| Subject | English | German |
| opt. | accuracy factor | Genauigkeitsfaktor |
| transf. | accuracy limit factor of a protective current transformer | Genauigkeitsgrenzfaktor eines Stromwandlers für Schutzzwecke |
| el. | rated accuracy factor | Nenn-Ueberstromziffer |
| el. | rated accuracy limit factor | Ueberstromziffer |