Distribution transformers; Dry-type transformers; Voltage transformers; Transformers [electricity]; High voltage transformers; Current transformers; Impedance transformers; Welding transformers; Electric current transformers; Electrical reducing transformers; Electric voltage transformers; Power packs [transformers]; Mains transformers (Electric -); Electronic power transformers; Step-up transformers; Power transformers for amplification; Electrical transformers [for telecommunication apparatus]; Inductors [electricity]; Coils, electric; Choking coils [impedance]; High frequency coils; Magnets; Magnetic coils; Transient suppression coils; Choking coils for use in electrical apparatus; Electromagnetic relays; Electromagnetic switches; Line traps; Electrical filters; Inductance capacitance filters.;