Siemens SIPROTEC 5 7UT85 Transformer Differential Protection Relay

Main function: ، 1 differential protection function (standard or auto transformer) with additional stabilization ، Up to 2 restricted ground-fault protection functions ، Measuring Points: ، 5 x 3-phase current measuring points ، 3 x 1-phase current measuring points ، 3 x 3-phase voltage measuring points ، Expandable to 3 sides ، Inputs and Outputs: ، 2 predefined standard variants with 8 current transformers ، 7 to 19 binary inputs ، 7 to 23 binary outputs ، Hardware Flexibility: ، Expandable I/O structure within the SIPROTEC 5 modular system ، Housing Width: ، 1/3 × 19 inches to 2/1 × 19 inches ، Interoperability: ، Compatible with SIPROTEC 5 and SIPROTEC 4 line protection devices ، Applications: ، Transformer protection with overload protection ، Backup protection for downstream power systems ، Ground-fault protection (REF) ، Circuit-breaker failure protection