A WAY FOR REDUCING ENERGY EXPENDITURES FOR PROTECTION OF UNDERGROUND METAL CONSTRUCTIONS
For reduction of current losses and energy overexpenditure a way on their minimization for protection of underground metal constructions is developed. It is based on input in a contour of protective grounding of the device executed on the basis of series and in parallel connected varistors. For its realization it is possible to use the nonlinear overvoltage limiter.