L&T Electrical & Automation GIS GV3N, Руководство по эксплуатации и техническому обслуживанию

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Operation & Maintenance Manual 13
INSTALLATION
5.2.1 - Order of Arrangement
1) The unit of the foundation frame is for one to four cubicles.
The frame can be combined for a larger housing. Any
jointing of the framework must be done only after the
leveling of both the frames is satisfactory as detailed in
Clause 5.2.2 and the frames are horizontally aligned as in
Clause 5.2.3.
2) The installation of foundation frame should begin at the
center of the cubicle array, moving progressively toward the
left and right side gure 5.2.2 a.
3) Fastening between the cubicle and the foundation frame is
done at four prepunched locations for each cubicle. The
foundation frame is supplied with M12 foundation bolts.
5.2.2 - Leveling Errors During Installation
The foundation frame should be installed so that the level
errors of installed bases fall within the range shown in
gure 5.2.2 a & b.
1) Front View of Foundation Frame.
L: Length of frame in the
cubicle width direction.
H: Height from the level reference point to the upper surface
of the frame to be installed rst
H+1mm
Figure 5.2.2 a - Level errors (front view)
REFERENCE
POINT
CHANNEL BASE TO
BE INSTALLED FIRST
H3
H1 H2
L
HI: Height difference between the frames arranged in the
cubicle width direction ....H1 = <0.5 mm
H2: Height difference between the left and right ends of one
frame.
H3: Height difference between the left and right ends of
another frame.
H2 < 1 mm when L < 3,000 mm
* H2 + H3 < 2 mm when the frames are arranged in the
cubicle width direction.
F: Exposed height from the oor surface to the upper surface of
the frame ..F < 2
2) Side View of Foundation Frame.
H4: Height difference between front and rear frames
.H4 < 2mm.
Figure 5.2.2 b - Level errors (side view)
H4