What are the methods for transformer oil regeneration in South Africa?

The methods for transformer oil regeneration in South Africa typically include vacuum distillation, clay filtration, and adsorption techniques. Vacuum distillation removes moisture and volatile contaminants, while clay filtration helps eliminate particulate matter and polar compounds. Adsorption techniques utilize activated carbon or other materials to absorb impurities. These methods are crucial for maintaining the insulating properties and extending the lifespan of transformer oil in power transformers.