Electrical Engineering ⇒ Topic : Stator Rheostat Starter advantages and disadvantages

Advantages :

• High power factor during- start.
• Smooth acceleration.
• Less expensive than auto-transformer starter in lower output ratings.
• Closed transition starting.

Disadvantages :

• Heat is given off by the resistors.
• Expensive resistors are required because starting duration usually exceeds 5 seconds.
• Low torque efficiency