Squirrel Cage

Direct-on-line

500/600

100/120

High starting current
Quick start, high torque

Star Delta

170/200

30/40

Fixed Torque. Light starting with reduced motor current.
Requires 6 terminal motor.

125/150
210/250
320/380

25/30
42/50
64/77

Reduced starting current.
Tappings selected to suite load & torque.
Smooth starting.

Soft Start

Variable

Variable

Reduced starting current.
Smooth controlled run up.
eliminates mechanical shock loads. Reduced maintenance.
Can save energy.

Slip Ring

Stator Rotor

Depending on resistance grading and number of steps these figures may have values from 50% to 250%

Smooth starting with high toque available for acceleration and low starting current