The global power equipment market is highly competitive, and technological innovation is the core competitiveness. Led by innovation, Dalian Xin 'anyue Power Equipment Co., Ltd. successfully overcame the three technical challenges of voltage switching, size limitation and high-altitude adaptation of the main transformer supporting protection equipment - grounding resistance cabinet in the high-voltage mobile substation project of Saudi State Grid Company, demonstrating the strength of "Made in China".
Demand strikes: Triple tests under strict indicators
On January 20, 2025, Dalian Xin 'anyue received a design request from Xidian for the Saudi vehicle-mounted transformer grounding resistance cabinet. The user's vehicle-mounted transformer project has three core challenges.
First, high voltage switching requirements: The resistance cabinet needs to be able to freely switch between 13.8kV and 33kV; Second, the length, height and width of the vehicle have been customized, and the space inside the vehicle is limited; Third, in high-altitude conditions, it is necessary to take into account the length, width and height of the vehicle and the safety distance requirements at high altitudes to ensure stable transportation and operation.
Facing the challenge, Dalian Xin 'anyue Power Equipment Co., Ltd. formed a dedicated R&D team to tackle it. Led by the chairman himself, the team integrated multiple resources, with Xin 'anyue electrical engineers at the core, and invited electrical engineers from Xidian University and electrical professors from Dalian University of Technology to provide parameter standards; Jointly delve into technical processes, solve technical difficulties, have in-depth communication with users, and precisely position requirements in theory and practice.
To achieve free conversion between 13.8kV and 33kV for the resistor cabinet and high altitude safety and size limitations, start with the optimization of core components: raise the material standard of the resistor sheet, change the shape of the resistor sheet, optimize the design of the installation structure of other accessories inside the cabinet, innovatively adopt the "layered compact layout", and optimize the arrangement of components through 3D modeling. During this period, the team stayed for 72 consecutive hours to monitor the data. Ultimately, the cabinet size was controlled within the vehicle requirements while meeting the insulation distance standards.
The project took four months to complete design, production and delivery. On-site installation and commissioning were completed in July 2025 and the project was successfully put into operation in one go. All five sites were successfully connected to the grid. After the project is put into operation, it will provide a solid and reliable power guarantee for the Saudi power grid during the peak summer period and strongly support the high-quality development of the company's high-end overseas market.
