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	Subject - Insulation Coordination - Lightning Arresters durvaldo I would like to know about topics related to Insulation Coordination and Lightning Arresters choice for HV Transmission Networks ( > 100 kV). I have some experience in this topic and I would like to know how the topic is treated in other countries. Related Topics:Protection Level,BIL and SIL of transformers and other equipment, Residual voltage of ZnO arresters, TOV(transitory overvoltage), long HV lines, etc. Thanks.