Network types according to DIN VDE 0100-310

A distinction is made between different network types in the context of the safety assessment. The differences relate to the number of live conductors and earthing Points.

The network types are as follows:

  • TN -Netze
  • TT-Netze
  • IT-Netze

T = Terra (Latin for earth)

N = Neutral

I = Isolation

S = Séparé (French for separate)

C = Combiné (French for combined)

The neutral point of the source is earthed directly in the TN network. The bodies of the connected devices are connected to the neutral point of the network via an earth lead.