37
R E LI AG E A R® LV SG
LO W VO LTAG E S W I TC H G E A R
5. Tie housing bases together - Referring to
Figure 59, 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.
Notice:
There are two splice plates required, front
and rear of the assembly.
6. Install the roofcap - The roof cap, Figure 59,
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 as described
earlier in this instruction book.
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, as described earlier in this
instruction book.
—
60
Cross-section view of
assembled roof joint
—
61
Door seals
—
60
—
61
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, as described earlier in this
instruction book.
11. Interconnect control wiring -
The interconnection of control wiring across
shipping splits should be done in accordance
with the instructions for indoor equipment, as
described earlier in this instruction book.
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.
Indoor equipment
1. Anchoring by anchor bolts - Indoor equipment
are normally secured to their final mounting
surface by anchor bolts threaded into the
embedded channel sills, Figure 62. The bolts were
loosely threaded into place before reassembling
the equipment shipping splits and connecting to
the close-coupled transformer, if appropriate.
The anchor bolts should now be tightened with a
torque of 35-40 ft-lbs.
DANGER
WARNING
CAUTION
NOTICE
