Question about calculating voltage drop on 3 phase inductive circuits

[Haji]

the VD which is defined as (|Vs| - |Vr|) is the number you need to know to derive |Vr| from knowing|Vs|. In that same situation, knowing |Vs - Vr|, or even knowing (Vs - Vr) is not as relevant.

Yes. You are correct. For knowing the load voltage magnitude, a knowledge of (|Vs| - |Vr|) and |Vs| is enough. But for knowing the exact voltage drop in the feeder, it is not enough.

 

[mivey]

Yeah. He's across the big pond anyway so we are safe from his wrath.

Hmmm. No volley from the UK? I thought Mrs. B might mobilize the local troops.