Programmable AC Electronic Load with Constant Current/Voltage/Power Mode
Regenerative AC electronic load is an advanced electronic device that simulates load characteristics while feeding energy back into the grid or local power systems, making it highly efficient and eco-friendly.
Unlike traditional loads that dissipate energy as heat, regenerative models convert and reuse up to 95% of the consumed power, significantly reducing operational costs and environmental impact.
Performance characteristics
1. The main circuit adopts the DSP chip, IGBT module produced by TI company of the United States, and the drive protection is the Yingfei Ling movement, which is safe and reliable.
2. SPWM pulse width modulation technology, pure sine wave output, automatic synchronous tracking with the power grid, power factor close to 1, low current harmonic content, no pollution to the public grid, no impact.
3. Inverter grid-connected current closed-loop control, controllable and adjustable.
4. Wide range of input AC voltage, adapt to different occasions.
5. Frequency disturbance detection technology to achieve anti-island control.
6. It has a full range of power protection schemes and perfect self-detection and protection functions. In the occurrence of system failure will stop grid-connected inverter.
7. Compact circuit structure, maximum efficiency >94%.
8. The protection level can reach IP20.
9. Optional RS485 communication, PC monitoring, remote data acquisition and monitoring.1c527b
Schematic Diagram
AC electronic load. The power supply is filtered by AC to the rectifier bridge, the AC voltage is converted to DC voltage, and the IGBT module is inverted and isolated by the three-phase transformer and then integrated into the power grid to generate electricity.
Figure 2 Schematic diagram of the power supply circuit
Technical parameters of power supply
| Power | 1-1000Kva | |
| AC Input | Phase | 3 P4 w + PE |
| Voltage range | 300V-500V | |
| Current range | 0-rated current | |
| Frequency | 43Hz – 67 Hz | |
| PFC | -1~1 (Leading and lagging) | |
| THDI | < 3% (Rated power) | |
| load PART | Mode | Constant current, constant resistance, constant power |
| constant power | ≤± 0.6%FS | |
| constant current | ≤± 0.6%FS | |
| Constant resistance | ≤± 0.6%FS | |
| Time | Setting 0.1 sec+ 0.1% | |
| Voltage Resolution | 0.1 V | |
| Current Resolution | 0.01 A | |
| Protection | Phase loss, overvoltage, overcurrent, overtemperature, overload, short circuit, reverse connection | |
| Cooling | Forced fan | |
| Response time | <10ms | |
| working power supply | 380VAC ±15% 50HZ | |
| Display | Touch screen | |
| Interface | RS485/LAN | |
| Insulation | Input to casing 20MΩ 500VDC, output to casing 20MΩ 500VDC | |
| Pressure resistance | Input to casing 1500VAC for 1 minute, input to output 1500VAC for 1 minute | |
| Feed back grid | ||
| Output Voltage | 380V AC | |
| T.H.D | <3% | |
| Frequency | 50Hz/60Hz | |
| Over Voltage Protection | >418V AC | |
| Under Voltage Protection | <342V AC | |
| Feedback power | 100% Full scale power feedback | |
| OTHER | ||
| Environment | 0 – 45℃ 10-90%RH | |
| Cooling mode | Forced fan | |
| Noise | <60dB | |
| Protection level | IP20 | |
No.220 Huayuan Road Jinan city China