What is the purpose of secondary containment for oil filled transformers?

The purpose of secondary containment for oil filled transformers is to prevent environmental contamination in the event of an oil leak or spill. This containment system is designed to capture and hold any transformer oil that may escape, ensuring that it does not enter soil or water sources. Additionally, secondary containment helps comply with environmental regulations and enhances safety by minimizing the risk of fire hazards associated with spilled oil.