Overhaul of an N2 nitrogen storage; major overhaul to a GIS Type Siemens 8DN8.
Re-engineering of 3AS2 outdoor C.B. with corrosion treatment to flanges.
Control of an 8DQ1 multi-switch; inspection of 400V circuit breaker / interrupter unit.
Removal of SF6 leak in a Magrini Galileo due to flange corrosion.
Major overhaul of a GIS 8DP3 control contact system and overhaul of hydraulics and open oil container.
Extension of an existing 8DN9 GIS system (manufacturer: Siemens). Addition of busbar isolators and grounded neutral conductors.
Repairs to (Siemens type 3AS1) outdoor switching equipment, 123kV, hydraulic system re-activated.
Repair of Siemens Type 8D.2 GIS system. Replacement of double pressure blast-valve and parts to a 8TJ1 switchgear interlock unit.
Major overhaul of a Type 8DP3 GIS system (manufacturer: Siemens): Overhaul of two complete panels with circuit breakers, isolator switch, grounded neutral conductors, busbars and busducts.
Reparation of an isolator switch / grounded neutral conductor to a type 8DN8-3 HIS. Nominal voltage 72,5 kV. Damage was caused through incorrect usage.
Repairs to a leaking surge arrester on a Magrini Galileo GIS, 245 kV. O-Rings eroded due to flange corrosion resulting in the loss of SF6.
Overhaul of piston accumulators for various switchgears: Pre-charge pressure 200 bar, operating pressure 350 bar.
