ABB PVS-175 Series, Руководство по оборудованию, Страница: 36 / 72

Filling the pit and finalizing the surroundings
1. If required for local frost conditions, add insulation around the column foundation.
2. To minimize the growth of grass, use geotextile below the foundation and below the
service platform around the MVS. Put the geotextile 20 cm (8 in) below and about 100
cm (40 in) around the foundation.
3. The MVS is a not walking station, it is designed to be operated from the outside. Provide
a permanent or portable platform for comfortable operation of the MVS switching devices
as the foundation can be higher than the surrounding ground. For platform design and
construction, follow the local rules and standards.
4. Do not plant trees near the MVS. If bushes are planted, make sure that the planting
compost base is at least one meter (40 in) away from the station housing and that the
fully-grown bushes do not prevent maintenance access to the MVS. Make sure that
anything planted near the inverter does not discharge dust or seeds that can affect the
cooling air flow.
36 Mechanical installation