Yuneng

  A transformer vacuum pump plays a vital role in maintaining insulation quality and ensuring the transformer’s long-term reliability. Just like the transformer itself, the vacuum pump requires regular attention to deliver consistent performance. Neglecting maintenance can lead to reduced pumping efficiency, longer processing times, contamination risks, or even unplanned downtime. The best way to avoid these issues is through a structured preventative maintenance program. Here’s a comprehensive checklist to keep your transformer vacuum pump in top shape: 1. Daily Checks Monitor oil levels (for oil-sealed pumps): Ensure oil is at the recommended level and appears clear. Discolored or milky oil indicates contamination and should be replaced. Check vacuum readings: Verify that the pump is achieving the required vacuum level. A sudden drop in performance may signal leaks or worn components. Inspect for unusual noise or vibration: These can indicate mechanical wear, misalignment, or cav...

  High-voltage transformers require ultra-clean insulating oil to prevent dielectric failures. Standard purification methods may not suffice for critical applications, necessitating advanced techniques. This blog explores cutting-edge transformer oil purification technologies used in high-voltage and extra-high-voltage (EHV) systems. Challenges in High-Voltage Transformer Oil Maintenance High-voltage equipment demands oil with: Extremely low moisture content (<5 ppm) Minimal particulate contamination (NAS Class 5 or better) Near-zero dissolved gases Conventional purification may struggle to meet these stringent requirements, leading to innovations in oil treatment. Advanced Purification Technologies 1. Multi-Stage Vacuum Dehydration & Degasification Double or triple-stage vacuum systems achieve deeper dehydration (<3 ppm). High-temperature vacuum chambers enhance water removal without thermal degradation. 2. Electrostatic Oil Purification (Coulombic Separation) Uses high-...