محمد سعید جعفرپور
In the existing TNS grounding system, there is no solution to this issue other than installing a toroidal current transformer. But if the employer accepts the TNC-S plan, this problem can be solved by moving the ground point to a new location as illustrated below. In the new conditions, the earth fault protection provided for the generator will act as a restricted earth fault protection system and will protect the entire winding of the generator.
Reference IEEE C37.101
