Siemens SICAM, Manual, Page: 9 / 174

Table of Contents
Preface..........................................................................................................................................................3
Open Source Software..................................................................................................................................7
1 Delivery.......................................................................................................................................................11
1.1
Delivery............................................................................................................................ 12
2 Introduction................................................................................................................................................13
2.1
Overview ......................................................................................................................... 14
2.2 Environmental Protection Hints......................................................................................... 20
3 Hardware Components and Drawings........................................................................................................21
3.1
Hardware Components..................................................................................................... 22
3.2 Terminal Diagram............................................................................................................. 23
3.3 Dimensional Drawings ......................................................................................................25
4 Device Functions........................................................................................................................................ 29
4.1
Description....................................................................................................................... 30
4.1.1 Measurements and Derived Values.............................................................................. 30
4.1.2 Fault Detection............................................................................................................30
4.1.3 Fault-Reset Mechanism................................................................................................32
4.1.4 Enhanced Fault Validation and Fault-Reset Function.....................................................33
4.1.5 Trip Time DMT and IDMT .............................................................................................36
4.1.6 Ground-Fault Parameter Active Group Setting.............................................................. 37
4.1.7 Fault Indication........................................................................................................... 37
4.1.8 DO Configuration........................................................................................................ 38
4.1.9 Operating Modes.........................................................................................................38
4.1.10 Correction Factors for LoPo VT and LoPo CT (IEC 61869-10, IEC 61869-11)................... 38
4.1.11 Power-Flow Direction Reversal .................................................................................... 39
4.1.12 P,Q Sign...................................................................................................................... 39
4.1.13 3-Phase Angle Calculations.......................................................................................... 40
4.1.14 Phase-Sequence Monitoring........................................................................................ 40
4.1.15 Determination of Fault Direction..................................................................................41
4.1.16 Direction Determination of Phase Elements..................................................................42
4.1.17 Directional Ground Fault (Compensated/Resonant-Grounded) ..................................... 43
4.1.18 Directional Ground Fault (in Isolated Electrical Power Systems).................................... 43
4.1.19 Ground-Fault Direction for Solidly Grounded System.................................................... 44
4.1.20 Ground-Fault Detection with Cos φ/Sin φ Measurement............................................... 45
4.1.21 Determination of a Ground Fault with the Pulse-Location Detection Mechanism........... 46
4.1.22 Determination of the Ground-Fault Phase.................................................................... 49
4.1.23 Determination of Repeated Phase Faults with Automatic Reclosing ..............................49
SICAM, Feeder Condition Monitor, Manual 9
E50417-H8940-C580-A4, Edition 03.2019