English to Italian Tech/Engineering Electronics / Elect Eng

In the IT system there is no direct connection between the liveconductors and earthed components; the chassis of the electricalsystem is earthed.
The IT system corresponds with the system where a protective earth system for protective measures is applied.

Explanations
First character = grounding condition of the power supply source
• T = direct grounding of a point
• I = either insulation of all live parts from earth or connection of one
point with earth via impedance
Second character = grounding condition of chassis of the electrical
equipment
• T = chassis directly earthed, independently of any grounding of a point
in the power supply
• N = chassis connected directly with the system earth in AC systems,
the earth point is normally the neutral point
Additional characters = arrangement of the neutral conductor and
protective earth conductor
• S = separate conductors for neutral and protective earth functions
• C = neutral and protective earth functions combined in a single
conductor (PEN) Combination between neutral conductor and protective earth functions.
NSV0_01080
L1
L2
L3
PEN
N
PE
1