| Subject | English | German |
| el.tract. | maximum voltage between segments in a commutator machine | maximale Lamellenspannung eines Kommutatormotors |
| el.tract. | mean voltage between segments in a commutator machine | mittlere Lamellenspannung eines Kommutatormotors |
| tech. | voltage between collector bars segments | Lamellenspannung |
| tech. | voltage between segments | Stegspannung |