Sorry to disagree, but an "attractive" force might have caused then to touch, it would not have caused 1 line to swing over the ther two and wrap around them.
And the field creates between 2 conductors, 50hz, 120Deg phase separation (3 phase) would be 2/3rds repulsive...
OK, I take it from the astounding interest and the pure number of replies that;
Nobody knows - or they arent enough genuine propellerheads outthere with the math skills to work it out (which is good, because then I don't feel quite so stupid), or
Nobody cares (which makes this whole thing...
Good morning Gentlemen (and Ladies),
I'm looking for some help from you HV experts out there.
I have had an event where it is believed that a flooded transformer connection box induced a fault on to a 33kV 3phase transmission line, and the fault current was enough for the repulsive forces...