Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
I have a small system with two motors that are running on
380 vac, 60 hz. These motors are expensive and I usally get
them from Brazil. I am adding another motor to the system,
but I want to purchase a 480 vac, 60 hz motor to use. It
will be on a VFD that is rated fro 380 thru 480. Is this
posible and will I have to use a larger motor and derate it?
we have earthmat at 110KV substation.we would like to take
earth resistance.b some says that by connecting earth megger
terminals (C1,P1) at middile point of earthmat (at riser)
will cause voltage gradient at other earthmat nods and dont
get exat earth resistance.when connecting at end nods will
get exat value . is it correct .please explain