To check the cycle for DV, which relays need to be de-energized?

To check the cycle for DV, which relays need to be de-energized?

• A. HV ahead and HV in advanced
• B. H energized and V in danger
• C. HV de-energized
• D. H and V in the clear

Answer: (C)

The focus of this question is on understanding the process of checking the cycle for DV (Diverging Routes) within line control systems. The correct answer identifies that the HV (High Voltage) relay must be de-energized. When dealing with control systems, particularly in contexts that involve safety and the operation of trains or power systems, there are specific protocols that must be followed to ensure that the system is safe for operation. In this case, de-energizing the HV relay is essential because it typically indicates that the high voltage status is no longer active, thus preventing any potential hazards associated with electrical currents while the cycle is being checked. By ensuring the HV relay is de-energized, operators can confirm that the environment is safe for inspections or other operational procedures related to the DV cycle. This is a standard safety measure to avoid any unexpected incidents during maintenance or checks. The other choices involve relays or statuses that are not directly indicated as necessary for the cycle check of DV. For instance, relays that are energized could pose a risk during the checking process, instead of providing a clear and safe condition for evaluation. Hence, focusing on the status of the HV relay being de-energized directly pertains to ensuring the line control protocols

The focus of this question is on understanding the process of checking the cycle for DV (Diverging Routes) within line control systems. The correct answer identifies that the HV (High Voltage) relay must be de-energized.

When dealing with control systems, particularly in contexts that involve safety and the operation of trains or power systems, there are specific protocols that must be followed to ensure that the system is safe for operation. In this case, de-energizing the HV relay is essential because it typically indicates that the high voltage status is no longer active, thus preventing any potential hazards associated with electrical currents while the cycle is being checked.

By ensuring the HV relay is de-energized, operators can confirm that the environment is safe for inspections or other operational procedures related to the DV cycle. This is a standard safety measure to avoid any unexpected incidents during maintenance or checks.

The other choices involve relays or statuses that are not directly indicated as necessary for the cycle check of DV. For instance, relays that are energized could pose a risk during the checking process, instead of providing a clear and safe condition for evaluation. Hence, focusing on the status of the HV relay being de-energized directly pertains to ensuring the line control protocols