10-17SJ62 Manual
C53000-G1140-C121-1
Technical Data 10
This chapter provides the technical data of the SIPROTEC
®
4 7SJ62 device and the
individual functions of the device, including the limiting values that under no circum-
stances may be exceeded. The electrical and functional data are followed by the me-
chanical data, with dimensional drawings of 7SJ62 devices equipped with all options.
10.1 General Device Data 10-2
10.2 Definite-Time Overcurrent Protection (50 and 50N Elements) 10-11
10.3 Inverse-Time Overcurrent Protection (51 and 51N Elements) 10-12
10.4 Directional Time Overcurrent Protection (67 and 67N Elements) 10-18
10.5 Dynamic Cold Load Pick-up Function (50c, 50Nc, 51Nc, 67c, 67Nc) 10-19
10.6 Inrush Restraint 10-19
10.7 Sensitive Ground Fault Detection (64, 50Ns, 67Ns) 10-20
10.8 Negative Sequence Protection (46) 10-22
10.9 Motor Starting Protection (48) 10-27
10.10 Thermal Overload Protection (49) 10-28
10.11 Start Inhibit for Motors (66/68) 10-30
10.12 Voltage Protection (27 and 59) 10-31
10.13 Frequency Protection (81 Over-Frequency and Under-Frequency) 10-32
10.14 Breaker Failure Protection (50BF) 10-33
10.15 Automatic Reclosing System (79M) 10-34
10.16 Fault Location 10-35
10.17 Breaker Control 10-35
10.18 Additional Functions 10-36
10.19 Dimensions 10-40
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