In a substation, disconnects that normally conduct current must remain in what state?

The disconnects in a substation that normally conduct current must remain closed during standard operation. This is crucial for maintaining the electrical flow necessary for the entire power system. When disconnects are closed, they allow electricity to pass through and enable the connections between different segments of the grid.

In the context of substation operations, it's essential that these disconnects are kept closed to ensure reliability and continuity of the electrical supply to consumers. Should these disconnect switches open unintentionally or remain open when current is expected to flow, it could lead to power outages or disruptions, affecting both consumers and the integrity of the power distribution system.

The other states, such as open, neutral, and isolated, indicate that the disconnects are not allowing current to flow, which is not desirable under normal operating conditions for disconnects intended to conduct current. Hence, the correct state for these disconnects during normal operations is closed.