Explanation of terms

摘要

A grounded electrical system is one in which at least one conductor from the system, or point on the conductive system, is connected to either earth or some other conducting body that serves in place of the earth. This connection can be with or without an intermediary impedance device. With an extremely low-impedance device, the system is said to be solidly or effectively grounded. With an impedance device, the system can be either resistively or reactively grounded.