LUN 2456.01-8

LUN 2456.01-8 static inverter for L-39 Albatros

LUN 2456.01-8 is a three-phase aircraft static inverter used in the electrical system of the Aero L-39 Albatros trainer aircraft. The unit converts direct current from the aircraft onboard power supply into three-phase alternating current for equipment that requires stabilized 36 V / 400 Hz AC power. Unlike rotary converters, LUN 2456.01-8 is a semiconductor-based static converter without rotating parts, which makes it suitable for continuous operation in the aircraft electrical and avionics environment.

Power conversion function of LUN 2456.01-8

The main function of LUN 2456.01-8 is conversion of 27 V DC aircraft power into three-phase 36 V AC power at 400 Hz. This type of power supply is required by several flight, navigation and indication instruments installed on the L-39. The inverter forms a sinusoidal three-phase output with phase displacement between phases, allowing aircraft equipment designed for three-phase AC operation to work from the DC onboard network.

Use in the L-39 onboard electrical system

On the L-39 Albatros, LUN 2456.01-8 is connected with the aircraft 36 V / 400 Hz alternating-current system. The source context indicates that the inverter supplies gyroscopic, navigation and indication instruments, including standby attitude indicators, turn-and-slip indication equipment, remote position transmission instruments, LUN 1180 variometer-related equipment and LUN 1530 three-pointer indicator circuits, depending on aircraft configuration and documentation. Exact equipment powered by the inverter should be confirmed against the aircraft wiring diagram and maintenance documentation.

Installation area of LUN 2456.01-8

According to the supplied context, the LUN 2456.01-8 static inverter is installed in the nose / lower-fuselage avionics compartment of the L-39 aircraft. Access is normally provided through removable service panels in the forward fuselage area. The installation location allows the unit to be connected to avionics and instrument power circuits while remaining accessible for inspection, removal, replacement and troubleshooting during maintenance.

Construction of the LUN 2456.01-8 inverter

LUN 2456.01-8 is a static semiconductor inverter. The source context describes the operating principle as a transistor-based power amplifier circuit that forms three AC phases shifted by 120 degrees. The unit uses natural cooling through its heat-dissipating housing. Since there are no rotating components, maintenance is focused on electrical checks, connector condition, mounting integrity, output voltage and frequency verification, insulation condition and conformity with aircraft power system requirements.

Identification and supply of LUN 2456.01-8

When ordering LUN 2456.01-8, it is important to specify the complete designation, aircraft type and required condition of the unit. The buyer should confirm whether the request is for a serviceable unit, overhauled unit, new old stock item or unit for repair / exchange. Documentation requirements may include product passport, serviceability certificate, test report, storage records or aircraft release documentation, depending on the transaction and end-user requirements.

Product Type: Three-phase aircraft static inverter / DC-to-AC converter
Designation: LUN 2456.01-8
Alternative Designations: ЛУН 2456.01-8, LUN2456.01-8, LUN 2456.01 8
Function: Conversion of aircraft DC power into three-phase AC power
Application / Where Used: L-39 Albatros onboard electrical and avionics power system
Compatible Aircraft / Equipment: Aero L-39 Albatros family aircraft according to documentation
Manufacturer Context: MESIT / Czechoslovak and Czech aviation equipment production context
Input Current Type: Direct current
Nominal Input Voltage: 27 V DC
Input Voltage Range: 24.3–29.8 V DC
Output Current Type: Three-phase alternating current
Output Voltage: 3 × 36 V AC
Output Frequency: 400 Hz
Output Power: 40 VA
Output Waveform: Sinusoidal, according to source context
Phase Connection: Delta connection, according to source context
Phase Shift: 120° between phases, according to source context
Cooling: Natural cooling through radiator-type housing
Installation Area: Nose / lower-fuselage avionics compartment of L-39, according to source context
Related Powered Equipment: Gyroscopic, navigation and indication instruments requiring 36 V / 400 Hz AC power, depending on aircraft configuration
Condition: New / As-Stored / Overhauled / Serviceable, depending on availability
Technical Documentation: Product passport, test report, serviceability certificate, storage records and aircraft maintenance documentation if available

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Warranty
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Extended warranty is available upon request and is agreed individually; it may affect the final product price.