GIS INSTALLATION REPORT

Table of contents

Table of contents ............................................................................................................................................. 2

General information and specifications for GIS................................................................................................ 3

 General specifications.......................................................................................................................... 3

 GIS main components information....................................................................................................... 4

 GIS sub components information....................................................................................................... 21

2. General requirements for GIS installation................................................................................................. 30

 Preparation of Site Condition............................................................................................................. 30

 Preparation for Installation ................................................................................................................. 31

 Ground marking and Transportation sequence. ................................................................................ 33

 Transportation process ...................................................................................................................... 35

3. Installation process. .................................................................................................................................. 36

 Initial assembly process..................................................................................................................... 36

 Docking process ................................................................................................................................ 39

 Vacuum and SF6 gas works .............................................................................................................. 43

4. Accessories installation.............................................................................................................................. 46

 Earthing shield ................................................................................................................................... 46

 Linkage bars ...................................................................................................................................... 47

 Platforms............................................................................................................................................ 47

 Supports............................................................................................................................................. 48

 Cables work ....................................................................................................................................... 49

5. Schematic diagram for OHTL Bay. ............................................................................................................ 50

 List of contents................................................................................................................................... 50

 External wire specification ................................................................................................................. 50

 SLD, layout, interlock, internal arrangement and sf6 system............................................................. 50

 DC and AC systems........................................................................................................................... 50

 Closing and tripping circuits for C.B................................................................................................... 50

 Closing and opining circuits for D.S and E.S ..................................................................................... 50

 Alarms, indicators, monitoring and control circuits............................................................................. 50

 C.Ts and V.Ts wiring.........................................................................................................................

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