IG-262-EN versión 02; 26/04/2018
3
General instructions
pfu
for large-sized applications
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 of enclosures with separate body
and tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.1.1. Handling the tank. . . . . . . . . . . . . . . . . . . . . . . . . . .10
6.1.2. Handling of bodies with four DEHA
anchors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.1.3. Handling of bodies with eight DEHA
anchors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.2.
Handling of enclosures with monoblock
body and tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6.2.1. Handling of enclosures with four DEHA
anchors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6.2.2. Handling of enclosures with eight DEHA
anchors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.3.
Handling the roof . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.3.1. Covers with four threaded inserts. . . . . . . . . . . .17
6.3.2. Covers with eight threaded inserts . . . . . . . . . .18
7. Transport ..................................................................19
7.1.
Road haulage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
8. Installation ...............................................................20
8.1.
Receiving the equipment . . . . . . . . . . . . . . . . . . .20
8.2. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
8.3. Planning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
8.4.
Preparing the ground . . . . . . . . . . . . . . . . . . . . . . .21
8.4.1. Excavation drawings . . . . . . . . . . . . . . . . . . . . . . . .21
8.4.2. Safety recommendations. . . . . . . . . . . . . . . . . . . .21
8.4.3. Levelling process . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.5.
Assembly process for enclosures with
separate body and tank.. . . . . . . . . . . . . . . . . . . . .24
8.6.
Earth connection . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8.6.1. Protective earthing circuit. . . . . . . . . . . . . . . . . . .25
8.6.2. Operational earthing circuit . . . . . . . . . . . . . . . . .25
8.7.
Cable connections . . . . . . . . . . . . . . . . . . . . . . . . . .25
9. Maintenance .............................................................26
10. Environmental information ....................................27
10.1. Recyclability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
