Researches related to the use of Natural Ester Fluids as a refrigerant of power transformers have been developed in other countries with successful results. In Colombia there is no a procedure to control the use of these esters in electrical apparatus. so the current implementations are regulated by NTC 1465 standards for mineral esters. This new proposal involves the composition and ... https://trendingcustomes.shop/product-category/nonagon-acrylic-plaque/