ABB 9T85B3874 - TENV (Totally Enclosed Nonventilated) transformers, available in 15-75kVA three-phase versions with NEMA TP-1 efficiency, are designed for applications where dry-type transformers are needed but standard enclosures won't suffice due to challenging environmental conditions like dust, dirt, or sprays. They are UL Listed for indoor and protected outdoor use. These transformers feature an enclosed NEMA 3R compartment with a convenient wiring section, factory-wired copper bus bars, and undergo extensive factory testing. They offer quiet performance, seismic qualification, a choice of copper or aluminum windings, and various temperature rise options. TENV transformers are ideal for industries such as textile, automotive, foundry, paper mills, and wash-down areas.