IT delta

[ggunn]

On the spec sheet for the SolarEdge SE 120K I see:
Supported Grids WYE: TN-C, TN-S, TN-C-S, TT, IT; Delta: IT

What does the "IT" mean?

 

[wwhitney]

See https://en.wikipedia.org/wiki/Earthing_system

[I'm not familiar enough with the terminology to answer, just familiar enough to know where to look.]

Cheers, Wayne

 

[tortuga]

As I understand it an IT system is a what we call a ungrounded system (the I part) typically with ground detectors and or residual current detectors. The 'T' indicates that there is an equipment grounding conductor that goes back to a GEC and the ground detectors.

 

[ggunn]

As I understand it an IT system is a what we call a ungrounded system (the I part) typically with ground detectors and or residual current detectors. The 'T' indicates that there is an equipment grounding conductor that goes back to a GEC and the ground detectors.

That is consistent what what I have been able to find out as well. Thanks!