Recently, a manufacturer encountered difficulties in selecting test equipment for its new products, 6.3KV and 10.5KV high voltage generators. Manufacturers want to buy high-voltage dry AC load for setting test and transient test, but after consulting many load manufacturers, they are told that high-voltage load insulation requirements, technical difficulties, domestic production process is difficult to manufacture. Some manufacturers recommend that users purchase low-voltage loads, then transfer them through step-down transformers, and then test the high-voltage generating units after they step-down.
When the manufacturer consulted Shenzhen Weihua Electronics Co., Ltd., after the customer service staff understood the user's needs, the manufacturer reminded the manufacturer that there were defects in the "high-to-low" scheme of transformer transfer:

 1. Inaccurate. After the transformer is connected, the data measured by the load is different from that of the direct connection to the high-voltage generator, and the error is amplified, which affects the reliability of the test report.

2. Insecurity. After the transformer is connected, the whole test system undergoes voltage changes, which makes it more complex, increases the hidden trouble of fault and has risks.

3. Not affordable. Users need to test high-power generators. The corresponding transformers are large in volume and weights in tons. It is inconvenient to install and move, and only the weight of transformers.

The quantity and price are equal to the whole load bank, which increases the cost of users.

The manufacturer also learned that Weihua is a high-tech enterprise in Guangdong Province. It has nearly 20 years of research and development experience in load cabinet. It has passed ISO 9001 international quality system certification and double soft certification of Ministry of Information Industry. Its intelligent load is the recommended product of China's power industry. By absorbing and introducing advanced technology at home and abroad, Wilhelm Load has overcome the technical difficulties of high-voltage load, and can directly test the high-voltage generator for users with high-voltage load cabinet. Its high-voltage load has a large number of users, including the State Grid, Guangzhou Zhonghuai Huangpu Shipbuilding Co., Ltd., Huawei Technology Co., Starlight Power Equipment Co., Ltd., CNOOC Energy Development Co., Ltd. and other well-known institutions and manufacturers.

VILVA high-voltage load bank uses high-voltage components and new alloy resistors. There are special insulating layers inside and outside the cabinet to ensure safety. It can adapt to high-voltage such as 6.3KV, 10.5KV (also known as 6KV, 10KV or 11KV). At the same time, the load also has super power, up to thousands to tens of thousands of kilowatts. The load bank has the advantages of high power density and small space occupation, and is also equipped with pulleys for easy movement.

After in-depth understanding, the two sides reached a cooperative intention. VILVA has customized a high voltage AC load cabinet with a voltage of 10.5KV and a rated power of 3000KW for manufacturers. Load can be controlled remotely by connecting PC with RS232, RS485 or USB interface. Manual or intelligent automatic program is used to check the high voltage generator set and produce scientific test report. After the completion of the load bank, VILVA will also carry out site installation and debugging for users, and demonstrate the use method.