Overviews of selected STN groups (by classification criteria) for electrical equipment within specific voltage ranges

LVD - (low-voltage electrical equipment)

05…, 18…., 33…., 34…., 35…., 36…., 37….
05 – WELDING, SOLDERING, CUTTING OF METALS AND PLASTICS
0506-0522
0506	Safety regulations
0520	Machinery and equipment, general
0522	Power sources for arc welding
18 - AUTOMATION
1830-1870
1830	Industrial automation systems
1870	Automatic controllers, power supplies, components
19 - OPTICAL INSTRUMENTS, EQUIPMENT FOR CINEMATOGRAPHY AND REPROGRAPHY
1920	Lasers and laser equipment
33 - ELECTRICAL ENGINEERING - ELECTRICAL REGULATIONS
3301-3360
3301	Terminology, standards, units, documentation
3303	Environment for electrical equipment
3304	Insulation coordination
3320	General installation regulations
3321	Common Establishment Regulations
3322	Installation Regulations for Electrical Equipment of Machines
3334	Electromagnetic Compatibility
3341	Installation regulations for radio communication equipment
3350	Installation regulations for electrothermal equipment
34 - ELECTRICAL ENGINEERING
3404-3478
3404	Connection equipment
3413	Special electrical equipment (cinemas, theaters, cultural centers, elevators, advertising signs, lightning rods, etc.)
3415	Electrical transport equipment
3456	Measurement and testing—methods and procedures
3470	Conductors, general
3471	Bare conductors: testing and measurement of bare and insulated conductors
3472	Cable cores
3474	Power conductors
3475	Insulated distribution conductors
3476	Power cables
3477	Insulated signal wires and cables
3478	Signaling cables
35 - ELECTRICAL ENGINEERING
3500-35
3500	General information on rotating electrical machines
3513	Power transformers and instrument transformers
3515	Static power converters
3517	Thyristor drives
3534	High-current relays
3535	Measuring relays and protections
3541	Low-voltage high-current switches
3543	Low-voltage switches and control devices for industrial use
3545	Sockets and plugs
3547	LV and HV fuses
3562	Electricity meters and meters for basic quantities, accessories
3564	Standards, decade boxes, bridges, etc.
3565	Electronic measuring instruments
3570	Distribution boards, instrument cabinets, and sets
3571	High-voltage switchgear
3582	Capacitors
3597	Protective and work equipment for operators
36 - ELECTRICAL ENGINEERING
3600-3690
3600	Lighting, general
3601	Light sources (incandescent bulbs, fluorescent lamps, discharge lamps)
3602	Fluorescent lamps, discharge lamps
3603	Components, bases, and sockets for light sources
3605	Terminology of electric lamps and ballasts
3606	Electric luminaires, general, and indoor and outdoor luminaires
3607	Electronic flash units
3610	Appliances for industry, municipal services, and households, in general
3619	Electrical control devices for household and similar purposes
3645	Fuel cell technology
3646	Photovoltaic components
3656	Road Traffic Signaling Systems
3670	Radio technology, general
3672	Antennas
3677	Gas lasers and laser modulation equipment
3679	Effects of electromagnetic fields on humans
3683	Audiovisual, imaging, and television equipment
3688	Electroacoustic measurement
3690	Information processing machines, general
37 - ELECTRICAL ENGINEERING - POWER ENGINEERING
3700-3715
3700	Electrical conduit and accessories
3701	Supporting materials for low-voltage indoor wiring
3705	Cable ties and clips
3706	Fasteners, basic standards
3715	Terminal blocks and terminal strips