Household Appliance Testing AC Variable Frequency Source 45-400Hz 350VA 500VA 1KVA with Overload Protection

Programmable AC Variable Frequency Power Supply for Household Appliance Testing

Overview

This series of programmable AC variable frequency power supplies is designed for household appliance testing, providing adjustable AC output conditions for evaluating appliance operation under different voltage and frequency settings. With an output voltage range of 0.1–300V and a frequency range of 45–400Hz, it allows engineers to configure different AC power conditions during household appliance development, laboratory evaluation, and production testing.

Available in three capacity options — Model 1 (350VA), Model 2 (500VA), and Model 3 (1KVA) — this series accommodates different testing power requirements, from low-power household electronic devices to higher-capacity appliances within the rated output range. Featuring programmable parameter presets, 50Hz/60Hz quick selection, voltage soft start, and standard RS-232C / RS-485 communication interfaces with Modbus RTU protocol, it can connect to PLCs, host computers, and automated testing systems for convenient programmable operation.

Key Features

• Adjustable AC Output for Household Appliance Input Testing:

  • Provides adjustable AC output voltage from 0.1–300V, with a low range of 0.1–150.0V and a high range of 150.1–300.0V.

  • Allows users to configure different AC input voltage conditions for household appliance electrical testing.

  • Supports laboratory evaluation of appliances and electronic modules under selected voltage settings.

  • Voltage display resolution of 0.1V helps users monitor the configured output voltage during testing.

• Wide Frequency Adjustment for Appliance Compatibility Testing:

  • Adjustable output frequency from 45–400Hz with a 0.1Hz adjustment step.

  • Supports evaluation of household appliances under different AC input frequency conditions.

  • Built-in 50Hz and 60Hz quick-selection settings simplify common power frequency configurations.

  • Frequency display resolution of 0.1Hz provides convenient frequency monitoring during testing.

• Stable AC Output for Consistent Testing Conditions:

  • Voltage stability of ≤1% and frequency stability of ≤0.1% help maintain consistent AC output conditions.

  • Output waveform distortion of THD ≤2% under rated resistive load conditions.

  • Output crest factor of 1.41 ±0.10.

  • Voltage soft-start gradually increases output voltage to help reduce sudden electrical impact on connected appliances and test equipment.

• Programmable Control and Communication for Production Testing:

  • Standard RS-232C and RS-485 communication interfaces support connection to PLCs, host computers, and automated testing systems.

  • Modbus RTU communication protocol supports integration into programmable test setups.

  • Parameter preset function stores output voltage, output frequency, and output current upper-limit settings.

  • 50Hz and 60Hz quick selection helps simplify repeated test configurations during household appliance inspection.

• Overload Protection and Comprehensive Safety Functions:

  • Built-in overcurrent, overvoltage, overtemperature, and short-circuit protection.

  • Graded overload protection automatically cuts off output after a specified delay according to the overload level.

  • When output current exceeds 1.0 times and is up to 1.1 times the rated current, output is cut off after 15 seconds.

  • When output current is from 1.1 times to 1.2 times the rated current, output is cut off after 5 seconds.

  • Protection activation triggers an audible/visual alarm and displays the corresponding fault code.

  • Overtemperature protection threshold is 85°C ±5°C at the power device.

• Three Capacity Options for Different Appliance Testing Requirements:

  • Model 1 provides 350VA rated capacity for low-power household electronic devices and laboratory development.

  • Model 2 provides 500VA rated capacity for medium-capacity household appliance testing and product verification.

  • Model 3 provides 1000VA (1KVA) rated capacity for higher-capacity appliance testing within the rated output specifications.

  • Users can select a suitable model according to the rated power, input current, and startup requirements of the equipment under test.

Technical Specifications

Model Comparison

Common Performance Specifications

Protection and Communication Functions

Mechanical and Environmental Specifications

Model Selection Tips

• Model 1 – 350VA: Suitable for low-power household electronic devices, small appliance development, and laboratory evaluation of low-capacity electrical products.

• Model 2 – 500VA: A practical choice for medium-capacity household appliance testing, electrical input verification, and product development.

• Model 3 – 1KVA: Provides higher rated output capacity for testing higher-power household appliances and compatible AC-powered equipment, subject to the actual input current and startup requirements of the equipment under test.

Application Scenarios

1. Household Appliance Input Voltage Testing: Adjusts AC output voltage to evaluate how household appliances operate under different input voltage conditions within the power supply's rated range.

2. Household Appliance Frequency Compatibility Testing: Provides adjustable output frequency from 45–400Hz to evaluate appliance operation under different AC input frequency conditions, including commonly used 50Hz and 60Hz settings.

3. Small Household Appliance Functional Testing: Supplies configurable AC power for checking startup and basic operating behavior of compatible small household appliances under selected voltage and frequency conditions.

4. Household Appliance R&D and Design Verification: Supports engineers in evaluating appliance prototypes and checking their electrical operating behavior during product development.

5. Household Appliance Production Line Inspection: Parameter presets and quick frequency selection simplify repeated AC input configurations, while RS-232C / RS-485 communication supports integration into automated production testing systems.

6. Household Electronic Control Module Testing: Provides adjustable AC power for evaluating compatible electronic control modules and AC-powered components used in household appliances.

7. Export-Oriented Appliance Input Condition Evaluation: Allows users to configure different AC voltage and frequency conditions when evaluating household appliances designed for different power supply environments. This supports preliminary electrical evaluation and does not replace formal safety or compliance certification testing.

Choose the programmable AC variable frequency power supply that matches your household appliance testing requirements. With adjustable 0.1–300V output, 45–400Hz frequency control, three capacity options, programmable parameter presets, overload protection, and standard RS-232C / RS-485 communication, this series provides a flexible AC power solution for household appliance development, electrical input verification, and production inspection.