These mini frequency converter units convert the primary AC power of aircraft from 115 Volt, 360-800 Hz to 115 and 230 Volt, 60 Hz. They are located in the Lavatory, the Cabin, and the Crew Rest Areas. Depending on the application, the unit is available without an enclosure as Models 4056 & 4074. 115 Volt and 230 Volt supplies are available alternatively at the nine pole D-Sub (Pin) receptacle. The EMI filtering complies with RTCA/DO 160.
Since they require no forced air and operate with ordinary convection cooling, they are absolutely maintenance-free. The Converters are overload capable and short-circuit protected, and have been qualified in accordance with latest AIRBUS-standards for interior equipment, mainly based on RTCA/DO 160.