Technical Data - Siemens SIPROTEC 4 Manual

4

Technical Data

This chapter provides the technical data of the device SIPROTEC 7SJ80 and its individual functions, including
the limit values that may not be exceeded under any circumstances. The electrical and functional data for the
maximum functional scope are followed by the mechanical specifications with dimensioned drawings.
4.1 General Device Data
4.2 Definite-time Overcurrent Protection
4.3 Inverse-time Overcurrent Protection
4.4 Directional Overcurrent Protection
4.5 Inrush Restraint
4.6 Dynamic Cold Load Pickup
4.7 1-phase Overcurrent Protection
4.8 Voltage Protection
4.9 Negative Sequence Protection (definite-time characteristic)
4.10 Negative Sequence Protection (inverse-time characteristics)
4.11 Frequency Protection 81 O/U
4.12 Undervoltage-controlled reactive power protection (27/Q)
4.13 Thermal Overload Protection
4.14 Ground Fault Detection (Sensitive/Insensitive)
4.15 Intermittent Ground Fault Protection
4.16 Directional intermittent ground fault protection
4.17 Automatic Reclosing
4.18 Fault Locator
4.19 Breaker Failure Protection 50BF
4.20 Flexible Protection Functions
4.21 Synchrocheck 25
4.22 User-defined Functions (CFC)
4.23 Auxiliary Functions
4.24 Switching Device Control
4.25 Dimensions
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
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