Eaton ETR-5000-2A3EB1 Transformer Relay - Profibus-DP

The ETR-5000-2A3EB1 offers eight digital inputs and nine digital outputs, enabling comprehensive protection schemes while reducing panel wiring and cabinet footprint. This feature translates to lower installation time and cost, greater wiring reliability, and faster fault reporting to PLCs in transformer protection applications. In practice, engineers can deploy differential, current, voltage, and power protection with metering in a single device, improving overall system observability and compliance with power-quality standards. The device supports both 19-300 Vdc and 40-250 Vac power supplies, delivering flexibility for mixed plant environments and simplifying spare-parts planning during maintenance windows. The Profibus-DP over D-Sub/RS-485 interface ensures robust remote communication with control systems, eliminating single-point connectivity risks in substations and OEM equipment integrations. Conformal coating on circuit boards increases reliability in humid or dusty environments, extending service intervals and reducing unexpected downtime. With I/O options like IRIG-B, Sensitive Ground Input, Trip Coil Monitor, and URTD Interface, the ETR-5000-2A3EB1 is ready for time synchronization, advanced protection timing, and monitor circuits required in modern protection schemes. The projection mounting and removable terminals simplify installation, wiring changes, and field servicing, supporting rapid upgrades without extensive panel modification. Zone selective interlocking (2 zones) accelerates fault isolation, improving ride-through performance and reducing downstream fault propagation in transformer protection scenarios.