In the industrial field, with the continuous rise of energy costs and increasingly stringent environmental protection requirements, energy saving and consumption reduction have become the key lifeline for the sustainable development of enterprises. As the core equipment in the power testing link, the energy-saving technology transformation of industrial load banks is not only related to the economic benefits of the enterprise itself, but also an important measure to help the entire industrial system move towards a green and low-carbon future.

Sunwin WN-HC Household Storage Inverter Test System




WN-HC Household Storage Inverter Test System is the best test system for grid-connected/off-grid inverters. It customizes and optimizes standard test items according to the characteristics of solar inverters, with good test efficiency and high test coverage.


The whole machine adopts modular design, which is simple to operate and maintain. It can test the parameters of various items of the inverter according to industry specifications to meet the detection needs of the inverter. It is an essential detection tool for inverter production workshops, laboratories, installation and commissioning, and scientific research and development. The hardware platform of the VILVA-HC household storage inverter test system can be flexibly matched, and different AC sources, DC sources, electronic loads, power analyzers, oscilloscopes, etc. can be selected. Grid-connected bidirectional power supplies can also be selected according to different cost requirements. The test system software application interface has editable test items and flexible adjustment of test parameters. It can realize the intranet sharing of test programs, and one person maintains the ATE platform corresponding to all production lines for product models. Automatically generate test reports. And the system reserves multiple communication ports for inverters.

Load Bank Maintenance and Calibration: Key Practices and Common Misconceptions to Extend Equipment Life

Load bank error analysis is an important task in electronic testing. It can help us understand the performance and accuracy of the load bank and find out the possible sources of errors so as to make corresponding calibration and corrections.

Data center

• Power requirements: Data centers usually have a large number of servers and other equipment. It is necessary to select a rack-mounted load bank with appropriate power according to the scale of the data center and the expected load peak. The power is generally large, ranging from tens of kilowatts to hundreds of kilowatts.

• Accuracy requirements: For power supply testing in data centers, the accuracy requirements are relatively high to accurately evaluate the performance of power supply equipment, such as the accuracy must reach ±0.5% or higher.

• Adjustment method: It is recommended to select a load bank with remote control and automatic adjustment functions to facilitate centralized control and automated testing by computer room managers in the monitoring room.

• Protection level: The data center environment is relatively good, and the general protection level of IP20 or above can meet the requirements.

WN-EV AC charging pile function test system is an efficient and comprehensive ATE test system designed for national standard, European standard and American standard charging pile production lines. It is an integrated platform for testing the entire three-gun AC charging pile. It is mainly used for testing on charging pile production lines. Its biggest advantage is that it can improve production efficiency for customers while ensuring product quality.

A load bank is a tool used to test transformers, which can simulate load conditions and measure the performance of the transformer. When using a load bank for transformer testing, you need to pay attention to the following aspects.

Choosing the right load bank for a specific power system application requires considering multiple aspects of the power system. Here are some key factors:
Load characteristics
Power requirements
Accuracy requirements
Control method
Other factors

When selecting an AC load bank, you need to consider several key factors to ensure that it meets the needs of the actual application.
1. Load power:
2. Load type:
3. Accuracy requirements:
4. Voltage and frequency range:
5. Adjustment method
6. Protection level:
7. Cooling method:

In today's highly intelligent power system, the stability of power supply equipment is directly related to industrial production, data security and even social livelihood. Qingdao Sunwin Technologies Co., Ltd. has been deeply involved in the industry for many years, with "accurate diagnosis and tailor-made" as the core, providing professional and customized load testing solutions for global customers.