LUN 2456.01-8
Static Inverter
Description
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.
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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.
LUN 2456.01-8: identification and purpose
LUN 2456.01-8 is classified as a Static Inverter and converts aircraft DC power into AC with the required parameters without a rotating motor-generator. Select it by the complete designation, series, execution, marking and approved documentation. Similar lettering, housing or connector geometry does not establish identical operating data.
This historical category contains several types of transducing devices. PT, PO and PTS products relate to electrical-power conversion, while PMI, PMT and PMM designations identify vacuum-gauge transducers. Each page therefore follows the actual product function rather than the broad category name. A suffix, series number or extra letter can indicate a materially different circuit, pressure range, rating or interface.
Function and operating circuit
The item converts aircraft DC power into AC with the required parameters without a rotating motor-generator. Exact input and output conditions depend on the execution. For a power converter, verify voltage, current type, frequency, phase arrangement, rated output, connectors and cooling. For a vacuum transducer, verify the measurement principle, pressure range, operating mode, vacuum connection and compatible measuring instrument.
Numerical values retained from the original catalogue record appear in Technical Details and must be compared with the passport for the actual unit. An aircraft platform or installation system is not assigned by analogy when a reliable source is unavailable.
Selection and compatibility checks
Before replacement, compare the primary and alternative designations, series, input and output ratings, dimensions, mass, connectors, mounting, cooling and documented environmental limits. For a vacuum sensor, additionally compare the conversion constant, emission current or heater resistance where the passport specifies those values.
Related members of one family may use different voltage, frequency, power, pressure range, mounting interface or purpose. The related links below support catalogue navigation and do not establish interchangeability. General technical background is available under Static Inverter.
Incoming inspection and installation
Check the marking and supporting records, housing, connectors, terminals, vacuum fitting, mounting points, seals and any evidence of overheating, impact or corrosion as applicable. Bench testing must follow the documentation for the exact execution; an improvised test voltage or vacuum regime can damage the product.
Install the unit only in the intended circuit with the documented polarity, supply mode, load, cooling and safety provisions. After installation, complete the prescribed functional check. External integrity alone does not demonstrate serviceability or calibration.
Related catalogue positions
Functionally related catalogue products include LUN 2458-8, POS-1000A, PTS-25M, PTS-250. They are selected by actual type and family for navigation and do not imply compatibility. More positions are available in the Power Transducers category.
Enquiry information
An enquiry for LUN 2456.01-8 should state the exact designation, quantity, required condition, marking photograph, delivery scope and required documents. When available, include the designation of the equipment and item being replaced. Price, actual availability, lead time and condition of a specific unit are confirmed separately.
Technical details
Product Type: Static Inverter
Primary Designation: LUN 2456.01-8
Alternative Designations: LUN 2456.01-8; LUN2456.01-8; LUN 2456.01 8; ЛУН 2456.01-8
Function: converts aircraft DC power into AC with the required parameters without a rotating motor-generator
Selection Basis: Exact designation, execution, marking and documentation for the specific equipment
Application: Only as supported by the passport, illustrated parts catalogue or approved installation documentation
Interchangeability: Not established by a related designation, matching base, housing or appearance alone
Inspection: Verify electrical ratings, contacts or connector, mounting, construction and required operating mode
Enquiry Data: Designation, quantity, condition, marking photograph, delivery scope and required documents
Documentation: Product passport and approved operating or repair documentation
Category: Power Transducers
All specificationsCollapse specifications
Retained Technical Data:
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
Technical Documentation: Product passport, test report, serviceability certificate, storage records and aircraft maintenance documentation if available
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms