from The Century Dictionary.
- In electricity or heat, insulated by means of an intervening layer of air.
Sorry, no etymologies found.
The orders are to make and install air-insulated substations for Chhattisgarh and West Bengal state utilities, it said.
The project scope includes medium-voltage equipment including the latest ZX2 gas-insulated switchgear and ZS1 Unigear air-insulated switchgear.
After an all-day plane trip, Shirey learned some cold weather survival tips and got to try on some of the extreme gear she'll be wearing in Antarctica, such as furry sweaters and air-insulated boots.