Siemens 7SR51 - Page 17

7.2.7 Information List......................................................................................................... 419
7.3 79 Automatic Reclosing...................................................................................................421
7.3.1 Overview of Functions............................................................................................... 421
7.3.2 Structure of the Function...........................................................................................421
7.3.3 Logic of the Function.................................................................................................424
7.3.4 Application and Setting Notes....................................................................................426
7.3.5 Settings Menu........................................................................................................... 433
7.3.6 IEC 61850 Functional Information Mapping .............................................................. 437
7.3.7 Information List......................................................................................................... 439
8 Instruments and Meters........................................................................................................................... 441
8.1 Introduction....................................................................................................................442
8.2 Instruments.................................................................................................................... 443
8.3 Notes..............................................................................................................................450
9 Functional Tests........................................................................................................................................451
9.1 General Notes................................................................................................................. 452
9.2 Hardware Measurement Tests......................................................................................... 454
9.3 Functional Test for the Phase-Rotation Direction..............................................................456
9.4 Direction Test of the Phase Quantities (Current and Voltage Connection) ........................ 457
9.5 Direction Test of the Earth Quantities for Directional Earth-Fault Functions...................... 458
9.6 Circuit‑Breaker Test......................................................................................................... 461
9.7 Primary and Secondary Tests of the Circuit‑Breaker Failure Protection.............................. 462
9.8 Restricted Earth Fault Protection......................................................................................463
9.9 Protection Functional Tests............................................................................................. 464
9.9.1 21LB Load Blinder......................................................................................................464
9.9.2 27 Undervoltage Protection – 3 Phase........................................................................465
9.9.3 27Vx Undervoltage Protection – Vx............................................................................466
9.9.4 32 Power Protection.................................................................................................. 467
9.9.5 37 Undercurrent Protection – Phase...........................................................................468
9.9.6 37G Undercurrent Earth Fault – Measured................................................................. 469
9.9.7 46 Negative Sequence Overcurrent Protection........................................................... 470
9.9.8 46BC Broken Conductor Detection............................................................................. 471
9.9.9 47 Sequence Overvoltage Protection......................................................................... 472
9.9.10 49 Thermal Overload Protection.................................................................................473
9.9.11 50/51 Phase Overcurrent........................................................................................... 474
9.9.12 50AFD Arc Flash Detection.........................................................................................476
9.9.13 50G/51G Measured Earth Fault.................................................................................. 476
9.9.14 50GS/51GS Sensitive Earth Fault................................................................................ 479
9.9.15 50N/51N Calculated Earth Fault................................................................................. 482
9.9.16 50SOTF Switch Onto Fault......................................................................................... 485
9.9.17 51CL Cold Load Overcurrent – Phase..........................................................................485
9.9.18 51V Voltage Dependent Overcurrent – Phase............................................................. 487
9.9.19 55 Power Factor........................................................................................................ 488
9.9.20 59 Overvoltage Protection – 3 Phase..........................................................................489
9.9.21 59N Neutral Voltage Displacement............................................................................ 489
9.9.22 59Vx Overvoltage Protection – Vx.............................................................................. 490
Table of Contents
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 17
C53000-G7040-C014-1, Edition 11.2019