This series of products is relatively cutting-edge in design, with significant improvements and enhancements made in materials, structures, and processes. The high and low voltage clamps are tightened with steel straps or upper and side beams to form a sturdy frame structure, enhancing the clamping force of the iron core and the ability to withstand transportation impacts. Strong short-circuit resistance, beautiful appearance selection, reliable operation, low loss, low noise, reaching the forefront level of similar foreign products.