Lightning protection of distribution lines by long flashover arresters (LFA)

The paper describes a new method of lightning protection of overhead distribution lines by long flashover arresters (LFA) which were invented and developed by the authors. The LFAs are low-cost arresters which are installed in parallel or in series to the line insulators. An insulator with characteristic LFA (ILFA) is also presented. With the use of LFAs or ILFAs the number of line outages may be drastically reduced. The LFA principle, its main applications and some laboratory test results are presented.