Effectiveness of line surge arresters for lightning protection of overhead transmission lines

The importance of lightning protection of overhead lines increases with social demand for power supply quality. Applying metal-oxide surge arresters to overhead transmission lines became a state-of-art technique for lightning protection; however, more knowledge and further experiences to utilize arresters still needs to be shared among the engineers worldwide. The Technical Brochure by WG C4.39 intends to provide such information for the more effective implementation.