7SR210 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 3 of 61
Contents
Document Release History................................................................................. 2
Software Revision History .................................................................................. 2
1. Function Diagram ........................................................................................... 5
2. Menu Structure .............................................................................................. 6
3. Relay Settings ................................................................................................ 7
3.1. System Config ....................................................................................... 7
3.2. CT/VT Config ......................................................................................... 8
3.3. Function Config ..................................................................................... 8
3.4. Current Protection ............................................................................... 10
3.4.1. Phase Overcurrent .................................................................... 10
3.4.1.1. 51-1 ................................................................................ 10
3.4.1.2. 51-2 ................................................................................ 10
3.4.1.3. 50-1 ................................................................................ 11
3.4.1.4. 50-2 ................................................................................ 11
3.4.2. Cold Load.................................................................................. 11
3.4.3. Derived E/F ............................................................................... 12
3.4.3.1. 51N-1 .............................................................................. 12
3.4.3.2. 51N-2 .............................................................................. 13
3.4.3.3. 50N-1 .............................................................................. 13
3.4.3.4. 50N-2 .............................................................................. 13
3.4.4. Measured E/F ........................................................................... 14
3.4.4.1. 51G-1 ............................................................................. 14
3.4.4.2. 51G-2 ............................................................................. 14
3.4.4.3. 50G-1 ............................................................................. 15
3.4.4.4. 50G-2 ............................................................................. 15
3.4.5. Sensitive E/F ............................................................................. 15
3.4.5.1. 51SEF-1 ......................................................................... 15
3.4.5.2. 51SEF-2 ......................................................................... 16
3.4.5.3. 50SEF-1 ......................................................................... 16
3.4.5.4. 50SEF-2 ......................................................................... 16
3.4.6. Restricted E/F ........................................................................... 17
3.4.7. NPS Overcurrent ....................................................................... 17
3.4.7.1. 46IT ................................................................................ 17
3.4.7.2. 46DT ............................................................................... 17
3.4.8. Under Current ........................................................................... 18
3.4.8.1. 37-1 ................................................................................ 18
3.4.8.2. 37-2 ................................................................................ 18
3.4.8.3. 37G-1 ............................................................................. 18
3.4.8.4. 37G-2 ............................................................................. 18
3.4.9. Thermal ..................................................................................... 19
3.4.10. ARC Flash Detector ............................................................. 19
3.5. Supervision .......................................................................................... 19
3.5.1. CB Fail ...................................................................................... 19
3.5.2. CT Supervision ......................................................................... 19
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