- Power and distribution transformers (3)
- Control transformers (1)
- Current limiting reactors, electrical (1)
- Distribution transformers, electric (2)
- Generator voltage regulators (1)
- Power transformers, electric (5)
- Transmission and distribution voltage regulators (1)
- Voltage regulating transformers, electric power (2)
- Specialty transformers (1)
- Electric furnace transformers (1)
- Electronic meter transformers (1)
- Ignition transformers, for use on domestic fuel burners (1)
- Machine tool transformers (1)
- Saturable reactors (1)
- Vibrators, interrupter (1)
