Technical and electric installations, namely, electric power supply units, other than electricity generators, electricity grids, solar electric panels, transducers (current and voltage), isolators, overhead lines; sensors; buchholz relays, electric transformers with built-in dehumidifiers; contactors; sensors and measuring devices for temperature, level, flow, speed, acceleration, tension (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, resistance, electromagnetic waves; 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, interfaces 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 operating, 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