UNI-T UAP500A AC Power Source
The UNI-T UAP500A AC Power Source is a programmable variable-frequency AC power supply designed for electronics testing, electrical product evaluation, research and development, and quality inspection. With a rated output capacity of 500VA, it generates adjustable AC voltage and frequency to help engineers evaluate equipment under controlled power conditions. It is suitable for laboratory benches, production testing environments, and automated electrical test systems.
Features:
- Programmable AC power source with a rated output capacity of 500VA.
- Adjustable output voltage from 0–150VAC in the low-voltage range and 0–300VAC in the high-voltage range.
- Adjustable output frequency from 45Hz to 250Hz in 0.01Hz increments.
- Maximum output current of 4.2A in the low-voltage range and 2.1A in the high-voltage range.
- Uses DDS waveform generation and SPWM technology.
- Produces a low-distortion sine-wave output.
- Four-window LCD for simultaneous display of multiple electrical parameters.
- Displays RMS voltage, RMS current, frequency, active power, and power factor.
Specifications:
| Parameter | Value |
|---|---|
| Brand | UNI-T |
| Model | UAP500A |
| Product Type | Programmable AC power source |
| Rated Output Capacity | 500VA |
| Operating Mode | SPWM (sinusoidal pulse-width modulation) |
| Waveform Generation | DDS (direct digital synthesizer) |
| Input Phase | Single-phase, two-wire |
| Input Voltage | 220V±10% |
| Input Frequency | 47–63Hz |
| Output Phase | Single-phase, two-wire |
| Low-Voltage Output Range | 0–150VAC |
| High-Voltage Output Range | 0–300VAC |
| Output Frequency Range | 45–250Hz |
| Frequency Setting Resolution | 0.01Hz |
| Voltage Setting Resolution | 0.01V |
| Maximum Output Current, Low Range | 4.2A |
| Maximum Output Current, High Range | 2.1A |
| Current Display Resolution | 0.001A |
| Voltage Measurement Accuracy | ±(0.5%FS+5 digits) |
| Current Measurement Accuracy | ±(0.5%FS+5 digits) |
| Frequency Measurement Accuracy | ±(0.01%FS+5 digits) |
| Power Measurement Accuracy | ±(0.5%FS+5 digits) |
| Output Voltage Accuracy | ±1%FS |
| Load Stability | 1% |
| Frequency Stability | 0.01% |
| Waveform Distortion (THD) | 3% under the specified pure-resistive-load conditions at 120V low range and 240V high range |
| Display Type | Four-window LCD |
| Displayed Parameters | RMS voltage, RMS current, frequency, active power, and power factor |
| Programmable Presets | 9 groups (M1–M9) |
| Output Delay | Adjustable |
| Current Limit | Adjustable |
| Output Protection | Overcurrent, overtemperature, overload, and short circuit |
| Output Connections | Front and rear AC output sockets |
| Communication Interface | RS-232C |
| Communication Protocols | SCPI and MODBUS |
| Remote Control | Supported through compatible PC software or custom control programs |
| Dimensions (W×H×D) | 430×132×483mm |
| Operating Temperature | 0–40°C |
| Operating Humidity | 20–80%RH |
Configuration:




Applications:
- Research and development of electronic products.
- AC power supply testing and electrical performance evaluation.
- Consumer electronics testing under different voltage and frequency conditions.
- Motor and electrical equipment testing.
- Lighting equipment development and quality inspection.
- Production-line testing and quality control.
- Evaluation of products sensitive to voltage changes during power-up.
- AC input tolerance testing.
- Automated electrical testing through remote control.
- Laboratory experiments and engineering education.
Package Include:
- 1x UNI-T UAP500A AC Power Source.
- 1x AC Power Cable.
- 1x RS-232C Communication Cable.
- 2x Spare Fuses.








