I think I know the answers to these questions, but I would like confirmation/additional information.
1. Does phase gap between 25Hz and 60Hz catenary require lowering of the pantograph or slowing down? Assume same voltage to ground.
1a. Can transformers made for 25Hz handle 60Hz without modifications (on-the-fly while in motion or in the shop)? Again, assume same voltage.
2. How long is the section of catenary that is unpowered in a phase gap? Does it matter if the wire is constant tension or not?
3. Are the Arrows the only equipment that cannot change traverse a voltage gap 25kV to 12.5kV?
1. Does phase gap between 25Hz and 60Hz catenary require lowering of the pantograph or slowing down? Assume same voltage to ground.
1a. Can transformers made for 25Hz handle 60Hz without modifications (on-the-fly while in motion or in the shop)? Again, assume same voltage.
2. How long is the section of catenary that is unpowered in a phase gap? Does it matter if the wire is constant tension or not?
3. Are the Arrows the only equipment that cannot change traverse a voltage gap 25kV to 12.5kV?