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SIPROTEC 4 7SA522 Distance Protection. Entry. Associated product(s). Edition: 05.2016, V4.74 and higher. Equipment Manual. This manual describes the Siemens SIP · 2004. 6. 6 Distance Protection / 7SA513 Distance Protection Relay for Transmission Lines nary input “Manual Close” will, depending. The SIPROTEC 7SA522 relay provides full-scheme distance protection and incorporates all functions usually required for the protection of a power line. Multi-end differential and distance protection in one relay siemens.com/protection or in the current catalog: Selection Guide for SIPROTEC andSIPROTEC 4 7SA522 distance protection relay for transmission lines. 6/45. Siemens SIP · Edition input “manual close” or automatically via measurement. Line Differential Protection /. Distance Protection Devices. 7SD5, 7SD610. 7SA6, 7SA522. V4.6. Breaker Management Relay. 7VK61. V4.6. IEC 61850. PIXIT. Siemens SIP · Edition No. 6. 3. Product Index. Type. Description. Page. 7UT6. Differential protection relay for transformers, generators, motors and busbars. 1 Introduction Application Scope ® The digital distance protection SIPROTEC 4 7SA522 is a selective and quick protec- tion for overhead lines and cables with