LUN 2458-8

LUN 2458-8 aircraft static inverter

LUN 2458-8 is an aircraft single-phase static inverter of Czechoslovak production, associated with Mesit / Technometra aviation equipment manufacturing. The unit converts DC power from the aircraft onboard electrical network into single-phase AC power for aircraft systems and instruments. It is used as a compact semiconductor inverter without rotating parts and is intended for stable power supply of onboard equipment requiring 115 V / 400 Hz alternating current.

Power conversion function of LUN 2458-8

The main function of LUN 2458-8 is conversion of aircraft DC input voltage into single-phase alternating current. According to the supplied context, the inverter operates from the standard 27–29 V DC aircraft power network and provides 115 V AC at 400 Hz on the output. This output format is typical for aviation instrument, navigation and radio-electronic equipment requiring stabilized high-frequency alternating current rather than direct current from the main aircraft bus.

Application on L-410 and L-39 aircraft

The supplied context indicates that LUN 2458-8 is used on Let L-410 Turbolet regional aircraft and Aero L-39 Albatros trainer aircraft, depending on aircraft configuration and documentation. The inverter may supply indication systems, fuel quantity transmitter circuits, attitude instruments and other units within the flight-navigation and avionics complex. Since equipment fit may vary by aircraft version, modernization and wiring configuration, the exact consumer circuits should be confirmed by the aircraft electrical diagrams and maintenance documentation.

Static semiconductor design of LUN 2458-8

LUN 2458-8 is a semiconductor static converter, which means the conversion process is performed electronically without an electromechanical rotating machine. This construction reduces moving mechanical elements and allows the unit to be installed as a compact aviation power conversion block. The source context describes the unit as a monoblock metal housing with a ribbed cooling radiator. Cooling is passive by air circulation and heat dissipation through the external housing surface.

Installation and connection features

The LUN 2458-8 inverter is built as a compact rectangular aircraft unit. The housing has mounting lugs on the lower panel for bolted installation on an aircraft base, bracket or shock-mounted frame, depending on the installation scheme. The supplied context mentions a square plug connector, such as KSA or PT06 type context, for power input and output connections. During replacement or inspection, technicians should verify connector condition, mounting security, grounding, insulation and output voltage / frequency under load.

Identification and ordering of LUN 2458-8

When ordering LUN 2458-8, the full designation should be specified to avoid confusion with other LUN-series aircraft converters, including three-phase 36 V units and other inverter versions. The buyer should confirm the aircraft type, required condition, documentation package and whether the unit is needed as serviceable, overhauled, as-stored or for repair / exchange. Related checks may include input voltage compatibility, output voltage, connector type, mounting configuration and required certification documents.

Product Type: Single-phase aircraft static inverter / DC-to-AC converter
Designation: LUN 2458-8
Alternative Designations: ЛУН 2458-8, LUN2458-8, LUN 2458.8
Function: Conversion of aircraft DC power into single-phase AC power
Application / Where Used: Aircraft onboard electrical and avionics power system
Compatible Aircraft / Equipment: Let L-410 Turbolet and Aero L-39 Albatros according to supplied context and aircraft documentation
Manufacturer Context: Mesit / Technometra, Czechoslovak aviation equipment production context
Input Current Type: Direct current
Input Voltage: 27–29 V DC, according to supplied context
Nominal Aircraft Power Network Context: 28 V DC aircraft power system
Output Current Type: Single-phase alternating current
Output Voltage: 115 V AC
Output Frequency: 400 Hz
Conversion Type: Semiconductor static conversion, without rotating parts
Cooling: Passive air cooling through ribbed radiator housing
Housing Type: Compact rectangular monoblock metal housing
Mounting: Lower mounting lugs for bolted installation on aircraft frame or base
Connector Context: Square plug connector, KSA or PT06 type context according to supplied data
Related Powered Equipment: Indication systems, fuel quantity transmitter circuits, attitude instruments, navigation and avionics equipment depending on aircraft configuration
Weight Reference: Approximately 1.5–3.2 kg for equipment of this class, depending on shielding and version
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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Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.