Siemens Fault Finding Practice Test 2025 – Complete Exam Preparation

After raising the local pantograph with the crank handle, the correct step is to push the white excite button at the SIV (Static Inverter). This action is critical because it allows the system to receive the voltage necessary for powering the train's electrical systems. The SIV converts the incoming electrical energy into a usable form for onboard systems, and activating it ensures that the raised pantograph establishes a proper electrical connection with the overhead lines.

This subsequent step is essential for enabling the train to operate effectively and safely after the pantograph is in position. It ensures that power is available for traction and other operational needs, making it a key part of the procedure following the raising of the pantograph.

While activating cab controls, resetting circuit breakers, and performing a system check are all important procedures in the operation and maintenance of train functionality, they do not immediately follow the act of raising the pantograph. Instead, they would typically pertain to different stages of preparing the train for operation or troubleshooting issues rather than directly associated with the pantograph's operation.