Siemens SIPROTEC 5 7SD87 Line Differential Protection Relay

Main Function: Differential Protection ، Interoperability: SIPROTEC 5 and SIPROTEC 4 devices ، Tripping: 1-pole and 3-pole, min. time 9 ms ، Inputs / Outputs: ، 12 predefined standard variants ، 4/4 or 8/8 current / voltage transformers ، 5–31 binary inputs ، 8–46 binary outputs ، Hardware Flexibility: Adjustable I/O structure within SIPROTEC 5 modular system ، Housing Width: 1/3 × 19" to 2/1 × 19" ، As Standard: Conformal coating ، Applications: ، Line protection for all voltage levels ، 1- and 3-pole tripping ، Protection for overhead lines, cables, and breaker-and-a-half switchgear ، Transformers and compensating coils in protection zone ، Ground fault detection ، Communication via fiber optic, two-wire, or network media ، PMU functionality ، Smooth interoperability between SIPROTEC 4 and 5