Electric Motor Control Basics - Book - Page 36
Industrial Control Basics: Part 3, Starters
2. Rotor Resistance Starter
Rotor Resistance Starter
Industrial Control
Basics:
Part 1, Contactors
Industrial Control
Basics: Part 2,
Overload Relays
Industrial Control
Basics: Part 3,
Starters
The Benefits of Type E/F
Motor Protection
Circuit Breakers
In the rotor resistance starter, the three resistances are connected such that they are
in series with the rotor windings. This helps reduce the rotor current considerably, as
well as increases the motor torque.
The Advantages of Using Rotor Resistance Motor Starters:
• They are cost-effective.
• They have a simple speed control method.
• They provide low starting current, large starting torque, and large pull-out
torque.
Basic Pump Control:
Three Phase DOL Starter
Control of an Electric Pump
Applying Motor Control
in a Wastewater
Application
NEMA vs IEC Motor
Controls
Understanding
IP Ratings
36
