Eaton ETR-4000-2A0FA1 Transformer Relay - Modbus RTU or DNP3 RTU over Fiber Optic ST

Feature 1: Eight digital inputs, two current sensing inputs and nine outputs provide a comprehensive protection and control interface. Business Impact: Expands protection logic, enables precise trip decisions, and reduces wiring complexity. Application: Transformer protection in substations and industrial plants where assets require robust monitoring and rapid isolation. Feature 2: Modbus RTU or DNP3 RTU over Fiber Optic ST ensures secure, long-distance communications with SCADA systems. Business Impact: Simplifies integration, improves asset visibility, and lowers maintenance trips. Application: Remote transformer monitoring and asset management in distributed power networks. Feature 3: Wide power supply range of 19–300 Vdc and 40–250 Vac, plus 50/60 Hz compatibility, supports diverse plant environments. Business Impact: Flexible retrofits and scalable installations without new power infrastructure. Application: Retrofit and upgrade projects in modernized electrical rooms. Feature 4: I/O options including IRIG-B, URTD interface, and Trip Coil Monitor enable precise synchronization and trip-coil diagnostics. Business Impact: Enhances protection accuracy, reduces mis-trips, and improves diagnostic capability. Application: High-reliability transformer protection circuits in critical facilities. Feature 5: Removable terminals and projection mounting simplify on-site wiring and installation workflows. Business Impact: Speeds commissioning, minimizes field errors, and eases maintenance. Application: New builds and retrofit campaigns where installation time matters. Feature 6: Sensing inputs include current protection and metering differential protection with zone selective interlocking (2), improving selective tripping and system resilience. Business Impact: Reduces fault impact area, shortens outages, and lowers operating costs. Application: Substation protection schemes and OEM transformer control panels.