67 ABNT NBR 16518-2017 2017-06-29 Portuguese Insulating vegetable oil for electrical equipments - Guide for supervision and maintenance 68 ABNT NBR 16603 Errata 1-2017 2017-06-29 Portuguese Equipamento de prote莽茫o individual - Cal莽ado isolante el茅trico para trabalhos em instala莽玫es el茅...