EPRM Phase-Phase voltage sequence

[Lielec11]

I'm reviewing through the latest version of the EPRM and came across something strange relating to positive phase sequence (ABC). On page 34-4:

VCA=Vp /_0

VAB=Vp /_-120

VBC=Vp /_-240

In all my other studies and text I've always seen it written:

VAB=Vp /_0

VBC=Vp /_-120

VCA=Vp /_-240

Is there a reason the Camara book writes it differently? Won't it change my phase angles depending on which way I solved a problem?

 

[DK PE]

You have to be given a reference such as "choose Van at zero degrees" to work out a specific answer in such a problem where the solution requires phase angles. I would say you're missing a √3 in the terminology I'm used to such as VAB = √3 Vp /_30 (given Van at zero degrees) but I don't know the context of the book.

 

[EItoPE]

In this problem VCA is taken as reference instead of VAB or VAN.