- Airport lighting transformers
- Autotransformers for switchboards, except telephone switchboards
- Autotransformers, electric (power transformers)
- Ballasts for lighting fixtures
- Control transformers
- Current limiting reactors, electrical
- Distribution transformers, electric
- Doorbell transformers, electric
- Electric furnace transformers
- Feeder voltage regulators and boosters (electric transformers)
- Fluorescent ballasts (transformers)
- Generator voltage regulators, electric induction and step type
- Ignition transformers
- Instrument transformers, except portable
- Isolation transformers
- Lighting transformers, fluorescent
- Lighting transformers, street and airport
- Line voltage regulators
- Luminous tube transformers
- Machine tool transformers
- Ratio transformers
- Rectifier transformers
- Signaling transformers, electric
- Specialty transformers
- Street lighting transformers
- Toy transformers
- Transformers, electric power
- Transformers, for electronic meters
- Transformers, reactor
- Tripping transformers
- Vibrators, interrupter
- Voltage regulating transformers, electric power
- Voltage regulators, transmission and distribution
|