Cooper Power Systems manufactures a complete line of single-phase overhead-type distribution transformers. Single-phase transformers are available as Conventional, Completely Self-Protected, Lightning Protected, and Envirotran in a variety of ratings to meet or exceed the requirements of applicable ANSI and NEMA standards. Units designed per Rural Utilities Service (RUS) standards are also available.
Completely Self-Protected transformers have direct connected primary arresters, secondary circuit breakers, and internal primary voltage fuses. This eliminates the need for separately mounted protective devices and provides reduced installation costs.