Transformers [electricity], switching equipment, stepping switches, on-load tap changers, reactors, capacitances, arc suppression coils, electrodes, earthing or discharge devices, cables, overhead lines, switch gear, sensors; electric apparatus and instruments and computer programs for the monitoring, testing and control of transformers, circuit breakers, reactors, drives, wind power installations, generators, cables, overhead lines, switch gears, filter circuits, compensating reactors, electric switches, technical, chemical and electric installations, furnishings and apparatus; measuring assemblies, faraday assemblies, electric power supply units, voltage regulators, test lab devices and equipment, AC test systems, high current test systems, DC test system, surge voltage and surge current test systems, high voltage dividers, electric filters; 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]; oscilloscopes, data loggers, voltage regulators, electrical filters and electronic filters, rogowski coils, high frequency current transformers, uhf sensors, coupling capacitors, optical fibre sensors, sensors and installations for measuring small or large signals; computer, computer hardware, computer software, cloud and cloud applications, interfaces for computers, communication interface units, apparatus for transmission of communications; equipment and computer software for conducting, distributing, switching, transforming, storing, influencing, monitoring and controlling electricity; computer software for influencing, pressing, controlling, monitoring, assessing and examining drives, motors, wind power installations, wind farms, generators, cables, switch gears, overhead lines, filter circuits, compensating reactors, electric switches, technical, chemical and electric installations, furnishings and apparatus