List of the CPV codes beginning with 31 : 2nd level
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| CPV CODE | DESCRIPTION |
| 31000000-6 | Electrical machinery, apparatus, equipment and consumables; Lighting. |
| 31100000-7 | Electric motors, generators and transformers. |
| 31110000-0 | Electric motors. |
| 31111000-7 | Adapters. |
| 31120000-3 | Generators. |
| 31121000-0 | Generating sets. |
| 31121100-1 | Generating sets with compression-ignition engines. |
| 31121110-4 | Power converters. |
| 31121111-1 | Electric rotary converters. |
| 31121200-2 | Generating sets with spark-ignition engines. |
| 31121300-3 | Wind-energy generators. |
| 31121310-6 | Windmills. |
| 31121320-9 | Wind turbines. |
| 31121330-2 | Wind turbine generators. |
| 31121331-9 | Turbine rotors. |
| 31121340-5 | Wind farm. |
| 31122000-7 | Generator units. |
| 31122100-8 | Fuel cells. |
| 31124000-1 | Steam-turbine generator and related apparatus. |
| 31124100-2 | Turbine generator sets. |
| 31124200-3 | Turbine generator control apparatus. |
| 31126000-5 | Dynamos. |
| 31127000-2 | Emergency generator. |
| 31128000-9 | Turbogenerator. |
| 31130000-6 | Alternators. |
| 31131000-3 | Single-phase motors. |
| 31131100-4 | Actuators. |
| 31131200-5 | Anodes. |
| 31132000-0 | Multi-phase motors. |
| 31140000-9 | Cooling towers. |
| 31141000-6 | Water coolers. |
| 31150000-2 | Ballasts for discharge lamps or tubes. |
| 31151000-9 | Static converters. |
| 31153000-3 | Rectifiers. |
| 31154000-0 | Uninterruptible power supplies. |
| 31155000-7 | Inverters. |
| 31156000-4 | Interruptible power supplies. |
| 31157000-1 | Inductors. |
| 31158000-8 | Chargers. |
| 31158100-9 | Battery chargers. |
| 31158200-0 | Supercharger. |
| 31158300-1 | Turbocharger. |
| 31160000-5 | Parts of electric motors, generators and transformers. |
| 31161000-2 | Parts for electrical motors and generators. |
| 31161100-3 | Excitation systems. |
| 31161200-4 | Gas cooling systems. |
| 31161300-5 | Generator rotors. |
| 31161400-6 | Primary water systems. |
| 31161500-7 | Seal oil systems. |
| 31161600-8 | Stator cooling water systems. |
| 31161700-9 | Parts of steam generators. |
| 31161800-0 | Parts of gas generators. |
| 31161900-1 | Voltage-control systems. |
| 31162000-9 | Parts of transformers, inductors and static converters. |
| 31162100-0 | Parts of condensers. |
| 31170000-8 | Transformers. |
| 31171000-5 | Liquid dielectric transformers. |
| 31172000-2 | Voltage transformers. |
| 31173000-9 | Instrument transformer. |
| 31174000-6 | Power supply transformers. |
| 31200000-8 | Electricity distribution and control apparatus. |
| 31210000-1 | Electrical apparatus for switching or protecting electrical circuits. |
| 31211000-8 | Boards and fuse boxes. |
| 31211100-9 | Boards for electrical apparatus. |
| 31211110-2 | Control panels. |
| 31211200-0 | Fuse boxes. |
| 31211300-1 | Fuses. |
| 31211310-4 | Cut-outs. |
| 31211320-7 | Fuse blocks. |
| 31211330-0 | Fuse wires. |
| 31211340-3 | Fuse clips. |
| 31212000-5 | Circuit breakers. |
| 31212100-6 | Overhead circuit breakers. |
| 31212200-7 | Circuit testers. |
| 31212300-8 | Magnetic circuit breakers. |
| 31212400-9 | Miniature circuit breakers. |
| 31213000-2 | Distribution equipment. |
| 31213100-3 | Distribution boxes. |
| 31213200-4 | Distribution transformers. |
| 31213300-5 | Cable distribution cabinet. |
| 31213400-6 | Distribution system. |
| 31214000-9 | Switchgear. |
| 31214100-0 | Switches. |
| 31214110-3 | Isolating switches. |
| 31214120-6 | Earthing switch. |
| 31214130-9 | Safety switches. |
| 31214140-2 | Dimmer switches. |
| 31214150-5 | Drum switches. |
| 31214160-8 | Pressure switches. |
| 31214170-1 | Toggle switches. |
| 31214180-4 | Slide switches. |
| 31214190-7 | Limit switches. |
| 31214200-1 | Switch disconnector. |
| 31214300-2 | Outdoor switching installations. |
| 31214400-3 | Fuse switch disconnector. |
| 31214500-4 | Electric switchboards. |
| 31214510-7 | Distribution switchboards. |
| 31214520-0 | Medium-voltage switchboards. |
| 31215000-6 | Voltage limiters. |
| 31216000-3 | Lightning arrestors. |
| 31216100-4 | Lightning-protection equipment. |
| 31216200-5 | Lightning conductors. |
| 31217000-0 | Surge suppressors. |
| 31218000-7 | Busbars. |
| 31219000-4 | Protection boxes. |
| 31220000-4 | Electrical circuit components. |
| 31221000-1 | Electrical relays. |
| 31221100-2 | Power relays. |
| 31221200-3 | General purpose relays. |
| 31221300-4 | Socket relays. |
| 31221400-5 | Alternating voltage relays. |
| 31221500-6 | Mercury relays. |
| 31221600-7 | Time relays. |
| 31221700-8 | Overload relays. |
| 31223000-5 | Lamp-holders. |
| 31224000-2 | Connections and contact elements. |
| 31224100-3 | Plugs and sockets. |
| 31224200-4 | Coaxial connectors. |
| 31224300-5 | Connection boxes. |
| 31224400-6 | Connection cables. |
| 31224500-7 | Terminals. |
| 31224600-8 | Dimmers. |
| 31224700-9 | Junction boxes. |
| 31224800-0 | Cable joining kits. |
| 31224810-3 | Extension cables. |
| 31230000-7 | Parts of electricity distribution or control apparatus. |
| 31300000-9 | Insulated wire and cable. |
| 31310000-2 | Mains. |
| 31311000-9 | Mains connections. |
| 31320000-5 | Power distribution cables. |
| 31321000-2 | Electricity power lines. |
| 31321100-3 | Overhead power lines. |
| 31321200-4 | Low- and medium-voltage cable. |
| 31321210-7 | Low-voltage cable. |
| 31321220-0 | Medium-voltage cable. |
| 31321300-5 | High-voltage cable. |
| 31321400-6 | Underwater cable. |
| 31321500-7 | Submarine cable. |
| 31321600-8 | Shielded cable. |
| 31321700-9 | Signalling cable. |
| 31330000-8 | Coaxial cable. |
| 31340000-1 | Insulated cable accessories. |
| 31341000-8 | Insulated cable reels. |
| 31342000-5 | Insulated cable junctions. |
| 31343000-2 | Insulated cable joints. |
| 31344000-9 | Insulated cable glands. |
| 31350000-4 | Electric conductors for data and control purposes. |
| 31351000-1 | Electric conductors for access control systems. |
| 31400000-0 | Accumulators, primary cells and primary batteries. |
| 31410000-3 | Primary cells. |
| 31411000-0 | Alkaline batteries. |
| 31420000-6 | Primary batteries. |
| 31421000-3 | Lead batteries. |
| 31422000-0 | Battery packs. |
| 31430000-9 | Electric accumulators. |
| 31431000-6 | Lead-acid accumulators. |
| 31432000-3 | Nickel-cadmium accumulators. |
| 31433000-0 | Nickel-iron accumulators. |
| 31434000-7 | Lithium accumulators. |
| 31440000-2 | Batteries. |
| 31500000-1 | Lighting equipment and electric lamps. |
| 31510000-4 | Electric filament lamps. |
| 31511000-1 | Sealed-beam lamp units. |
| 31512000-8 | Tungsten halogen filament lamps. |
| 31512100-9 | Halogen bulbs, linear. |
| 31512200-0 | Halogen bulbs, bi-pin. |
| 31512300-1 | Halogen bulbs, dichroic. |
| 31514000-2 | Discharge lamps. |
| 31515000-9 | Ultraviolet lamps. |
| 31516000-6 | Infrared lamps. |
| 31517000-3 | Arc lamps. |
| 31518000-0 | Signalling lights. |
| 31518100-1 | Floodlights. |
| 31518200-2 | Emergency lighting equipment. |
| 31518210-5 | Stormlights. |
| 31518220-8 | Light stick. |
| 31518300-3 | Rooflights. |
| 31518500-5 | Mercury-vapour lamps. |
| 31518600-6 | Searchlights. |
| 31519000-7 | Incandescent and neon lamps. |
| 31519100-8 | Incandescent lamps. |
| 31519200-9 | Neon lamps. |
| 31520000-7 | Lamps and light fittings. |
| 31521000-4 | Lamps. |
| 31521100-5 | Desk lamps. |
| 31521200-6 | Floor-standing lamps. |
| 31521300-7 | Portable electric lamps. |
| 31521310-0 | Warning lights. |
| 31521320-3 | Torches. |
| 31521330-6 | Rechargeable portable electric lamps. |
| 31522000-1 | Christmas tree lights. |
| 31523000-8 | Illuminated signs and nameplates. |
| 31523100-9 | Advertising neon lights. |
| 31523200-0 | Permanent message signs. |
| 31523300-1 | Illuminated nameplates. |
| 31524000-5 | Ceiling or wall light fittings. |
| 31524100-6 | Ceiling light fittings. |
| 31524110-9 | Operating-theatre lamps. |
| 31524120-2 | Ceiling lights. |
| 31524200-7 | Wall light fittings. |
| 31524210-0 | Wall lights. |
| 31527000-6 | Spotlights. |
| 31527200-8 | Exterior lights. |
| 31527210-1 | Lanterns. |
| 31527260-6 | Lighting systems. |
| 31527270-9 | Platforms lighting. |
| 31527300-9 | Domestic lights. |
| 31527400-0 | Underwater lights. |
| 31530000-0 | Parts of lamps and lighting equipment. |
| 31531000-7 | Light bulbs. |
| 31531100-8 | Electric tubes. |
| 31532000-4 | Parts of lamps and light fittings. |
| 31532100-5 | Tube lamps. |
| 31532110-8 | Fluorescent tube lamps. |
| 31532120-1 | Compact fluorescent tube lamps. |
| 31532200-6 | Ring lamps. |
| 31532210-9 | Fluorescent ring lamps. |
| 31532300-7 | Globe lamps. |
| 31532310-0 | Compact fluorescent globe lamps. |
| 31532400-8 | Lamps sockets. |
| 31532500-9 | Lamp starters. |
| 31532510-2 | Starters for fluorescent lamps. |
| 31532600-0 | Lamp reactors. |
| 31532610-3 | Reactors for fluorescent lamps. |
| 31532700-1 | Lamp covers. |
| 31532800-2 | Lamp arms. |
| 31532900-3 | Fluorescent lights. |
| 31532910-6 | Fluorescent tubes. |
| 31532920-9 | Bulbs and fluorescent lamps. |
| 31600000-2 | Electrical equipment and apparatus. |
| 31610000-5 | Electrical equipment for engines and vehicles. |
| 31611000-2 | Wiring sets. |
| 31612000-9 | Electrical wiring looms for engines. |
| 31612200-1 | Starter motors. |
| 31612300-2 | Electrical signalling equipment for engines. |
| 31612310-5 | Blinkers. |
| 31620000-8 | Sound or visual signalling apparatus. |
| 31625000-3 | Burglar and fire alarms. |
| 31625100-4 | Fire-detection systems. |
| 31625200-5 | Fire-alarm systems. |
| 31625300-6 | Burglar-alarm systems. |
| 31630000-1 | Magnets. |
| 31640000-4 | Machines and apparatus with individual functions. |
| 31642000-8 | Electronic detection apparatus. |
| 31642100-9 | Detection apparatus for metal pipes. |
| 31642200-0 | Detection apparatus for mines. |
| 31642300-1 | Detection apparatus for plastics. |
| 31642400-2 | Detection apparatus for non-metallic objects. |
| 31642500-3 | Detection apparatus for timber. |
| 31643000-5 | Particle accelerators. |
| 31643100-6 | Linear accelerators. |
| 31644000-2 | Miscellaneous data recorders. |
| 31645000-9 | Pinball machines. |
| 31650000-7 | Insulating fittings. |
| 31651000-4 | Electrical tape. |
| 31660000-0 | Carbon electrodes. |
| 31670000-3 | Electrical parts of machinery or apparatus. |
| 31671000-0 | Glass envelopes and cathode-ray tubes. |
| 31671100-1 | Glass envelopes. |
| 31671200-2 | Cathode-ray tubes. |
| 31680000-6 | Electrical supplies and accessories. |
| 31681000-3 | Electrical accessories. |
| 31681100-4 | Electrical contacts. |
| 31681200-5 | Electric pumps. |
| 31681300-6 | Electrical circuits. |
| 31681400-7 | Electrical components. |
| 31681410-0 | Electrical materials. |
| 31681500-8 | Rechargers. |
| 31682000-0 | Electricity supplies. |
| 31682100-1 | Electricity boxes. |
| 31682110-4 | Electricity box covers. |
| 31682200-2 | Instrument panels. |
| 31682210-5 | Instrumentation and control equipment. |
| 31682220-8 | Mixing panels. |
| 31682230-1 | Graphic display panels. |
| 31682300-3 | Medium-voltage equipment. |
| 31682310-6 | Medium-voltage panels. |
| 31682400-4 | Overhead electrical equipment. |
| 31682410-7 | Overhead cable carriers. |
| 31682500-5 | Emergency electricity equipment. |
| 31682510-8 | Emergency power systems. |
| 31682520-1 | Emergency shutdown systems. |
| 31682530-4 | Emergency power supplies. |
| 31682540-7 | Substation equipment. |
| 31700000-3 | Electronic, electromechanical and electrotechnical supplies. |
| 31710000-6 | Electronic equipment. |
| 31711000-3 | Electronic supplies. |
| 31711100-4 | Electronic components. |
| 31711110-7 | Transceivers. |
| 31711120-0 | Transducers. |
| 31711130-3 | Resistors. |
| 31711131-0 | Electrical resistors. |
| 31711140-6 | Electrodes. |
| 31711150-9 | Electrical capacitors. |
| 31711151-6 | Fixed capacitors. |
| 31711152-3 | Variable or adjustable capacitors. |
| 31711154-0 | Capacitor banks. |
| 31711155-7 | Capacitor networks. |
| 31711200-5 | Electronic scoreboards. |
| 31711300-6 | Electronic timekeeping systems. |
| 31711310-9 | System for recording attendance. |
| 31711400-7 | Valves and tubes. |
| 31711410-0 | Cathode-ray television picture tubes. |
| 31711411-7 | Television camera tubes. |
| 31711420-3 | Microwave tubes and equipment. |
| 31711421-0 | Magnetrons. |
| 31711422-7 | Microwave equipment. |
| 31711423-4 | Microwave radio equipment. |
| 31711424-1 | Klystrons. |
| 31711430-6 | Valve tubes. |
| 31711440-9 | Receiver or amplifier valves and tubes. |
| 31711500-8 | Parts of electronic assemblies. |
| 31711510-1 | Parts of electrical capacitors. |
| 31711520-4 | Parts of electrical resistors, rheostats and potentiometers. |
| 31711530-7 | Parts of electronic valves and tubes. |
| 31712000-0 | Microelectronic machinery and apparatus and microsystems. |
| 31712100-1 | Microelectronic machinery and apparatus. |
| 31712110-4 | Electronic integrated circuits and microassemblies. |
| 31712111-1 | Phonecards. |
| 31712112-8 | SIM cards. |
| 31712113-5 | Cards containing integrated circuits. |
| 31712114-2 | Integrated electronic circuits. |
| 31712115-9 | Microassemblies. |
| 31712116-6 | Microprocessors. |
| 31712117-3 | Integrated circuit packages. |
| 31712118-0 | Integrated circuit sockets or mounts. |
| 31712119-7 | Integrated circuit lids. |
| 31712200-2 | Microsystems. |
| 31712300-3 | Printed circuits. |
| 31712310-6 | Populated printed circuit boards. |
| 31712320-9 | Unpopulated printed circuit boards. |
| 31712330-2 | Semiconductors. |
| 31712331-9 | Photovoltaic cells. |
| 31712332-6 | Thyristors. |
| 31712333-3 | Diacs. |
| 31712334-0 | Triacs. |
| 31712335-7 | Optical coupled isolators. |
| 31712336-4 | Crystal oscillators. |
| 31712340-5 | Diodes. |
| 31712341-2 | Light-emitting diodes. |
| 31712342-9 | Microwave or small signal diodes. |
| 31712343-6 | Zener diodes. |
| 31712344-3 | Schottky diodes. |
| 31712345-0 | Tunnel diodes. |
| 31712346-7 | Photosensitive diodes. |
| 31712347-4 | Power or solar diodes. |
| 31712348-1 | Laser diodes. |
| 31712349-8 | Radio frequency (RF) diodes. |
| 31712350-8 | Transistors. |
| 31712351-5 | Photo sensitive transistors. |
| 31712352-2 | Field effect transistors (FET). |
| 31712353-9 | Metal oxide field effect transistors (MOSFET). |
| 31712354-6 | Transistor chips. |
| 31712355-3 | Bipolar darlington or radio frequency (RF) transistors. |
| 31712356-0 | Unijunction transistors. |
| 31712357-7 | Insulated gate bipolar transistors (IGBT). |
| 31712358-4 | Junction field effect transistors (JFET). |
| 31712359-1 | Bipolar junction transistors (BJT). |
| 31712360-1 | Mounted piezo-electric crystals. |
| 31720000-9 | Electromechanical equipment. |
| 31730000-2 | Electrotechnical equipment. |
| 31731000-9 | Electrotechnical supplies. |
| 31731100-0 | Modules. |