TK4720 AC Adjustable Resistance Load
The TK4720 is a high-performance AC adjustable resistive load designed for precise on-site verification and calibration of AC charging stations for electric vehicles. It is available in single-phase 9 kW and three-phase 45 kW configurations, offering broad compatibility with AC chargers of different capacities.
The system allows continuous adjustment of current and resistance values, enabling flexible load simulation during metrology and maintenance operations. With advanced protection mechanisms, forced-air cooling, and a robust AC load design, the TK4720 provides a reliable and efficient solution for EV AC charger testing in laboratory and field environments.
Technical Specifications of TK4720 AC Adjustable Resistance Load
| Model | TK4720-9kW | TK4720-45kW |
|---|---|---|
| Rated Power (@AC 220V) | Single-phase 9 kW | Three-phase 45 kW |
| Working Range | Voltage 0–264 V Current 0–39.5 A |
Voltage 0–248 V Current 0–80 A |
| Connection Mode | Single phase | Three phase four wire |
| Minimum Current Step | 0.1 A | 0.1 A |
| Minimum Power Step | 0.11 kW | 0.22 kW |
| Range of Resistance Regulation | 6.33 Ω – 500 Ω | 3.5 Ω – 500 Ω |
| Heat Radiation | Air blast cooling | |
| Protection | Overvoltage protection, short-circuit protection, abnormal wind speed protection; Equipped with alarm indicator light and emergency stop switch |
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Key Features
- High-efficiency AC adjustable resistive load designed for EV AC charger testing.
- Available in single-phase 9 kW and three-phase 45 kW load options.
- Wide voltage and current working range suitable for various AC charger capacities.
- Highly precise current and power adjustment with 0.1 A and 0.11/0.22 kW steps.
- Wide resistance adjustment range enabling flexible load simulation.
- Air-blast cooling ensures stable performance under continuous load.
- Advanced protection: overvoltage, short-circuit, and abnormal airflow monitoring.
- Alarm indicator and emergency stop switch enhance operational safety.
- Ideal for metrology labs, EV charger manufacturers, and field service engineers.
- Durable construction designed for reliable on-site and laboratory use.