Objective: Refurbishment, installation & commissioning of 1 x 13kV Earthing Transformer
Scope of Work
Fully refurbished Winder, UK manufactured, 13000 volt (17500V maximum), earthing transformer, designed to limit the fault current in the neutral to 830A for 3 seconds. 3 phase, 50Hz, Interstar. Refurbished and tested in general accordance with BSEN60076.
De-tank the core and windings, inspect all HV tapping connections, tighten up the clamping arrangement as necessary, stove dry for minimum 3 days at 105°C.
Replace all HV bushing and gaskets.
Re-gasket all remaining flange fixings throughout.
Shot blast the complete transformer tank, repaint the complete transformer assembly and cable boxes to our coastal paint finish standard, DAG final colour or a different colour if specified.
Supply and fit a new buchholz relay c/w with copper capillary pipes/taps for draining and bleeding at ground level.
Supply and fit new oil temperature indicator c/w 2 x N/O contacts.
Supply and fit new breather.
Supply and fit new valves throughout.
After stove drying of the core and windings, re-tank and connect.
Refill the complete transformer with the new oil Gemini X, under vacuum.
Carry out routine electrical tests in accordance with BS EN 60076 via video link.
Check test all protection devices fitted for correct operation.
Delivery, offloading via HIAB (8m reach) and site commissioning as per the customers spec.