BKNA115V Purpose and Function

The BKNA115V aerodrome power voltage control unit is designed to protect aircraft onboard electrical systems from connection to external AC ground power sources with unacceptable voltage or frequency parameters. The unit blocks connection if power quality does not meet defined limits and disconnects the source automatically if parameters deviate during operation.

BKNA115V Operating Principle

BKNA115V operates as a three-phase 115 V, 400 Hz voltage and frequency monitoring relay within the aircraft electrical system. It supervises aerodrome power and controls contactors depending on compliance with protection thresholds, ensuring safe integration of ground power.

BKNA115V Application

The BKNA115V unit is used in aircraft electrical systems of An-148, Il-114, Il-96-300, Tu-154M and Tu-204-100. It functions in continuous mode as a protective control device within the ground power interface circuit.

BKNA115V Configuration

The BKNA115V includes phase voltage monitoring circuits, time-delay protection logic, relay control outputs and power interface elements. All operating parameters are defined in manufacturer documentation.

Product Type: Aerodrome power voltage control unit
Function: Protection of onboard electrical network from improper AC ground power connection
Application / Where Used: Aircraft electrical power systems
System / Installation Area: Ground power interface circuit
Compatible Aircraft / Equipment: An-148, Il-114, Il-96-300, Tu-154M, Tu-204-100
Power Supply (DC): 24.0–29.4 V
Current Consumption (DC): Not more than 1.2 A
Current Consumption (AC 115 V, 400 Hz): Not more than 0.2 A
Monitored AC Voltage: 115 V, 400 Hz
Under-voltage Protection Threshold: 108–114 V connection block; 101–107 V disconnection with delay
Over-voltage Protection Threshold: 123–129 V
Time Delay (Under-voltage): 6.0 ± 0.9 s
Operating Mode: Continuous
Weight: Not more than 3 kg
Technical Documentation: Manufacturer passport and operational documentation

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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.