Medium voltage productsUniSecInstallation manualSafety 3For your safety! 3Skilled personnel 3Crucial information 3Contact us! 31. Introduction 41.1 General aspects 41.2 Installation manual 42. Product information 52.1 Unit dimensions 52.2 Weights 63. Transport and storage 73.1 Condition on delivery 73.2 Unpacking at installation site 73.3 Handling the units as far as the installation site 83.4 Temporary storage 103.5 Delivery responsibilities 104. Assembly of the switchgear on site 114.1 General warnings and cautions 114.2 Preparations 114.3 Dimensional foundation drawings 114.4 Foundations 154.5 Installation procedure for units 154.6 Gas vent ducts 264.7 Coupling the units with switch-disconnectorto WBC-WBS units 294.8 Coupling the units with switch-disconnectorto WBC unit 24 kV 305. Cable connections 315.1 Installing the cables 315.2 Control cables 375.3 Earthing the switchgear 375.4 Final installation work 38A. Tightening torques for steel screws and nuts/bolts 39B. Tools required for installation 42