Siemens SIPROTEC 5 7SD86 Line Differential Protection Relay

Main function: Differential protection ، Interoperability: SIPROTEC 5 and SIPROTEC 4 line protection devices ، Tripping: 3-pole, minimum tripping time 9 ms ، Inputs/Outputs: 12 predefined standard variants with ، 4/4 or 8/8 current/voltage transformers ، 5–31 binary inputs ، 8–46 binary outputs ، Hardware flexibility: Adjustable I/O structure within the SIPROTEC 5 modular system ، Housing width: 1/3 × 19 inches to 2/1 × 19 inches ، Application: ، Line protection for all voltage levels with 3-pole tripping ، Phase-selective protection of overhead lines and cables (single/multi-ended) ، Transformers and compensating coils in the protection zone ، Ground fault detection in isolated or arc-suppression-coil-ground systems ، Communication over fiber, two-wire, or network media ، Full interoperability between SIPROTEC 4 and SIPROTEC 5 devices