DBS II

RAM Industries DBS II Refrigeration Solid State Starter

The DBS (digital bypass solid state) reduced-voltage starter is a microprocessor controlled motor starting device which utilizes six SCRs (silicon controlled rectifiers) to electronically reduce the applied voltage to an AC induction motor, allowing the motor to start at a reduced current. Because the DBS accelerates the motor in a smooth stepless manner, it reduces drop in the supply voltage as well as mechanical shock on the driven equipment, that is normally experienced with two-step, electromechanical, reduced-voltage starting methods.

The DBS can be programmed to provide a gradual build up of torque, from zero to almost full motor locked rotor torque, or to limit starting currents to a constant value, which prevents an excessive voltage drop during motor starting.