| Subject | English | Spanish |
| commun. | common diagram system | sistema de selección de canal |
| auto.ctrl. | common diagram telecontrol system | sistema de telecontrol de selección de canal |
| el.gen. | system diagram | esquema de una red |
| comp., MS | system diagram | diagrama de sistemas (The diagram used to design an application system composed from applications or other systems. The system diagram (.sd) file contains information based on the System Definition Model (SDM)) |
| earth.sc. | system diagram | esquema de la red |
| el.gen. | system operational diagram | esquema de una red en explotación |
| el.gen. | system operational diagram | esquema de explotación de una red |
| el.gen. | three-phase system diagram | esquema trifásico de una red |