Technical Data
This chapter provides the technical data of the device SIPROTEC 7SD80 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 250
4.2 Protection Interfaces and Connections 259
4.3 87 Differential Protection Phase Comparison Protection 261
4.4 Ground Fault Differential Protection in Grounded Systems 264
4.5 Ground Fault Differential Protection in Resonant-grounded / Isolated Systems 265
4.6 Breaker Intertrip and Remote Tripping- Direct Local Trip 266
4.7 Time Overcurrent Protection 267
4.8 Inrush Current Restraint Breaker Intertrip and Remote Tripping 274
4.9 Circuit-Breaker Failure Protection (Optional) 275
4.10 Thermal Overload Protection 49 276
4.11 Voltage Protection (Optional) 278
4.12 Frequency Protection (Optional) 281
4.13 Automatic Reclosing (Optional) 282
4.14 Transmission of Binary Information and Commands 283
4.15 Monitoring Functions 284
4.16 Flexible Protection Functions 286
4.17 User-defined Functions (CFC) 289
4.18 Additional Functions 293
4.19 Dimensions 296
4
SIPROTEC 4, 7SD80, Manual 249
E50417-G1100-C474-A2, Edition 02.2018
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