Soft starter Basic Knowledge

C

Curt Wuollet

The theory is that you can start big motors without enormous starting currents which is handy if you have a limited service, long lines, or the line sags cause other problems. The whole idea seems to be that you can control the current allowed vs time. Works best for motors that start under diminished load like blowers, etc.

Regards
cww
 
My question is, is soft starter control voltage or frequency or both? And if it can control any one quentity then what provision should be provided for it? What parts are there due to which it can be used for controlling?
 
C

Curt Wuollet

A VFD may well do both. Some soft starters don't have inverters and so work by limiting current or voltage.

Regards

cww
 
Top