ABB PVS-175 Series Hardware Manual

Also see for PVS-175 Series: Hardware manual

Contents

ABB PVS-175 Series Hardware Manual Manual pdf 34 page image

Follow the below guidelines:• To prevent any risk of corrosion, install the MVS higher than its surroundings so thatsurface water will not collect around its perimeter.• Tilt the surface of the surrounding ground at least 50 mm per meter (two inches per 40in). This ensures that surface water flows away from the MVS.• Consider local conditions, such as soil type, frost protection, rain amounts, etc. Thereneeds to be at least 300 + 200 mm gravel under the foundation.• Consider the required cable bending radius and installation room.• The built-on site user platform around the MVS must be at least one meter (40 in) wide.If it is narrower, service work can be difficult.• The entire perimeter of the MVS must rest on the foundation.• Check the load carrying capacity of the ground and potential local special requirements(for example, earthquake or typhoon anchoring) of the construction area. Use materialssuitable for the local conditions and requirements.Placing the MVS on the foundationWARNING!Before lifting the MVS onto the foundation, make sure the foundation is alignedwell, hardened and stable.1. Measure the level of the foundation and the tilting of the surface of the surroundingground around the foundation. Obey the Foundation guidelines (page 33).2. Make sure the foundation below the MVS is leveled. Inclination up to 0.1 degrees ispermitted.3. Lift the MVS onto the foundation. Obey the instructions in section Lifting (page 29).Make sure that the foundation does not move. Also make sure that the station is stableand in direct contact with the foundation.4. When the MVS is placed on the foundation, measure the height and inclination of theMVS. Check the slope of the surface of the surrounding ground around the MVS.34 Mechanical installation