17 METROLOGY AND MEASUREMENT. PHYSICAL PHENOMENA 17.220 Electricity. Magnetism. Electrical and magnetic measurements 17.220.20 Measurement of electrical and magnetic quantities 27 ENERGY AND HEAT TRANSFER ENGINEERING 27.160 Solar energy engineering29 ELECTRICAL ENGINEERING 29.020 Electrical engineering in general 29.035 Insulating materials 29.035.20 Plastics and rubber insulating materials 29.040 Insulating fluids 29.040.10 Insulating oils 29.060 Electrical wires and cables 29.060.01 Electrical wires and cables in general 29.060.10 Wires 29.060.20 Cables 29.080 Insulation 29.080.10 Insulators 29.080.20 Bushings 29.080.30 Insulation systems 29.120 Electrical accessories 29.120.01 Electrical accessories in general 29.120.10 Conduits for electrical purposes 29.120.20 Connecting devices 29.120.30 Plugs, socket-outlets, couplers 29.120.40 Switches 29.120.50 Fuses and other overcurrent protection devices 29.120.70 Relays 29.120.99 Other electrical accessories 29.130 Switchgear and controlgear 29.130.01 Switchgear and controlgear in general 29.130.10 High voltage switchgear and controlgear 29.130.20 Low voltage switchgear and controlgear 29.130.99 Other switchgear and controlgear 29.140 Lamps and related equipment 29.140.01 Lamps in general 29.140.10 Lamp caps and holders 29.140.20 Incandescent lamps 29.140.30 Fluorescent lamps. Discharge lamps 29.140.40 Luminaires 29.140.50 Lighting installation systems 29.140.99 Other standards related to lamps 29.160 Rotating machinery 29.160.01 Rotating machinery in general 29.160.10 Components for rotating machines 29.160.20 Generators 29.160.30 Motors 29.160.40 Generating sets 29.160.99 Other standards related to rotating mac hinery 29.180 Transformers. Reactors 29.220 Galvanic cells and batteries 29.220.01 Galvanic cells and batteries in general 29.220.20 Acid secondary cells and batteries 29.240 Power transmission and distribution networks 29.240.01 Power transmission and distribution networks in general 29.240.10 Substations. Surge arresters 29.240.20 Power transmission and distribution lines 29.240.30 Control equipment for electric power systems 29.240.99 Other equipment related to power transmission anddistribution networks 65 AGRICULTURE 65.040 Farm buildings, structures and installations 65.040.99 Other standards related to farm buildings and installations 77 METALLURGY 77.150 Products of non-ferrous metals 77.150.30 Copper products 83 RUBBER AND PLASTIC INDUSTRIES 83.040 Raw materials for rubber and plastics 83.040.10 Latex and raw rubber 83.040.20 Rubber compounding ingredients 91 CONSTRUCTION MATERIALS AND BUILDING 91.100 Construction materials 91.100.30 Concrete and concrete products 91.140 Installations in buildings 91.140.50 Electricity supply systems |