Electric installations for controlling electricity, electricity supply systems, electricity grids, solar modules, photovoltaic installations, transformers [electricity] and parts for transformers, distribution transformers, current transformers, rectifiers, inverters [electricity], inverter units, direct current-to-direct current converters, converter stations, rotary current switch gears, direct current switch gears, cable reels [electric connections], condensers [capacitors], storage batteries, diverters, stepping switches, on-load tap changers; switching equipment, switch cabinets (electricity), switchboxes (electricity), switch panels (electricity), terminal boxes, distribution cabinets (electricity), connection boxes (electricity), inter-liner (s), cut-off contactor, switches, electric, transducers (current and voltage), isolators, overhead lines, sensors; contactors; breathers for power transformers; sensors and measuring devices for temperature, level, flow, speed, acceleration, voltage (mechanical), shaping, bending, expansion, shearing, torsion, pressure, humidity, surface vibrations, sound, vibrations, radiation (electromagnetic), light and microwaves; sensors and measuring devices for current (electric), voltage (electric), energy (electric), power (electric), impedance (electric), power factor, phase shift, loss factor, partial discharge, the analysis of dissolved gases and the transformation ratio of transformers [electricity]; electric resistors, electromagnetic coils and conduits; electric sensors, electronic sensors, electro-optical sensors, optical fibre sensors, acoustic sensors, optical sensors, photoelectric sensors, piezoelectric sensors, sensors for installation control and engine control; computers, computer hardware, computer software, software for computers, communication interface units, apparatus for transmission of communications; installations, equipment and computer software for conducting, distributing, switching, transforming, accumulating or controlling electricity; computer software for operating, controlling, monitoring and testing drives, motors and engines, wind power installations, wind farms, generators, technical, chemical and electric installations, equipment and apparatus, electricity supply systems, mains, solar modules, photovoltaic installations, transformers and converters; installations, equipment and computer software for controlling, monitoring and testing electric installations, equipment and apparatus for high-voltage direct current transmission, converter stations, three-phase current switching stations, dc current switching stations, coils, capacitors, accumulators, apparatus for commutation, tap changers, sensors, measuring equipment, control equipment and monitoring equipment