Do You Know The Material Problem Of The Transformer？ Given the transformer’s critical role in regulating and controlling power systems, CHH Power emphasizes rigorous material selection for transformer installation to ensure optimal performance and long-term reliability. Among all considerations, winding materials stand out as a paramount factor—different materials dictate distinct performance characteristics, directly influencing the transformer’s electrical conductivity, thermal management, and operational stability.
1. Overview of Winding Materials in CHH Power’s Transformers
For its transformer windings, CHH Power selects materials tailored to the device’s unique structural requirements, prioritizing electrical efficiency, thermal conductivity, and corrosion resistance. Common materials include enameled wire, yarn-covered wire, silk-covered wire, and paper-covered wire—each chosen based on the transformer’s intended application (e.g., residential distribution or industrial power supply).
Beyond winding wires, CHH Power’s material selection for transformer installation encompasses three core categories, with choices determined by on-site operational needs and industry standards:
- Iron core materials
- Insulating materials
- Impregnating materials
2. Key Material 1: Iron Core Materials
As the central component enabling electromagnetic induction (the basis for the transformer’s voltage and current regulation), the iron core’s material quality is a top priority for CHH Power.
- Material Optimization: CHH Power adds silicon to iron sheets to reduce the electrical and thermal conductivity of the base steel, minimizing energy loss during transformer operation. This silicon-iron alloy significantly lowers hysteresis loss, a major contributor to inefficiency.
- Compliance with Industry Standards: CHH Power strictly adheres to electric power industry regulations for silicon steel sheet magnetic flux density. For example, it limits the magnetic flux density of black iron sheets to 7000 Gauss and low-silicon sheets to 10000 Gauss. On-site engineers at CHH Power select the appropriate grade based on the transformer’s power rating and load requirements.
3. Key Material 2: Insulating Materials
To address rising accident rates in transformer installation and operation, CHH Power places strong emphasis on insulating materials to safeguard system integrity and personnel safety.
- Component Configuration: While many transformers are pre-equipped with insulating parts (e.g., washers and insulating appliances), CHH Power enhances safety by upgrading material quality—using high-temperature-resistant and flame-retardant insulating materials to mitigate risks from human operational errors.
- Targeted Insulation Enhancement: CHH Power focuses on two critical areas during installation:
- Isolation between coil frame layers to prevent short circuits caused by layer-to-layer voltage differences.
- Isolation between primary and secondary windings to ensure electrical safety and stable voltage transformation.
4. Key Material 3: Impregnating Materials
Impregnation is the final step in processing CHH Power’s transformer winding materials, designed to boost mechanical strength, electrical performance, and insulation capabilities—ultimately preventing safety accidents in later use.
- Application Process: After selecting winding materials, CHH Power’s technicians apply impregnating paint to the material surface and form an insulating layer. This process seals microscopic gaps in the winding, improving moisture resistance and structural stability.
- Material Preference: CHH Power commonly uses cresol varnish for impregnation. This varnish forms a durable protective coating that enhances safety, resists wear, and extends the overall service life of the transformer equipment.
By meticulously selecting and optimizing these core materials, CHH Power ensures its transformers meet the highest standards of efficiency, safety, and durability in power system applications.