In cases with high step- and contact voltages for the regional network Vattenfall Eldistribution needs to provide isolation transformers for the local network. A new 145 kV overhead line between Hedenlunda and Oxelösund is under construction. Along the OH line route, certain points that require provisions to avoid excessive step- and contact voltages in the Local Network have been identified. Existing cable junctions need to be protected/insulated and provisions need to be taken prevent excessive step and contact voltages.  19 units of 50 kVA and 4 units 100 kVA Liquid immersed isolation transformers will be tendered. Price option for additional units will be added.