicates the voltage level without implying automatic disconnection; cable fault detection is about sensing where faults occur, not about automatically disconnecting power itself.