Yet again, we are debating with colleagues to choose the correct power symbols in our schematics.
Some argue that using the horizontal 4-lines symbol for GND is a misunderstanding because this is not a real ground. Others say that only arrows are valid. On the 60617-2 snippet below, one can see that in French, the 02-15-01 symbol is named "Terre" (Earth) in french, but "Earth/Ground" in english. Thus, I am used to using this symbol when something is physically connected to the Earth.
So my question would be: is there an ISO/IEC standard about power symbols used in EDA, and which symbol is used to differentiate signal "GND" from power ground connected to Earth?
Here are some examples in my EDA software:
In ISO/IEC 60617-2:1996 I only found these references. It seems that all other symbols are not standard. Is that correct?