4848
GENERAL INSTRUCTIONS FOR PF
MODULAR ENCLOSURES FOR
TRANSFORMER SUBSTATIONS
IG-021-GB
version 07
29.08.2008
Page 3 of 48
CONTENTS
1.
DESCRIPTION AND MAIN CHARACTERISTICS ........................................................ 4
2.
TRANSPORT................................................................................................................. 5
2.1.
ACCESS ...................................................................................................................... 5
2.2.
TRANSPORT............................................................................................................... 5
3.
INSTALLATION............................................................................................................. 8
3.1.
LOCATION .................................................................................................................. 8
3.2.
PLANNING .................................................................................................................. 8
3.3.
PREPARING THE GROUND....................................................................................... 9
3.3.1.
Excavation Dimensions........................................................................................ 9
3.3.2.
Types of Ground .................................................................................................. 9
3.4.
LEVELLING PROCESS ............................................................................................ 10
3.4.1.
Levelling Tools ................................................................................................... 10
3.5.
HANDLING PANELS AND CONCRETE COMPONENTS........................................ 13
3.5.1.
PF-200 / 300 & PF-2015 / 3015 SERIES CONCRETE COMPONENTS ........... 14
3.6.
ASSEMBLING TOOLS.............................................................................................. 15
3.7.
PF ENCLOSURE ASSEMBLY PROCESS ............................................................... 15
3.7.1.
Assembling Bottom Plates ................................................................................. 17
3.7.2.
Assembling the Vertical Panels.......................................................................... 20
3.7.3.
Remaining Vertical Panels ................................................................................. 26
3.7.4.
Floor Plates, Slabs and Transformer Platform ................................................... 30
3.7.5.
Cubicles and Transformer.................................................................................. 34
3.7.6.
Low Voltage Board............................................................................................. 34
3.7.7.
Transformer Protection Fences.......................................................................... 35
3.7.8.
Covers................................................................................................................ 35
3.7.9.
Ventilation grilles ................................................................................................ 37
3.7.10.
Doors.................................................................................................................. 38
3.7.11.
Low Voltage Auxiliary Feeder ............................................................................ 39
3.8.
CONNECTING THE EARTH CIRCUIT...................................................................... 40
3.8.1.
Panel Reinforcing Mesh ..................................................................................... 40
3.8.2.
Earthing Circuit................................................................................................... 42
3.8.3.
Earthing Ring ..................................................................................................... 43
4.
MAINTENANCE .......................................................................................................... 44
4.1.
REMOVING THE SIDE COVERS.............................................................................. 44
4.2.
REMOVING THE CENTRAL COVERS ..................................................................... 44
