Are the DC converters redundant?

• A. Yes, 1 DC converter can power the entire DC system
• B. No, both are required.
• C. No, external power is needed.
• D. Only when both converters are online.

Answer: (A)

Redundancy in the DC power system means there are multiple independent converters so power can be maintained even if one unit fails. In this helicopter, each DC converter is capable of supplying the entire 28 V DC bus by itself, so the load stays powered even if the other converter is unavailable. That’s why one converter can power the whole DC system, providing reliable operation without needing both online. External power isn’t required for normal operation, and you don’t need both converters active to run the loads—the two units exist to ensure backup and continuity, not because both must be supplying power at all times.