Kick-Start and Pedestal Voltage on a Soft Starter Explained
Pedestal voltage sets breakaway torque on a soft starter's ramp, and kick-start is a short pulse reserved for loads that resist the first instant of rotation.
Soft Starter Settings: Ramp Time, Initial Voltage, Current Limit
How initial voltage, current limit, and ramp time settings interact on a soft starter, and the commissioning sequence that avoids nuisance trips.
In-Line vs Inside-Delta Soft Starter Connection
In-line and inside-delta are the two ways to wire a soft starter's SCRs to a motor, and the choice changes how much current the starter frame actually has to...
Soft Starter Bypass Contactor: Why and When to Use One
A soft starter bypass contactor shorts out the SCRs once the motor is at speed, cutting conduction heat and letting the starter run continuously without a de...
Voltage Ramp vs Current Ramp vs Torque Control Soft Starters
A technical comparison of the three soft starter control modes, voltage ramp, current limit, and torque control, and which loads each one fits.
How a Soft Starter Works: SCR Phase-Angle Control
How SCR phase-angle firing controls voltage, current and torque during a soft starter ramp, and where that control hits its practical limits.
Soft Starter vs Autotransformer Starter Compared
A side-by-side comparison of soft starters and autotransformer (Korndorfer) starters covering torque, supply-side current, transition type, maintenance, cost...
Main Components of a Soft Starter: SCRs, Bypass and Control
A breakdown of the SCR power stage, control board, bypass contactor and sensing electronics that make up a soft starter, and how each affects sizing and prot...
Soft Starter vs DOL Starter: When Each Makes Sense
A side-by-side comparison of soft starters and DOL starters on inrush current, torque delivery, cost, and duty cycle so you can pick the right motor starting...
VFD vs Soft Starter: Key Differences for Motor Control Engineers
Compare VFD vs soft starter for motor control: starting torque, speed regulation, harmonics, IEC standards, and total cost of ownership. Shop at Stoklink.
