400Hz Avionics Equipment Testing Programmable

AC Source 0.1-300V 350VA 500VA 1KVA with

Frequency Adjustment

Programmable AC Variable Frequency Power Source for 400Hz Avionics Equipment Testing

This programmable AC variable frequency power source is designed to provide adjustable AC input conditions for laboratory evaluation of compatible avionics equipment and aviation-related electronic devices. Available in three capacity options — 350VA, 500VA, and 1KVA — it delivers an adjustable output voltage range of 0.1–300V and a variable output frequency range of 45–400Hz. The adjustable frequency function allows users to establish 400Hz AC power conditions for evaluating equipment designed to operate with this frequency.

For avionics equipment development and laboratory testing, engineers may need to verify how compatible AC-powered devices operate under selected voltage and frequency conditions. This AC source provides two selectable voltage ranges: 0.1–150.0V in the low-voltage range and 150.1–300.0V in the high-voltage range. Its 0.1Hz frequency adjustment step allows users to set the required output frequency, including 400Hz, according to the equipment's input specifications.

For programmable testing environments, the series comes standard with RS-232C and RS-485 communication interfaces and supports the Modbus RTU protocol. It can connect to compatible PLCs, host computers, and automated testing systems for programmable AC output control. Three groups of parameter presets, 50Hz / 60Hz quick selection, electrical parameter displays, voltage soft start, and multiple protection functions provide additional convenience for laboratory power supply applications.

Key Features

Adjustable 0.1–300V AC Output for Avionics Equipment Input Testing

This programmable AC source provides two selectable output voltage ranges: 0.1–150.0V in the low-voltage range and 150.1–300.0V in the high-voltage range.

Users can adjust the AC output voltage according to the rated input requirements of compatible avionics equipment. This allows engineers to establish different AC input voltage conditions during laboratory evaluation and observe the equipment's operating response.

45–400Hz Variable Frequency Output for 400Hz Applications

The power source supports an adjustable output frequency range of 45–400Hz, with a frequency adjustment step of 0.1Hz.

The 400Hz output capability makes it suitable for establishing 400Hz AC supply conditions when evaluating compatible aviation-related electronic equipment. Users can also select other frequencies within the specified range to perform comparative power input evaluations.

Three Groups of Parameter Preset Storage

The power supply supports three groups of preset parameters, including output voltage, output frequency, and output current limit.

Users can save commonly used settings and recall them when performing repeated laboratory evaluations. This helps reduce repeated manual adjustments when switching between different voltage and frequency test conditions.

Quick 50Hz / 60Hz Frequency Selection

The built-in 50Hz and 60Hz quick selection functions allow users to switch conveniently between two commonly used AC power frequency settings and their corresponding voltage-frequency combinations.

This is useful when evaluating equipment designed for different AC power environments or comparing its operation under common power frequency conditions.

RS-232C / RS-485 Programmable Communication

The entire series comes standard with RS-232C and RS-485 communication interfaces and supports the Modbus RTU protocol.

The AC source can connect to compatible PLCs, host computers, and automated testing systems for programmable output control. This supports integration into laboratory test setups that require repeatable voltage and frequency settings.

Electrical Parameter Display for Test Observation

The front-panel display provides readings for output voltage, current, power, frequency, and power factor.

These readings help users observe the power supply and connected load conditions during laboratory evaluation. The voltage display resolution is 0.1V, the frequency display resolution is 0.1Hz, and the current display resolution varies according to the selected voltage range.

Multi-Level Overload Protection

The power source features a two-stage overload protection mechanism that disconnects the output according to the overload level.

• When the output current exceeds 1.0 times but does not exceed 1.1 times the rated current, the output is disconnected after a 15-second delay.

• When the output current reaches 1.1 times and up to 1.2 times the rated current, the output is disconnected after a 5-second delay.

This staged protection design provides different response times according to the detected overload level.

Comprehensive Protection with Fault Indication

The power supply includes overcurrent, overvoltage, overtemperature, and short-circuit protection.

When a protection condition is triggered, a visual alarm indication is provided, and the front panel displays the corresponding fault code to help users identify the protection status.

The overtemperature protection threshold is 85°C ± 5°C at the power device.

Voltage Soft-Start Function

The voltage soft-start function gradually increases the output voltage when the output is established, helping reduce sudden voltage changes and inrush impact on the connected equipment.

This is useful when a controlled voltage rise is preferred during laboratory power-up and evaluation procedures.

Model Selection Tips

350VA Model – For Lower-Power Avionics Equipment Evaluation

The 350VA model is suitable for laboratory evaluation of compatible lower-power avionics electronic devices and AC-powered modules.

It provides adjustable voltage and frequency settings, including 400Hz output, for applications where the connected equipment's input power requirement is within the model's rated capacity.

500VA Model – For Medium-Power Avionics Equipment Evaluation

The 500VA model offers a higher rated capacity for compatible medium-power aviation-related electronic equipment and laboratory test setups.

Its adjustable AC voltage and frequency, parameter presets, and programmable communication interfaces support repeated evaluation under selected power input conditions.

1KVA Model – For Higher-Power Laboratory Evaluation

The 1KVA model provides a rated capacity of 1000VA, offering the highest capacity option in this series.

It is suitable for compatible higher-power AC input equipment and laboratory setups that require greater output capacity. Users should select the model according to the equipment's rated input voltage, current, and apparent power requirements.

Application Scenarios

400Hz Avionics Equipment AC Input Testing

Some aviation-related electronic equipment is designed to operate with a 400Hz AC power input. This programmable AC source can establish adjustable AC voltage and frequency conditions, including 400Hz, for laboratory evaluation of compatible equipment.

Engineers can select the required output settings according to the equipment's rated input specifications and observe its operating condition during the evaluation.

Aircraft Electronic Equipment Laboratory Evaluation

For compatible aircraft-related electronic devices with AC input requirements, the power source can provide adjustable voltage and frequency conditions within its specified output range.

It can be used during product development and laboratory evaluation to examine equipment operation under selected AC input conditions. Actual suitability depends on the device's input specifications and power requirements.

400Hz Power Supply Unit Evaluation

The adjustable 45–400Hz output allows users to establish 400Hz AC input conditions for evaluating compatible power supply units and aviation-related AC-powered modules.

The adjustable voltage range also allows engineers to select suitable input voltage settings according to the device under test.

Avionics Control Unit Power Input Evaluation

For compatible avionics control units that require AC input, the power source can provide selected voltage and frequency conditions during laboratory power-up and functional evaluation.

The displayed voltage, current, power, and frequency readings help users observe electrical conditions while the equipment is operating.

Aviation Instrumentation Equipment Testing

Compatible aviation instrumentation equipment with AC input requirements can be supplied under selected voltage and frequency conditions within the power source's rated range.

This supports preliminary laboratory evaluation of power input behavior without replacing dedicated measurement instruments or formal equipment qualification procedures.

Aviation Electronic Module Development

During the development of aviation-related electronic modules, engineers may need to evaluate operation under different AC input conditions.

The adjustable 0.1–300V output, 45–400Hz frequency range, and three groups of parameter presets provide flexible power settings for compatible AC-powered modules.

Automated Avionics Laboratory Test Setups

With standard RS-232C and RS-485 communication interfaces and Modbus RTU protocol support, the power source can be integrated into compatible PLC-based, host-computer-based, and automated laboratory test systems.

It supports programmable AC output control as part of a larger test setup, helping establish repeatable voltage and frequency conditions for laboratory evaluation.

Quality Check and Terms of Service

Product Inspection

Each product should be checked against the selected model, rated capacity, input requirements, and included accessories before use. Please confirm that the power source's AC output range and rated capacity are suitable for the equipment under test.

Customer Support

If you need assistance with model selection, output specifications, communication interfaces, or operation, please contact our customer support team before purchasing or using the product.

Technical Specifications

Model Selection and Rated Output Capacity

General Performance Specifications

Functions and Protection

Mechanical and Environmental Specifications

Why Choose This Programmable AC Source for 400Hz Avionics Testing?

This programmable AC variable frequency power source combines adjustable 0.1–300V AC output, a 45–400Hz frequency range, and three capacity options — 350VA, 500VA, and 1KVA — for laboratory evaluation of compatible AC-powered avionics equipment.

Its 0.1Hz frequency adjustment step allows users to establish 400Hz output conditions, while three groups of parameter presets make repeated voltage and frequency settings more convenient. Standard RS-232C / RS-485 interfaces and Modbus RTU support integration with compatible programmable test setups.

With 50Hz / 60Hz quick selection, electrical parameter displays, multi-level overload protection, overcurrent and other fault protections, and voltage soft start, this series provides flexible AC power conditions for aviation-related electronic equipment development and laboratory evaluation.

Important: This is a programmable AC power source for compatible AC input equipment. It does not provide DC output, aircraft battery simulation, or automatic avionics compliance testing. No specific aviation standard certification or compliance is claimed. Always verify the equipment's required input voltage, frequency, current, and apparent power before use.