Electronic Product Functional Testing

Programmable AC Power Supply 0.1-300V 

45-400Hz with Parameter Preset

Programmable AC Variable Frequency Power Source for Electronic Product Functional Testing

This programmable AC power supply is designed for electronic product functional testing, laboratory evaluation, and production testing applications. Available in three capacity options — Model 1 (350VA), Model 2 (500VA), and Model 3 (1KVA) — it provides adjustable AC output voltage from 0.1V to 300V and output frequency from 45Hz to 400Hz. This wide voltage and frequency range allows engineers and technicians to establish different AC power conditions for evaluating the operating performance of compatible electronic products.

During electronic product functional testing, different devices may require specific input voltage and frequency conditions. This programmable AC variable frequency power supply supports separate low-voltage and high-voltage output ranges, with 0.1Hz frequency adjustment steps. Users can preset and store three groups of output voltage, frequency, and current limit parameters, while the built-in 50Hz and 60Hz quick selection functions make it convenient to switch between common power supply standards.

Equipped with RS-232C and RS-485 communication interfaces and supporting the Modbus RTU protocol, the power supply can connect to a PLC, host computer, or automated testing system for programmable power control. Its voltage soft-start function and multiple protection mechanisms provide additional support for electronic product testing and laboratory power applications.

Key Features

Wide 0.1-300V Adjustable AC Output

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

The adjustable voltage output allows users to establish different AC input conditions for compatible electronic products during functional testing. Whether evaluating low-voltage electronic devices or products designed for higher AC input voltages, the power supply offers flexible voltage settings within its rated capacity.

45-400Hz Variable Frequency Output

With an adjustable output frequency range of 45–400Hz and a frequency adjustment step of 0.1Hz, this AC variable frequency power supply supports electronic product testing under different frequency conditions.

Users can adjust the output frequency according to the requirements of the device under test. This is particularly useful when evaluating electronic products designed for different AC power frequencies or verifying their operation under non-standard frequency conditions.

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 store commonly used power settings and quickly recall them when switching between different electronic product testing requirements. This helps reduce repeated manual adjustments and improves convenience during laboratory evaluation and production testing.

Quick 50Hz / 60Hz Power Standard Selection

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

This function is useful for evaluating electronic products designed for different regional power standards, including products intended for 50Hz and 60Hz operating environments.

Programmable Control with RS-232C / RS-485 Interfaces

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

The power supply can connect to compatible PLCs, host computers, and automated testing systems for programmable output control. This makes it suitable for laboratory test setups and electronic product production lines that require communication-based AC power control.

Multi-Level Overload Protection

The power supply features a two-stage overload protection mechanism to help protect the equipment and connected load when the output current exceeds the rated operating range.

• 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 overload level.

Comprehensive Protection with Fault Indication

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

When a protection condition is triggered, an audible or 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 device.

This feature is useful when supplying compatible electronic products that require a controlled voltage rise during power-on testing.

Real-Time Electrical Parameter Display

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

These displayed parameters help users observe the electrical operating conditions of the connected electronic product during functional testing and laboratory evaluation.

The display resolutions include 0.1V for voltage, 0.1Hz for frequency, and different current resolutions for the low- and high-voltage ranges.

Technical Specifications

Model Selection and Rated Output Capacity

General Performance Specifications

Functions and Protection

Mechanical and Environmental Specifications

Model Selection Tips

Model 1 – 350VA for Low-Power Electronic Product Testing

Model 1 provides a rated capacity of 350VA, making it suitable for low-power electronic product development, precision instrument power testing, and functional evaluation of low-power electronic devices.

It is a practical choice for laboratory applications where adjustable AC voltage and frequency are required for testing relatively low-power products.

Model 2 – 500VA for Certification and Production Testing

Model 2 offers a rated capacity of 500VA and is suitable for small and medium-power electronic products, household appliance export certification testing, and electronic production line testing.

Its adjustable voltage and frequency output, preset parameters, and programmable communication interfaces support repeatable power conditions in laboratory and production testing environments.

Model 3 – 1KVA for Higher-Power Industrial Testing

Model 3 provides a rated capacity of 1000VA (1KVA), offering a higher output capacity for industrial electronic product testing, larger motor drive evaluation, and data center equipment power input testing.

It is suitable for applications that require greater AC output capacity while maintaining adjustable voltage, variable frequency, and programmable communication functions.

Application Scenarios

Electronic Product Functional Testing

This programmable AC power supply provides adjustable voltage and frequency conditions for evaluating the operating performance of compatible electronic products. Engineers can change the AC input conditions according to product requirements and observe the displayed electrical parameters during functional testing.

Its wide 0.1–300V voltage range and 45–400Hz frequency range make it suitable for laboratory evaluation of electronic products with different AC input specifications.

Household Appliance Functional Testing

Household appliances may be designed for different input voltage and frequency requirements. The adjustable AC output allows engineers to supply compatible appliances under selected power conditions during functional evaluation and development.

The 50Hz and 60Hz quick selection functions also provide a convenient way to establish common power frequency conditions for appliance testing.

Electronic Power Adapter Testing

The programmable voltage and frequency output can provide adjustable AC input conditions for compatible electronic power adapters during laboratory testing.

Users can select suitable input voltage and frequency settings according to the adapter's rated input specifications and observe the electrical parameters displayed by the power supply.

Motor and Drive System Testing

For compatible AC motors and drive-related electronic products, the power supply provides adjustable voltage and variable frequency output within its rated capacity.

The frequency adjustment capability allows users to establish different AC supply frequency conditions for laboratory evaluation of motor-related electrical equipment.

LED Driver and Lighting Product Testing

The adjustable AC voltage and frequency output can supply compatible LED drivers and lighting products during functional evaluation.

Users can select appropriate input conditions according to the rated specifications of the lighting product and observe the displayed voltage, current, power, and frequency readings.

International Power Standard Compatibility Testing

Electronic products intended for different markets may have different AC input frequency requirements. The built-in 50Hz and 60Hz quick selection functions, together with the adjustable output voltage and frequency, help users evaluate compatible products under different regional power conditions.

Automated Electronic Product Testing Systems

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

It supports programmable AC output control as part of a larger testing setup, helping establish repeatable voltage and frequency conditions for electronic product testing.

Why Choose This Programmable AC Power Supply?

This programmable AC variable frequency power supply combines adjustable 0.1–300V output, a 45–400Hz frequency range, three groups of parameter preset storage, and standard RS-232C / RS-485 communication interfaces in one desktop unit.

With three capacity options — Model 1 (350VA), Model 2 (500VA), and Model 3 (1KVA) — users can select a suitable output capacity according to the power requirements of different electronic products.

The 50Hz / 60Hz quick selection function, multi-level overload protection, comprehensive protection mechanisms, voltage soft start, and Modbus RTU communication support make this series suitable for electronic product functional testing, laboratory evaluation, and programmable AC power applications.

Whether used for low-power electronic device development, household appliance testing, power adapter evaluation, or higher-capacity industrial electronic product testing, this series provides flexible AC voltage and frequency settings to support a wide range of testing requirements.