| English | eng-000 |
| power frequency | |
| 普通话 | cmn-000 | 工业频率 |
| 普通话 | cmn-000 | 市电频率 |
| 普通话 | cmn-000 | 电流频率 |
| 普通话 | cmn-000 | 电源频率 |
| Deutsch | deu-000 | Netzfrequenz |
| eesti | ekk-000 | võrgusagedus |
| ελληνικά | ell-000 | βιομηχανική συχνότητα |
| English | eng-000 | commercial electricity frequency |
| English | eng-000 | industrial frequency |
| English | eng-000 | main frequency |
| English | eng-000 | mains-frequency |
| English | eng-000 | supply frequency |
| русский | rus-000 | промышленная частота |
| русский | rus-000 | частота сети |