42
4 . eq u I p m eN T I N s Ta L L aT I o N
5. Tie housing bases together - Referring to
Fig. 4.17, tie the bases of the outdoor housing
together using the splice plate supplied with
the equipment and the bolts which previously
secured the lifting plates removed after
emplacement of the equipment. The nuts are
welded to the rear surface of the base. The bolts
should be tightened with a torque of 45 ft-lbs.
Note: There are two splice plates required, front
and rear of the assembly.
Remarque: Deux plaques d'assemblage sont
nécessaire, à l'avant et à l'arrière de l'équipement.
6. Install the roofcap - The roof cap, Fig. 4.17, should
be installed over the sealed and fastened roof
flange assembly. The roof cap is secured in place
with two 1/4-20 NC x 1/2-inch thread forming
bolts, each at the front and the rear ends of the
roof cap. These bolts should be tightened with
a torque of 7-9 ft-lbs.
7. Connect transformer flange - If a transformer
is included in the equipment line-up, the flange
should be connected to the switchgear opening
using the gasket and fastening material supplied
with the switchgear equipment.
8. Join sections together - The switchgear
equipment within the outdoor enclosure should
be joined to its mating sections in the manner
described for indoor equipment in Section 4,
Step 3 referenced on page 32.
—
Fig. 4.18
Cross-section view of
assembled roof joint
—
Fig. 4.19
Door seals
—
Fig. 4.18
—
Fig. 4.19
9. Make electrical interconnections -
The installation of bus splice plates for themain
horizontal, neutral and ground buses should be
done in accordance with the instructions for
indoor equipment, Section 4, Step 4, referenced
on page 33.
10. Connect the transformer secondary -
The installation of the transformer connection
straps to the incoming bus should be done in
accordance with the instructions for indoor
equipment, Section 4, Step 5, referenced
on page 35.
11. Interconnect control wiring -
The interconnection of control wiring across
shipping splits should be done in accordance
with the instructions for indoor equipment,
Section 4, Step 6, referenced on page 35.
12. Seal small openings - After completion
of the shipping split assembly, any small
openings should be sealed with clear
silicone caulking cement.
Anchoring switchgear equipment
Correct anchoring of the switchgear equipment to
the foundation is very important. After completion
of re-assembly of the equipment at the shipping
splits, the equipment anchoring procedure should
be completed.
