Sungrow SG3425UD-MV, Системное руководство

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5.3 Foundation
5.3.1 Selection of Installation Site
When selecting the installation site, consider at least the following requirements:
• Ambient and geological conditions, such as stress wave emissions, the level of
underground water table, etc. should be taken into account.
• The ambient environment should be dry, well ventilated, and far away from inflammable
materials.
• The ground at the installation site must be compacted enough. Relative compaction of
the ground should be equal or greater than 98%.take proper methods to strengthen the
ground if otherwise.
5.3.2 Foundation Requirements
Pay attention to the heavy weight of the MV Station. Check thoroughly the
conditions of the installation site (mainly the geographical and environmental
conditions). Then design and construct the foundation.
Improper foundation construction may affect the place of the MV Station, open & close of
the door and later maintenance of the MV Station. Therefore, the foundation must be
designed and constructed according to related standard. The dimensions, weight of the MV
Station, the cable route and later maintenance should be considered at all times.
The following conditions must be fulfilled:
• The bottom of foundation should be firm enough.
• The foundations must be suitable for the weight of the MV Station.
• The foundation should be higher than the solid ground on site to avoid the rain damaging
the base or the inside of the MV Station.
• In foundation construction, take appropriate drainage measures according to local
geological conditions.
• Sufficient cross-sectional area and depth of the foundation should be maintained. The
depth is designed according to local soil conditions.
• Cable route should be taken into account.
According to the cable design of MV Station and for easy electrical connection,
establish cable trenches on bottom of the MV Station, i.e. reserve the cable
trenches inside the foundation and pre-bury the wire pipes.
The material dug out should be cleared immediately.
System Manual 5 Mechanical Installation