This is a 750 kV line too in the Romanian coast. It come from Ukraine and go to Bulgaria. The working situation is similar than in Hungary. It is bigger line: 8 wires on one phase (!). One chain has 44 Insulators too. Here are 2x4x44 Insulators on one phase. 3 phases. 12x44 pieces are in the holder chains. Summa 1584 pieces. It is very much. These Insulators are too Russian glass suspensions. The Romanians think, the strain is better on 3 towers. They use this technology on smaller 400 kV lines too. I looks similar technology in big mountains, but nowhere in Europe where I have been.