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2. Transformer oil - Wikipedia

   en.wikipedia.org/wiki/Transformer_oil

   Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled wet transformers, [ 1 ] some types of high-voltage capacitors , fluorescent lamp ballasts , and some types of high-voltage switches and circuit breakers.

3. Transformer types - Wikipedia

   en.wikipedia.org/wiki/Transformer_types

   Transformer oil is flammable, so oil-filled transformers inside a building are installed in vaults to prevent spread of fire and smoke from a burning transformer. Some transformers were built to use fire-resistant PCBs , but because these compounds persist in the environment and have adverse effects on organisms, their use has been discontinued ...

4. Pad-mounted transformer - Wikipedia

   en.wikipedia.org/wiki/Pad-mounted_transformer

   Pad-mount transformers are (nearly always) oil-filled units and so must be mounted outdoors only. The core and coils are enclosed in a steel oil-filled tank, with terminals for the transformer accessible in an adjacent lockable wiring cabinet. The wiring cabinet has high and low-voltage wiring compartments.

5. Distribution transformer - Wikipedia

   en.wikipedia.org/wiki/Distribution_transformer

   Oil-cooled three-phase distribution transformer, similar to one in above photo, with housing off, showing construction. Distribution transformers consist of a magnetic core made from laminations of sheet silicon steel ( transformer steel ) stacked and either glued together with resin or banded together with steel straps, with the primary and ...

6. Transformer - Wikipedia

   en.wikipedia.org/wiki/Transformer

   Large transformers are filled with transformer oil that both cools and insulates the windings. [42] Transformer oil is often a highly refined mineral oil that cools the windings and insulation by circulating within the transformer tank. The mineral oil and paper insulation system has been extensively studied and used for more than 100 years. It ...

7. Per-unit system - Wikipedia

   en.wikipedia.org/wiki/Per-unit_system

   By choosing the base quantities in this manner, the transformer can be effectively removed from the circuit as described above. For example: Take a transformer that is rated at 10 kVA and 240/100 V. The secondary side has an impedance equal to 1∠0° Ω. The base impedance on the secondary side is equal to: