can anyone please tell me whether those stated transmission voltages like 110kV, 330kV etc are phase to phase or phase to ground? And how do i figure that out?
Thank you for your response, though sorry i think i wasn't very clear with my question or did you mean that voltages of three phase systems are always given as phase to phase?
Let's say we have a power line with phase to ground voltage of 220V, then a phase to phase voltage for this line would be 220V*1.73=380V. If 110kV is phase to ground(but i don't know if it is) then phase to phase would be 110kV*1.73=190kV if it's phase to phase then phase to ground would be 110kV/1.73=63kV. So i want to know if this 110kV means phase to ground or phase to phase, because it makes a huge difference in calculations. Thank you.
Well this "earth as ground" thing is probably because I have been reading mainly American literature though i'm neither American nor British I asked this question because i study (at a college) electrical engineering (high voltage systems - generation, transmission, distribution and so on). And as funny as it sounds i wasn't sure which voltage is given by default. Anyways, problem solved. Thank you for your responses.