What is the primary concern of placing dry type transformers in a vault?

The primary concern of placing dry type transformers in a vault relates to fire safety. Dry type transformers, while generally safer than oil-filled types, can still produce heat during operation. If these transformers were to overheat due to a fault or malfunction, they could pose a fire hazard. By placing them in a vault, which is designed to provide enhanced fire protection, the risk of fire spreading to the surrounding areas is minimized. Furthermore, a vault can be constructed with materials that resist flame, contributing to overall fire safety for both the transformer and the facility.

The design and construction of the vault can also help isolate the transformer from other combustible materials, thereby reducing potential risks even further. Ensuring that the installation complies with relevant codes and safety standards is paramount, as it ensures that electrical installations are conducted in a manner that prioritizes fire prevention and public safety.