Permitted voltage systems
Information on voltage systems | Information on permissibility |
|---|---|
TN and TT systems – voltage systems with directly grounded star point. | Use is possible without restrictions. |
IT systems – voltage systems with non-grounded star point. | Use is only permitted adhering to specific measures. The measures are described in chapter "Use in IT systems". |
Voltage systems with grounded outer conductor. | Not permitted. |
