Hello everyone.
I have a question about the following circuit.
I have a three-phase system with a line voltage of 400 volts and an impedance of 25<30 per each phase.
I want to calculate the voltage at each impedance . How can I know what the angle of the voltage between B and C is?

 

Hello everyone.
I have a question about the following circuit.
I have a three-phase system with a line voltage of 400 volts and an impedance of 25<30 per each phase.
I want to calculate the voltage at each impedance . How can I know what the angle of the voltage between B and C is?
View attachment 279680

It is determined by the angle between the windings on the stator.
What other figure than 120° could you possibly expect?

 

By definition a 3-phase mains system has 120° between phases.

 

Hello everyone.
I have a question about the following circuit.
I have a three-phase system with a line voltage of 400 volts and an impedance of 25<30 per each phase.
I want to calculate the voltage at each impedance . How can I know what the angle of the voltage between B and C is?
View attachment 279680

Are you asking about the magnitude of the angle, or polarity of it (whether B leads C or C leads B)?

In a three-phase system, each phase is 120° from the other two. As for who leads who, that is arbitrary (but important!). So in this case you can probably define it as you like. In the real world, the phases are usually color-coded, but the colors and associated sequencing varies by country and also by voltage.