Cast resin transformers have similar application characteristics to dry type equipment, employing Class F insulation systems, and can be provided at system voltages up to 36 kV. These types are most popular with building design consultants where they are used for building distribution systems and can be located close to the load centre; therefore reducing cabling costs
Minimum periodic maintenance is required.

Illustrated - right
Cast resin transformer 1 MVA, 11000 // 400 Volts, 3 phase, 50 Hz in an IP21 cubicle with fusegear.