Why must the electric portion slides be fully retrieved before coupling?

The necessity for fully retrieving the electric portion slides before coupling is fundamental to ensuring that mechanical coupling is completed prior to making any electrical connections. This sequence is critical because it protects the integrity of both the mechanical and electrical systems. If the electrical connections are made before the trainsets are properly coupled, there is a risk of creating an electrical fault, which could lead to equipment damage or malfunction.

Mechanical coupling establishes a secure physical connection between train cars, allowing them to operate as a unified unit. It is essential that this mechanical connection is firmly in place before engaging electrical systems to avoid any potential issues that could arise from a misalignment during the coupling process. By adhering to this practice, operators maintain safety and functionality within the train’s systems, reducing the likelihood of failures during operation.