Three phase High Voltage electric systems connected to transformers or generators that are solidly grounded may experience transient overvoltages during fault conditions due to the line capacitances getting charged and discharged.
Besides, the intensity of a ground fault will be greater and will be accompanied by a flashover. This may be dangerous to personnel who are in the vicinity.
The damage to the equipment is also extensive as a higher current flows in solidly grounded system. The conductors carrying the current are subjected to extensive electrical and mechanical stresses.
The ground current which flows through the soil can pose a danger to people if the step potential exceeds the safe limits.
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Current Limiting Fuses
Current limiting fuses are used in systems where high fault levels can result in excessive fault currents. The fuses function
as normal fuses; however, they are designed to limit the fault current to low levels when they operate.
During normal operation, the fuse has a low resistance. Read More
Current limiting fuses are used in systems where high fault levels can result in excessive fault currents. The fuses function
as normal fuses; however, they are designed to limit the fault current to low levels when they operate.During normal operation, the fuse has a low resistance. Read More
and about 22,000 miles of new high-tech power lines to carry the electricity to cities, according to the study from the Energy Department's National Renewable Energy Laboratory. 
