Wye phase

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Triton7

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On the Wye Phase, what does the the 120 degrees mean to vectorally make it 208 volts?
im not understanding that. Help please..
 
Triton7 said:
On the Wye Phase, what does the the 120 degrees mean to vectorally make it 208 volts?
im not understanding that. Help please..
Click to expand...
Your use of terminology for 3 phase systems seems to be lacking. Your question doesn't make sense. Try starting here to get a basic understanding then if there is something you don't get, come back.
 
Jraef said:
Your use of terminology for 3 phase systems seems to be lacking. Your question doesn't make sense. Try starting here to get a basic understanding then if there is something you don't get, come back.
Click to expand...

I took a look at that site and it appears there is something wrong with it. The graphics are messed up with 'open delta' being in several places incorrectly.
 
Triton7 said:
On the Wye Phase, what does the the 120 degrees mean to vectorally make it 208 volts?
im not understanding that. Help please..
Click to expand...
Vector representation line to neutral voltages are L1=120V@0?, L2=120V@-120?, and L3=120V@-240?. With their tails at common vertex, line-to-line voltages are represented by vectors drawn from head to head of the three L-N vectors. These three new vectors will have a magnitude of 208V with angles that are +/- 30? out-of-phase with the connected L-N vectors, forming three (3) 30?-120?-30? isoceles triangle.
 
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