Thank you for your responses but I think I have answered my own question.
I was wondering where the move from star/delta crossed to auto-transformers and/or reactive starting because of the size of the contactors required then I realised that there will still be a need for a contactor to switch out the transformer or reactor anyway. So star/delta is OK as long as you have the contactors to implement it.
Does anyone know if I can get a 100kW soft-start unit that utilises single function components rather than micro-controllers or microprocessors?
Thank you for your responses but I think I have answered my own question.
I was wondering where the move from star/delta crossed to auto-transformers and/or reactive starting because of the size of the contactors required then I realised that there will still be a need for a contactor to switch out the transformer or reactor anyway. So star/delta is OK as long as you have the contactors to implement it.
Does anyone know if I can get a 100kW soft-start unit that utilises single function components rather than micro-controllers or microprocessors?