This paper introduces a starting equipment which cnsists of programmable controller and a self coupling transformer and the application of this equipment in the starting and controlling circuit of several motors.
The paper presents the principle,in stallation and effect of a slab caster with three secondary cold air blowers which uses a set of type DWR-1 soft start equipment with three dragged by one.
The article discusses the problems existing in traditional starting machine, explains the principle and classification of softstart technology, and introduces several types of soft start and their application beginning with the actuality of asynchronous motor start.