9 Electrical branches, jacks and sockets, and ducts and leadthroughs; electrical switch cabinets and switchboards; electric cables and transmission systems composed of cables, cable lugs, compression joints, terminal clamps, plug-in cable connectors and terminators, fuse connecting blocks, electrical transmission lines and switch gears; insulated and non-insulated electric wires; electric cable cabinets and boxes; electric capacitors and contacts; electrical collectors; electrical terminals, transformers, voltage and charge eliminators; linear and non-linear resistors; switches for low-, medium-, and high-voltages; switches for generators; direct current switches; power circuit switches and breakers; disconnecting and earthing switches; electrical safety, earthing and short-circuiting devices, namely, short-circuiting cables, earthing cables, and earthing clamps, lancing rods, insulating protective shutters; high-voltage armatures; electrical power supply devices, namely, contact wire splices, electrical earthing and short-circuiting devices, namely, short-circuiting cables, earthing cables, and earthing clamps for trolley wires, dropper clamps, compression tap off clamps, and compression feeder clamps for railway traffic; electrical apparatus and instruments, namely, voltage current and charge sensors and monitors, integrated sensor low voltage for logging current voltage and active power, vibration measurers for analysis and detection of overhead line vibrations, data loggers for mobile use, transformer control units, and data loggers for stationary panel mounting; electrical current and voltage transformers and converters; electrical switchgears for local networks; transducers; sensors, namely, current, voltage, charge, and vibration sensors; electronic data processing apparatus, namely, computers and systems composed of a central processing unit, a semiconductor memory and input and output devices, namely, keyboards and monitors; microprocessors; data storage media, namely, hard and floppy disk memories, compact disks, digital versatile disks, and magnetic tapes comprising computer programs and software in the field of power generation, transmission and distribution for controlling and signaling; electrical carrier and support devices, namely, consoles for electrical power distribution boards and cabinets; housing for electrical switchboards, masts for high-voltage lines, electrical transmission lines, switch gears, vibration dampers for overhead lines; distribution boards and cabinets for electrical power-distribution and power-transmission using low, medium, and high voltage