PTS-800BM
Static Inverter
Description
Aircraft static converter PTS-800BM
The PTS-800BM is an aircraft three-phase static power converter used in onboard electrical power systems. It converts 27 V DC from the aircraft network into three-phase AC power for equipment that requires 400 Hz supply. Unlike rotary converters, the unit has no motor-generator section. Power conversion is handled by electronic modules, with regulation and protection circuits inside the converter. In aircraft installation, the PTS-800BM is part of the AC power supply chain for avionics, instruments, navigation equipment and other onboard consumers.
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Electrical conversion through PTS-800BM
During operation, the PTS-800BM receives DC input power and forms a regulated three-phase AC output. The internal scheme includes inverter sections and a three-phase forming stage. The control system keeps the output voltage and frequency within the required range and disconnects or protects the unit under abnormal electrical conditions. This matters during troubleshooting, because a fault may come from the converter itself, the input DC line, the connected AC load, or the cooling circuit. The aircraft wiring diagram should be checked before replacing the unit.
PTS-800BM in onboard AC power systems
The converter is used where aircraft equipment needs three-phase 400 Hz AC power, while the available source is the aircraft DC network. Typical consumers include avionics blocks, navigation units, instrument systems and other electrical equipment installed on helicopters and aircraft. PTS-800BM is associated with Mi-8 / Mi-17 / Mi-171 / Mi-172 helicopter applications, and with aircraft such as An-148, Tu-204 and Tu-214. The exact installation may differ by aircraft version, equipment set and modification standard.
Construction of the PTS-800BM converter
The PTS-800BM is built in a rectangular housing containing power electronic modules, printed circuit boards for control and protection, input and output filters, and an integrated cooling fan. The fan works as part of the thermal control system and starts when the internal temperature reaches the specified level. For aircraft mounting, the converter can be installed in a shock absorbing frame. This frame reduces vibration and mechanical loads transferred to the unit, which is important for helicopter installations and equipment bays with high vibration.
Identification and ordering of PTS-800BM
Before ordering, the marking on the converter should be compared with the aircraft parts catalog, electrical system manual or equipment list. It is also useful to check whether the unit is required with the shock mount frame or without it, because weight and installation fit differ. For correct selection, provide the aircraft type, existing converter marking, required output power, voltage system and, if possible, a photo of the data plate. The product is also known under alternative designations PTS-800BM and ПТС-800БМ.
PTS-800BM: identification and purpose
PTS-800BM 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 PTS-800AM, PTS-1600, PTS-500S, PTS-250AM. 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 PTS-800BM 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: PTS-800BM
Alternative Designations: PTS-800BM; PTS 800BM; ПТС-800БМ
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
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Retained Technical Data:
Product Type: Static Inverter
Primary Designation: PTS-800BM
Alternative Designations: PTS-800BM; PTS 800BM; ПТС-800БМ
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
Retained Technical Data:
Product Type: Aircraft three-phase static power converter
Function: Conversion of 27 V DC power into three-phase 400 Hz AC power
Application / Where Used: Aircraft onboard electrical power systems
System / Installation Area: AC power supply system / electrical equipment bay
Compatible Aircraft / Equipment: Mi-8, Mi-17, Mi-171, Mi-172, An-148, Tu-204, Tu-214 and other aircraft requiring three-phase 400 Hz AC power
Input Voltage: 27 V DC
Output Voltage: 200/115 V AC
Number of Output Phases: 3
Output Frequency: 400 Hz
Rated Output Power: 800 VA
Load Power Factor: 0.8
Efficiency: Not less than 0.7
Operating Mode: Continuous operation
Cooling: Forced air cooling with integrated fan
Fan Activation Temperature: 94…98 °C
Weight with Shock-Mount Frame: 15 kg
Weight without Frame: 14 kg
Overall Dimensions: 418 × 200 × 260 mm
Construction: Enclosure with power modules, control and protection PCBs, filters and cooling fan
Technical Documentation: Technical and operating documentation 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.
In-person viewing of parts held in stock at our Dubai warehouse can be arranged on request.
Payment & delivery terms