In order to thoroughly implement the national "dual carbon" strategic deployment, continuously advance the company's green and low-carbon transformation, and consolidate the achievements of energy conservation and carbon reduction, Yanchang Rubber Company recently seized the National Day production shutdown maintenance window to efficiently complete the upgrade and renovation of six aging transformers at the PCR production center. With all new equipment successfully commissioned, the energy efficiency upgrade project for 11 dry-type transformers in the PCR area, implemented in batches over two years, has been successfully completed, achieving full coverage across the entire area.

Prior to the upgrade, the SCB10 series transformers in service at the PCR production center were traditional Grade 3 energy efficiency equipment with relatively high operating losses, offering considerable potential for energy savings. To systematically address the shortcoming of high energy consumption, the company adopted a technical renovation approach of overall planning, phased implementation, and steady execution. In 2025, the first batch of five units was upgraded. On the basis of accumulated mature construction experience and verified energy-saving performance through actual measurements, the remaining equipment was replaced during the 2026 National Day maintenance window, with all units upgraded to SCB14 series energy-saving transformers that comply with the new national Grade 2 energy efficiency standard.

Compared with the original equipment, the SCB14 high-efficiency transformers, through optimized core materials, coil structures, and manufacturing processes, achieve a 20%–30% reduction in no-load losses and a 10% reduction in load losses, with significantly enhanced energy-saving performance, operational stability, and safety and reliability. According to calculations, after the completion of the full-area renovation, the company can save over 200,000 kWh of electricity annually, simultaneously achieving economic benefits, safety benefits, and ecological benefits, thereby laying a solid hardware foundation for the company to reach its annual energy conservation and emission reduction targets.

Safe, efficient, and low-carbon. The entire upgrade and renovation process strictly adhered to safety regulations for high-voltage electrical operations, with detailed power outage plans, construction procedures, and on-site supervision mechanisms. Operations including the dismantling of old equipment, installation of new units, and testing and commissioning were coordinated by area and by process to minimize disruption to production order, ensuring the project was completed to high standards with zero safety incidents. The head of the Energy and Power Department stated that this full-area energy efficiency upgrade of transformers is a pragmatic initiative by the company to tap energy-saving potential and promote cost reduction and efficiency improvement, as well as an important practice in implementing the green development philosophy. Going forward, the company will take the completion of this technical renovation as a new starting point, continue to accelerate the replacement and upgrading of high-energy-consuming equipment, further optimize the energy structure, enhance refined energy management capabilities, and, through a series of green technical renovation initiatives, strive to build a safe, efficient, and low-carbon modern green factory.