| Includes | Variable frequency drives in instrumentation/control-related applications. |
| Alternate Terms/Abbreviations | AFD: adjustable frequency drive. ASD: adjustable speed drive. VFD: variable frequency drive. VSD: variable speed drive. |
| See | 26 10 00 for medium-voltage motor controllers including medium-voltage variable frequency drives. 26 29 00 for low-voltage controllers for contactors and motors, including low-voltage variable frequency drives. 40 96 00 for saturable core reactors. |