Thanks Mark ,
Good tips,
but I don't know if it is allowed to use such solution (controlled valve on discharge) in cases where ESP are used for emergency case like evacuating the floods, etc ?
edison123 (Electrical):
Yes , VFD is a solution but costly and also more consideration rather than a RVSS (no frequency change)!
we are trying to find a solution based on RVSS ( no freq. change)
https://vfds.com/blog/what-is-a-soft-starter/
Thanks Gr8blu,
maybe it is better from now I use RVSS instead of SS. so we are trying to not using VFD.
of course there will be bypass switch after start-up.
Thanks edison123
as mentioned client asks for RVSS.
Thanks waross (
yes your guess is correct, line current needs to be limited due...
Hello Fellows
I have a case to discuss,
we have a 11kV submersible motor , 1000kW.
it is asked to use soft starter for starting.
there is 2 limitation:
1- the submersible pump shall reach half nominal speed in less than 5 second which is due to mechanical requirement of the pump,
2- we are...
