In what situation may the main battery switch be left closed during shutdown?

In what situation may the main battery switch be left closed during shutdown?

• A. During maintenance checks
• B. On RCL to maintain link during the short-term securement
• C. In normal service
• D. When the locomotive is powered down entirely

Answer: (B)

The situation focuses on keeping power to the control link alive. When a locomotive is operating as a Remote Control Locomotive (RCL) or is on an RCL setup, you may need to preserve the control link during a brief shutdown. Leaving the main battery switch closed in that moment ensures the RCL link stays powered, so the locomotive remains controllable and secured during the short-term stop. If you cut power in this scenario, the link could drop and you lose control or visibility, which isn’t desirable during a quick securement. In other shutdown contexts, such as routine power-downs or maintenance where the aim is to conserve battery life or fully isolate systems, the switch would normally be opened according to procedure.

The situation focuses on keeping power to the control link alive. When a locomotive is operating as a Remote Control Locomotive (RCL) or is on an RCL setup, you may need to preserve the control link during a brief shutdown. Leaving the main battery switch closed in that moment ensures the RCL link stays powered, so the locomotive remains controllable and secured during the short-term stop. If you cut power in this scenario, the link could drop and you lose control or visibility, which isn’t desirable during a quick securement.

In other shutdown contexts, such as routine power-downs or maintenance where the aim is to conserve battery life or fully isolate systems, the switch would normally be opened according to procedure.