Foundation guidelines
WARNING!
The pit for the foundation and the foundation must be designed by an experienced
civil work engineer. Obey all local rules and regulations. ABB is not responsible
for the design of the foundation.
For information on the MVS dimensions and footprint, see drawing
3AES-PVS980-CS-30-DW02.
Always follow the local rules and laws when designing and constructing the foundation. Pay
attention to the proper planning and constructing of the foundation. For example, an improper
foundation can cause settling of the compact skid or difficulty opening the door.
Follow the below guidelines:
•
To prevent any risk of corrosion, install the compact skid higher than its surroundings
so that surface water will not collect around its perimeter.
•
Tilt the surface of the surrounding ground at least 50 mm per meter (two inches per
40 in). This ensures that surface water flows away from the compact skid.
•
Consider local conditions, such as soil type, frost protection, rain amounts, etc. An
improper foundation can cause setting of the compact skid or difficulty opening the door.
•
Consider the required cable bending radius and installation room.
•
The built-on site user platform around the compact skid must be at least one meter
(40 in) wide. If it is narrower, service work can be difficult.
•
The entire perimeter of the compact skid must rest on the foundation.
•
The compact skid must be above ground level. To support the station, use concrete or
steel columns of at least 450 mm of height anchored to the attachment points marked
in the drawing 3AES-PVS980-CS-4600-30-DW02.
Note
: The columns or concrete pad foundations are not part of the delivery.
•
Check the load carrying capacity of the ground and potential local special requirements
(for example, earthquake or typhoon anchoring) of the construction area. Use materials
suitable for the local conditions and requirements.
Placing the compact skid on the foundation
WARNING!
Before laying the compact skid onto the foundation, make sure the foundation is
aligned well, hardened and stable.
1.
Measure the level of the foundation and the tilting of the surface of the surrounding
ground around the foundation. Obey the
Foundation guidelines (page 38)
2.
Make sure the foundation below the compact skid is leveled. Inclination up to 0.1 degrees
is permitted.
3.
Move the compact skid onto the foundation. Obey the instructions in section
. Make sure that the foundation does not move. Also make sure that
the station is stable and in direct contact with the foundation.
4.
When the compact skid is placed on the foundation, measure the height and inclination
of the compact skid. Check the slope of the surface of the surrounding ground around
the compact skid.
38 Mechanical installation
4