Pad Mounted Transformers, Compartmentalized dry type transformers, are designed for underground power distribution systems where the general public may be present. They are less hazardous and less maintenance than liquid filled transformers. Olsun Electrics has UL & CUL listed Tamper Resistant Pad Mount Dry Type Transformers to 15,000 Volts with 80°C, 115°C or 150°C Temperature Rise.