Myers Power Products Permanent & Mobile Unit Substations are available in 480 V — 38 kV voltage ratings and custom designed to meet your specifications. These close-coupled assemblies are comprised of enclosed primary medium voltage equipment, a three-phase power transformer (up to 5 MVA), and enclosed secondary medium voltage or low voltage equipment. We offer a large number of transformer options including liquid filled, dry type, high fire point oil or silicon, vacuum pressure impregnated coil, or cast coil. Myers Permanent & Mobile Unit Substations can be integrated into a Power Distribution Center or designed for nearly any application, including indoor, outdoor, wheeled mobile, and NEMA 201-1982 and IEEE 100-1977-compliant skid mounting.