Electrical switchgear in the nature of voltage and/or current controllers for electric power lines; electric power converters using power semi-conductors for conducting, transporting, distributing, switching, accumulating, regulating, checking or controlling electric power; apparatus, namely, voltage and/or current regulators for electric power used for checking, controlling and regulating electric power converters; supervision and control apparatus, namely, protective electric relays, electrical unit controllers, electric meters, electrical transducers and intelligent devices in the nature of smart electrical controllers, linked by a fiber-optic network and computer software used to integrate protect, control, monitor, and manage communication architecture for electric power; computers, computer software and recorded computer programs used to check, control and regulate electric converters and used for programming, implementing and operating the aforementioned apparatus, instruments, installations and software; computer software for providing access to a computer network or a data transmission network for checking, controlling and regulating electric power converters; computer software for providing access to computer network or data transmission network for checking, controlling and regulating electrical and electronic apparatus and instruments which use power semi-conductors for conducting, transporting, distributing, switching, accumulating, regulating, checking or controlling electric power; electric power converters comprised of pre-assembled units containing voltage and current generators; switchgear cubicles, namely, cubicles composed primarily of electric batteries, and cooling equipment in the nature of air ventilators for electronic components or water cooled heat sinks for use in electronic components and switchgear controlling and protecting electronic apparatus and instruments in the nature of electrical switchgear and switchboards used with electric power converters; filters, namely, harmonic filters for electrical networks and converters using capacitors and inductors. high and medium tension electrical apparatus and instruments, namely, circuit breakers, electrical switch disconnectors, lightning conductors, voltage dividers and power transformers for conversion substations for transporting, distributing and supplying and converting electric power