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Automotive Electronics Testing Adjustable AC Power
Supply 0.1-300V 45-400Hz 350VA 500VA 1KVA
Programmable AC Variable Frequency Power Source for Automotive Electronics Testing
This programmable AC variable frequency power supply is designed to provide adjustable AC input conditions for compatible automotive electronic equipment and automotive-related power modules during laboratory testing and product evaluation. Available in three rated capacity options — 350VA, 500VA, and 1KVA — it offers an adjustable output voltage range of 0.1–300V and a variable output frequency range of 45–400Hz.
During automotive electronics development and testing, engineers may need to evaluate how AC-powered equipment responds to different input voltage and frequency conditions. The power supply provides a low voltage range of 0.1–150.0V and a high voltage range of 150.1–300.0V, with a frequency adjustment step of 0.1Hz. Three groups of preset parameters allow users to store output voltage, frequency, and current limit settings for repeated testing procedures.
For programmable test 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. The front-panel display shows output voltage, current, power, frequency, and power factor, while voltage soft start and multiple protection functions support controlled operation during automotive electronics laboratory evaluation.
Key Features
1. Adjustable 0.1–300V AC Output for Automotive Electronics Input Testing
The power supply provides two selectable AC output voltage ranges: 0.1–150.0V in the low-voltage range and 150.1–300.0V in the high-voltage range.
Engineers can establish different AC input voltage conditions for compatible automotive electronic equipment and AC-powered automotive-related modules. This helps evaluate equipment operation under selected supply voltage conditions during laboratory testing and product development.
2. 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 source supports testing under different AC frequency conditions.
Users can select the required frequency according to the input specifications of the equipment under test. This is useful for evaluating compatible automotive electronics and power conversion equipment that require specific AC input frequencies.
3. 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 AC input conditions and recall them during repeated automotive electronics tests. This helps reduce repeated manual adjustments and makes it easier to establish consistent test conditions for different products.
4. Quick 50Hz / 60Hz Frequency 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 is useful when evaluating compatible automotive electronic equipment designed for different AC power environments or when checking equipment under common regional power frequency conditions.
5. RS-232C / RS-485 Programmable Communication
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. This allows voltage and frequency settings to be incorporated into automotive electronics testing workflows that require repeatable power supply conditions.
6. Electrical Parameter Display for Test Observation
The front-panel display provides readings for output voltage, current, power, frequency, and power factor.
These displayed parameters help engineers observe the power supply and connected load conditions during automotive electronics testing. The voltage display resolution is 0.1V, and the frequency display resolution is 0.1Hz.
7. Multi-Level Overload Protection
The power supply uses a two-stage overload protection mechanism that disconnects the output when the output current exceeds the rated operating range.
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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.
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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.
The staged response provides different protection delays according to the overload level.
8. 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.
9. 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 connected equipment.
This is useful when a controlled voltage rise is preferred during automotive electronics laboratory testing.
Applications
1. Automotive Electronic Equipment AC Input Testing
Provide adjustable AC input conditions for compatible automotive electronic equipment during laboratory evaluation. Engineers can select the required voltage and frequency settings according to the equipment's rated AC input specifications and observe its operating condition.
2. Automotive Power Conversion Equipment Testing
Use the adjustable AC output to supply compatible AC-input power conversion equipment and evaluate its operation under selected input voltage and frequency conditions. The variable frequency function supports testing at different AC supply frequencies within the equipment's specified input range.
3. Onboard Charger and Charging Equipment Laboratory Evaluation
For compatible AC-input onboard charger units and automotive charging-related equipment, the power supply can establish selected AC input conditions during laboratory evaluation. Users can observe the displayed voltage, current, power, and frequency while the connected equipment operates.
4. Automotive Electronic Control Equipment Power Input Evaluation
Provide adjustable AC input power for compatible automotive electronic control equipment or associated power modules that require an AC input. The adjustable voltage and frequency settings help engineers establish different input conditions during product development and troubleshooting.
5. Automotive Electrical Accessory Testing
Supply compatible AC-powered automotive electrical accessories during bench testing. The three available capacity options allow users to select a suitable rated output capacity according to the power requirements of the equipment under test.
6. Automotive Electronics Product Development
During automotive electronics research and development, engineers can use adjustable AC voltage and frequency settings to evaluate compatible equipment under selected power supply conditions. Three groups of preset parameters help recall commonly used test settings.
7. Automated Automotive Electronics Test Setups
With standard RS-232C and RS-485 communication interfaces and Modbus RTU protocol support, the power supply can be integrated into compatible PLC-based, host-computer-based, and automated testing systems.
Programmable AC output control allows users to incorporate voltage and frequency settings into repeatable automotive electronics testing procedures.
Quality Check and Terms of Service
Product Inspection
Please check the selected model, rated capacity, input requirements, and included accessories before use. Ensure that the equipment under test is compatible with the AC output range and rated capacity of the selected power supply.
Customer Support
Please contact us if you have questions about model selection, output specifications, communication interfaces, or product operation. We will assist with your inquiry.
Technical Specifications
1. Model Selection and Rated Output Capacity
| Parameter | 350VA Model | 500VA Model | 1KVA Model |
|---|---|---|---|
| Rated Capacity | 350VA | 500VA | 1000VA (1KVA) |
| Input Supply | Single-phase AC 220V ±10%, 50Hz ±5Hz | Single-phase AC 220V ±10%, 50Hz ±5Hz | Single-phase AC 220V ±10%, 50Hz ±5Hz |
| Low Voltage Range | 0.1–150.0V | 0.1–150.0V | 0.1–150.0V |
| High Voltage Range | 150.1–300.0V | 150.1–300.0V | 150.1–300.0V |
| Output Frequency | 45–400Hz | 45–400Hz | 45–400Hz |
| Frequency Adjustment Step | 0.1Hz | 0.1Hz | 0.1Hz |
| Rated Output Current at 120V | 2.9A | 4.2A | 8.4A |
| Rated Output Current at 240V | 1.45A | 2.1A | 4.2A |
| Conversion Efficiency | ≥80% | ≥80% | ≥80% |
2. General Performance Specifications
| Parameter | Specification |
|---|---|
| Frequency Stability | ≤0.1% |
| Voltage Stability | ≤1% |
| Load Regulation | ≤1% |
| Source Voltage Effect | ≤1% |
| Output Voltage THD | ≤2% (at rated resistive load) |
| Output Crest Factor | 1.41 ±0.10 |
| Frequency Display Accuracy | 0.1% of reading |
| Frequency Display Resolution | 0.1Hz |
| Voltage Display Accuracy | ±(1% of reading + 0.1% of range) |
| Voltage Display Resolution | 0.1V |
| Current Display Accuracy | ±(1% of reading + 0.1% of range) |
| Current Display Resolution | 0.001A (low-voltage range) / 0.1A (high-voltage range) |
| Power Display Accuracy | ±(1% of reading + 0.1% of range) |
| Power Display Resolution | 0.1W / 0.1kW |
| Power Factor Display Accuracy | ±0.1 |
| Power Factor Display Resolution | 0.001 |
3. Functions and Protection
| Parameter | Specification |
|---|---|
| Parameter Preset | 3 groups of output voltage, frequency, and current limit settings |
| Quick Frequency Selection | 50Hz / 60Hz |
| Overload Protection | 1.0–1.1 times rated current: 15s delay; 1.1–1.2 times rated current: 5s delay |
| Protection Functions | Overcurrent, overvoltage, overtemperature, and short-circuit protection |
| Fault Indication | Visual alarm indication and corresponding fault code on the front panel |
| Overtemperature Protection Threshold | 85°C ±5°C at the power device |
| Communication Interfaces | RS-232C / RS-485 |
| Communication Protocol | Modbus RTU |
| Voltage Soft Start | Supported |
4. Mechanical and Environmental Specifications
| Parameter | Specification |
|---|---|
| Protection Rating | IP20 |
| Enclosure Type | Desktop |
| Operating Temperature | -10°C to 40°C |
| Operating Humidity | 10% to 90% RH (non-condensing at 25°C) |
| Maximum Operating Altitude | ≤2000m |
Why Choose This Programmable AC Power Supply for Automotive Electronics Testing?
This programmable AC variable frequency power supply combines adjustable 0.1–300V AC 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 rated capacity options — 350VA, 500VA, and 1KVA — users can select an appropriate model according to the power requirements of compatible automotive electronic equipment and laboratory test setups.
The 50Hz / 60Hz quick selection function, multi-level overload protection, overcurrent and overvoltage protection, overtemperature and short-circuit protection, voltage soft start, and Modbus RTU communication support make this series suitable for automotive electronics laboratory evaluation and programmable AC input testing.
By providing adjustable AC voltage and frequency conditions, this power supply helps engineers evaluate compatible equipment under selected input conditions during product development and testing. It is an AC power source for laboratory testing, not a direct DC power supply for vehicle batteries or 12V/24V DC automotive circuits.
Warranty
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Email: kuaiquinstrument@163.com
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Shenzhen Kuaiqu Electronic Co., Ltd. was founded in 2014 and is located in Shenzhen City, Guangdong Province. It is a scientific and technological enterprise integrating,production and sales. Specializing in the production of DC stabilized power supply, variable frequency power supply, switching power supply, program-controlled power supply and other 100 kinds of measuring teaching instruments and industrial special equipment.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
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