Technical Data
10.1 General Device Data 503
10.2 21LB Load Blinder 504
10.3 27 Undervoltage Protection – 3-Phase 506
10.4 27Vx Undervoltage Protection – Vx 507
10.5 32 Power Protection 508
10.6 37 Undercurrent Protection – Phase 509
10.7 37G Undercurrent Earth Fault – Measured 510
10.8 46 Negative-Sequence Overcurrent Protection 511
10.9 46BC Broken Conductor Detection 513
10.10 47 Sequence Overvoltage Protection 514
10.11 49 Thermal Overload Protection 516
10.12 50 Instantaneous Overcurrent – Phase 519
10.13 50AFD Arc Flash Detection 520
10.14 50BF Circuit-Breaker Failure Protection – 3 Pole 522
10.15 50G Instantaneous Earth Fault – Measured 525
10.16 50GS Instantaneous Sensitive Earth Fault – Measured 526
10.17 50N Instantaneous Earth Fault – Calculated 527
10.18 51 Time-Delayed Overcurrent – Phase 528
10.19 51G Time-Delayed Earth Fault – Measured 530
10.20 51GS Time-Delayed Sensitive Earth Fault – Measured 532
10.21 51N Time-Delayed Earth Fault – Calculated 534
10.22 55 Power Factor 536
10.23 59 Overvoltage Protection – 3 Phase 537
10.24 59N Neutral Voltage Displacement 538
10.25 59Vx Overvoltage Protection – Vx 540
10.26 60CTS‑I CT Supervision – Current Reference 541
10.27 60CTS‑V CT Supervision – Voltage Reference 542
10.28 60VTS VT Supervision 543
10.29 67 Directional Overcurrent – Phase 544
10.30 67G Directional Earth Fault – Measured 545
10.31 67GS Directional Sensitive Earth Fault – Measured 546
10.32 67N Directional Earth Fault – Calculated 547
10.33 78VS Voltage Vector Shift 548
10.34 81 Frequency Protection – "f>" or "f<" 549
10
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 501
C53000-G7040-C014-1, Edition 11.2019
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