How AC power and DC signal grounding differ from each other.?

an AC signal change its value according to time it vary depending on its peek valve ex:Vpeek =220v then it vary between +220 and -220 also it depends on its frequency usually it is 50 HZ and in my country our AC signal have an equation ofV(t) = 220 sin(2π50) or 220 cos(2π50) and rhe equation will change if we are talking about an 3 phase line a DC voltage signal do not change according to time it have a constant value ex :V(t)=10

An equipotential bonding is a protection allowing to guarantee the absence of electric potential between different electrically conductive elements (metal framework, ground ... and being able to disturb the animals, even to hurt them.) The equipotential bonding as well as its grounding allow any current wande

This is agood questions. you can get the answer on the following report:

https://electrical-engineering-portal.com/direct-current-distribution-systems