Electric apparatus and instruments for the conveying, conducting, distribution, transformation, accumulation, regulating, filtering, equalization, measuring, signaling, checking and control of electric current; electric filters; electric active filters; active power filters for use in electric power systems; active harmonic filters; electric power loss indicators; voltage compensators and alternating current compensators; electrical disturbance attenuators; electric condensers; voltage regulators and regulators of electric current; inverters; electric converters; main power conditioners; transformers; capacitors for energy storage
Electrical and Scientific Apparatus