Yuneng

  Transformer drying is a critical process in manufacturing and maintenance, ensuring the removal of moisture and gases from the insulation materials. A high-quality vacuum is essential for effective drying, and double-stage vacuum pumping systems —often incorporating oil diffusion pumps—play a vital role in achieving deep vacuum levels. W hy Vacuum Pumping is Essential for Transformer Drying Moisture and air trapped in transformer insulation can lead to reduced dielectric strength, increased aging, and potential failures. A strong vacuum system removes these contaminants, improving performance and longevity. Traditional rotary vane pumps alone may not achieve the necessary vacuum levels (typically below 0.1 mbar), which is where oil diffusion pumps come into play. The Double-Stage Vacuum Pumping System A double-stage vacuum system combines a roughing pump (such as a rotary vane pump) with a high-vacuum pump (like an oil diffusion pump or turbomolecular pump). The process works in ...

  Transformers are critical components in power distribution networks, and their reliability depends on proper maintenance. One of the biggest threats during transformer maintenance is moisture ingress, which can degrade insulation, reduce dielectric strength, and lead to costly failures. To combat this, mobile transformer dry air machines provide an effective solution by maintaining a dry internal environment. The Risk of Moisture Ingress During Maintenance When a transformer is opened for inspection, repair, or oil processing, humid air can enter the tank. Moisture reacts with insulating materials and transformer oil, forming sludge and increasing acidity. Over time, this can cause: Reduced dielectric strength, leading to partial discharges or short circuits. Accelerated aging of paper and pressboard insulation. Corrosion of internal components. To prevent these issues, maintaining a dry atmosphere inside the transformer is essential. How Mobile Dry Air Machines Work Mobile trans...