What is the required relay state for HV relay to function?

What is the required relay state for HV relay to function?

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

Answer: (A)

The correct answer indicates that for the high-voltage (HV) relay to function correctly, both the horizontal (H) and vertical (V) components must be in the clear position. This means that there should be no obstructions or issues in both dimensions that the relay monitors to ensure its proper operation. The "in the clear" state typically signifies that all conditions are safe, allowing the relay to remain in its designated state without unnecessary trips or alerts. In contrast, the other options suggest various unsafe or undesirable conditions. For instance, if the V is in danger or the HV is de-energized, it indicates a potentially hazardous situation where the relay may not function correctly, potentially leading to a failure to protect the circuit. Moreover, stating that HV should be energized while DV is de-energized does not align with the operational requirements for establishing a protective state, as it could lead to unpredictable relay behavior. Finally, describing HV as "in advanced" and "ahead" lacks the clarity needed regarding safe operational parameters, as these terms do not specifically address the essential conditions for relay functionality.

The correct answer indicates that for the high-voltage (HV) relay to function correctly, both the horizontal (H) and vertical (V) components must be in the clear position. This means that there should be no obstructions or issues in both dimensions that the relay monitors to ensure its proper operation. The "in the clear" state typically signifies that all conditions are safe, allowing the relay to remain in its designated state without unnecessary trips or alerts.

In contrast, the other options suggest various unsafe or undesirable conditions. For instance, if the V is in danger or the HV is de-energized, it indicates a potentially hazardous situation where the relay may not function correctly, potentially leading to a failure to protect the circuit. Moreover, stating that HV should be energized while DV is de-energized does not align with the operational requirements for establishing a protective state, as it could lead to unpredictable relay behavior. Finally, describing HV as "in advanced" and "ahead" lacks the clarity needed regarding safe operational parameters, as these terms do not specifically address the essential conditions for relay functionality.