Opening the bus tie switch will allow battery operation for how long?

Opening the bus tie switch is a critical procedure during battery operation, as it allows the system to operate independently using battery power. In the context of the operational time provided by the battery after opening the bus tie switch, the correct answer indicates that battery operation can be sustained for approximately 30 minutes. This timeframe is based on the design and capacities of the batteries employed in the system, which are engineered to provide sufficient power for a limited duration and manage essential operations without reliance on external power sources.

This duration ensures that, in the event of a power failure or the necessity to operate independently, teams have enough time to either rectify the issue, implement emergency procedures, or safely shut down non-essential systems to preserve battery life. Understanding this concept is crucial for effective emergency response and system management within the operational environment.