IG-032-EN version 05; 18/06/2019
3
General instructions
pfu basic range: Prefabricated concrete
enclosure, ground-level walk-in type
Contents
Contents
1. Description and main characteristics .......................4
2. Standards applied ......................................................5
3. Main components ......................................................6
3.1. Indoor switchgear ...........................6
3.2. Prefabricated concrete enclosure .............6
4. Normal service conditions .........................................7
5. Ratings ........................................................................8
5.1. Mechanical characteristics ...................8
6. Handling .....................................................................9
6.1. Handling the body ...........................9
6.2. Handling the roof ...........................13
6.2.1. pfu-3 and pfu-4 roofs . . . . . . . . . . . . . . . . . . . . . . .13
6.2.2. pfu-5 roof ..................................15
6.2.3. pfu-7 roof ..................................16
7. Transport ..................................................................18
7.1. Road transport..............................18
8. Installation ...............................................................19
8.1. Receiving the equipment ...................19
8.2. Location ....................................19
8.3. Planning....................................20
8.4. Preparing the ground .......................21
8.4.1. Excavation drawings ........................21
8.4.2. Safety recommendations....................22
8.4.3. Levelling process ...........................23
8.4.4. Sealing cable accesses ......................25
8.5. Earth connection ...........................26
8.5.1. Protective earthing circuit. ..................26
8.5.2. Operational earthing circuit .................26
8.5.3. Exterior earthing circuit .....................27
8.6. Cable connections ..........................28
8.6.1. Low-voltage auxiliary supply input ..........28
9. Maintenance .............................................................30
10. Environmental information ....................................31
10.1. Recyclability ................................31
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