1. Subject area

Public distribution networks are located between :

• source substations, which receive energy at high voltage above 50 kV (high voltage level B or HTB), transform it and send it to high voltage, between 1 kV and 50 kV (high voltage level A or HTA);

• private delivery points with HTA/BTA substations, for a company, or low-voltage connections, between 50 and 500 V (low-voltage level A or BTA), for a private individual who receives energy on his connection.