Electric Motor Control Basics - Book - Page 37
Industrial Control Basics: Part 3, Starters
Industrial Control
Basics:
Part 1, Contactors
3. Stator Resistance Starter
Stator Resistance Starter
Industrial Control
Basics: Part 2,
Overload Relays
Industrial Control
Basics: Part 3,
Starters
The Benefits of Type E/F
Motor Protection
Circuit Breakers
The stator resistance starter consists of three resistors, which are connected in series
with each phase of the stator windings. At each resistor, a voltage drop is caused, so
it becomes necessary to apply low voltage to each phase. These resistances are set
at the start or maximum position during the motor start stage. The starting current is
kept at a minimum in this type of starter. Also, the starting torque to the motor needs
to be maintained.
The Advantages of Using Stator Resistance Motor Starters:
• They are suitable for use in speed control applications.
• They have extremely flexible starting characteristics.
• They provide smooth acceleration.
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
37
