transformer vault

transformer vault

An unattended isolated enclosure having fire-resistant walls, ceiling, and floor, for transformers and their auxiliary equipment; often located below ground.
References in periodicals archive ?
In most offices, there is a serious EMF problem in the space above, below, or adjacent to the main electrical switch gear room and transformer vault," states Vitale.
Fields concentrated in a specific area will most likely reveal an obvious source, such as a transformer vault.
Workers constructed a total of three new switch rooms and battery plants, as well as a new mechanical (water and fire protection, with upgrades to the existing steam system) and electrical infrastructure (including new 12,500-kva, 480-volt service, new transformer vaults, network protectors, switchgear, and 480-volt distribution and bus duct risers throughout the building).

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