GE TRANSFORMER PROTECTION RELAY The T60 Transformer Protection System is part of the Universal Relay (UR) series of products. It is a microprocessor-based relay for protection of small, medium, and large three-phase power transformers. The relay can be configured for a maximum of six three-phase current inputs and six ground current inputs, and can satisfy applications with transformer windings connected between two breakers, such as in a ring bus or in breaker-and-a-half configurations. The T60 performs magnitude and phase shift compensation internally, eliminating requirements for external CT connections and auxiliary CTs.