The S series of oil-immersed transformers mainly includes models S9, S11, S13, S18, S20, and S22. The main characteristics and applicable scenarios of these models are as follows:
1. S9 and S10: These are non-enclosed oil-immersed transformers, widely used in industrial and mining enterprises, agriculture, and civil construction.
2. S11: Utilizing high-quality, high-permeability cold-rolled silicon steel sheets, through precise longitudinal and transverse shearing and automatic lamination technology, it effectively reduces no-load loss and no-load current, featuring low loss, low noise, and no leakage.
3. S13: Also using high-quality, high-permeability cold-rolled silicon steel sheets, through precise lamination technology and vibration damping measures, it further reduces noise and ensures no leakage and strong short-circuit withstand capability.