Sunwin Programmable Load Bank

In the development process of the power industry, testing technology has always been the key support to ensure the safe and stable operation of power equipment. With the rapid advancement of science and technology, the complexity of the power system is increasing day by day, and higher requirements are placed on the accuracy, function and adaptability of test equipment. Qingdao Sunwin Programmable AC and DC Load Bank came into being. With its excellent performance, advanced technology and wide application scenarios, it has brought a new experience to power testing and has become an indispensable assistant in the power industry.

1. Technical Analysis of Sunwin Programmable AC and DC Load Bank

(I) Working Principle

Sunwin Programmable AC and DC Load Bank uses advanced electronic technology and precise control algorithms to achieve accurate simulation and load regulation of AC and DC power supplies. Its internal core components use high-performance power devices and intelligent control systems, which can accurately control key indicators such as current, voltage, and power according to the set parameters. For example, in DC mode, through precise control of electronic switches, various load modes such as constant current, constant voltage, constant resistance, and constant power of DC power can be simulated; in AC mode, advanced PWM (pulse width modulation) technology is used to accurately generate AC signals of various frequencies and phases to simulate AC loads under different working conditions.

(II) Technical advantages

1. High-precision measurement and control: With extremely high measurement accuracy, the current measurement accuracy can reach ±0.1%FS, and the voltage measurement accuracy can reach ±0.2%FS. It can accurately capture subtle changes in power parameters and provide reliable data support for the performance evaluation of power equipment. At the same time, its control accuracy is also excellent, which can achieve precise adjustment of the load and meet various complex testing requirements.

2. Wide range power regulation: The power regulation range is wide, ranging from a few watts to hundreds of kilowatts, which can meet the testing requirements of power equipment of different power levels. Whether it is the research and development test of small electronic equipment or the commissioning and maintenance of large power systems, it can be easily handled.

3. Multiple load mode simulation: Supports a variety of load modes, including constant current (CC), constant voltage (CV), constant resistance (CR), constant power (CP), etc., as well as various complex combination modes. By simulating different load characteristics, the performance of power equipment under various working conditions can be fully tested. For example, when testing UPS (uninterruptible power supply), you can simulate the sudden addition and removal of loads to test the dynamic response capability and stability of UPS.

4. Fast dynamic response: With fast dynamic response characteristics, it can complete the switching and adjustment of loads in an instant, and accurately simulate the emergencies that power equipment may encounter in actual operation. This is especially important for testing new energy power generation equipment (such as wind turbines, solar panels) and other equipment with high dynamic response requirements, which can effectively evaluate its adaptability and reliability under different working conditions.

(III) Safety protection mechanism

1. Overcurrent protection: When the load current exceeds the set threshold, the load bank will quickly cut off the circuit to prevent equipment damage or safety accidents caused by overcurrent.

2. Overvoltage protection: Real-time monitoring of input voltage. Once the voltage exceeds the safe range, protective measures are taken immediately to prevent excessive voltage from damaging the equipment.

3. Overheat protection: Built-in high-precision temperature sensor to monitor the temperature of key components in real time. When the temperature is too high, the cooling system is automatically started and the power is cut off when necessary to ensure that the equipment operates within a safe temperature range.

4. Short-circuit protection: With powerful short-circuit protection function, when a short-circuit fault occurs, it can respond in a very short time, cut off the power supply, and prevent the short-circuit current from causing harm to equipment and personnel.