As a critical component of power systems, proper installation of dry-type transformers is crucial for safe and efficient operation. This article details the installation steps and precautions for dry-type transformers, providing a reference for relevant engineering personnel.
First, a comprehensive inspection of the transformer is required before installation, including visual inspection for damage, complete accessories, and nameplate specifications that meet design requirements. Furthermore, ensure that the installation environment meets standards, including adequate ventilation, the absence of corrosive gases, and that the temperature and humidity are within acceptable ranges. Ensure the foundation is level and solid to support the transformer's weight.
Extreme care is required during the lifting process during installation. Use appropriate lifting equipment and ensure the slings or wire ropes are securely fastened to the transformer's designated lifting points to avoid damage to the windings or insulation. Place the transformer firmly on the foundation and adjust the levelness with shims, keeping the error within a minimal range.
Next, proceed with the electrical connections. Connect the high-voltage and low-voltage cables or busbars correctly according to the wiring diagram, ensuring terminals are securely fastened and in good contact to prevent loose connections that could cause heating or arcing. The grounding system must be reliable, with the transformer casing, neutral point, and core all connected to the ground grid to ensure personal and equipment safety.
Finally, after installation, commissioning and testing are required. Check parameters such as insulation resistance, DC resistance, and transformation ratio. Once correct, conduct no-load and load tests to verify normal operation.
Dry-type transformer installation requires strict adherence to regulations, attention to detail, and safety. Only by ensuring every step is correct can long-term stable operation be guaranteed and reliable support provided to the power system.