| Cities | Type of current |
Frequency of current | Number of phases | Nominal voltage | Number of wires | Frequency stability |
| All | a.c. | 50 | 1,3 | 230/400 | 3,5 | yes |
| Type(s) of plug | |
| Type C | ![]() |
| Type F | ![]() |
| Note(s) | |
| 1 = The neutral wire of the secondary distribution system is grounded. | |
| 2 = A grounding conductor is required in the electrical cord attached to appliances. | |