Why Silicon Steel Sheets Need Rust Protection?
In transformer material selection, STB always adheres to high standards, using H-grade enameled wire and brand-new silicon steel sheets to ensure reliable product quality. Here, we briefly explain why rust prevention is essential for transformers and the potential hazards of using second-hand, rusted silicon steel sheets.
- Rust on silicon steel sheets can lead to inter-sheet short circuits, increasing core loss and reducing transformer efficiency.
- Rust increases energy loss, particularly eddy current loss, as it amplifies both hysteresis and eddy current losses in the core. This results in higher heat generation, reduced insulation performance, and a shorter operational lifespan.
- Rust can also affect the magnetic permeability of silicon steel sheets, thereby impairing the transformer’s normal function.
As evident, rust on silicon steel sheets significantly compromises transformer performance and may even cause safety incidents. Therefore, when selecting a transformer supplier, it is crucial to choose a certified manufacturer. If possible, conduct on-site inspections to ensure the use of genuine, high-quality materials.
In addition to using new silicon steel sheets, regular maintenance and rust prevention are essential, especially under varying environmental conditions. Key practices include:
- Periodically inspecting the transformer’s exterior for cleanliness, ensuring it is free of foreign matter or contaminants.
- Monitoring environmental humidity, particularly in damp seasons or locations, and applying drying treatments if necessary.
- Applying rust-resistant oil or paint compatible with the impregnating varnish to core cut surfaces to enhance rust protection.
- Developing inspection and maintenance plans tailored to local climate conditions.
Shenzhen S.T.B. Electric Equipment Co., Ltd., a wholly-owned subsidiary of the Jishengchang Group, was established in 2004. With its own industrial park, the company is an advanced and well-established professional transformer manufacturer and one of the earliest enterprises in Shenzhen to enter the power transformer manufacturing industry. STB is the transformer brand under Shenzhen S.T.B. Electric Equipment Co., Ltd.
