Electric Motor Control Basics - Book - Page 12
Industrial Control Basics: Part 1, Contactors
Part 1, Contactors
IEC UTILIZATION CATEGORIES
LOW VOLTAGE UTILIZATION CATEGORIES
Non-inductive or slightly inductive loads, resistance furnaces.
Slip-ring motors: starting, switching off.
Squirrel-cage motors: starting, switching off motors during running.
Squirrel-cage motors: starting, plugging1, inching2.
Switching of electric discharge lamp control.
Switching of incandescent lamps.
Switching of transformers.
Switching of capacitor banks.
Slightly inductive loads in household appliances and similar applications.
Motor-loads for household applications.
Hermetic refrigerant compressor motor control with manual resetting of overload releases.
Hermetic refrigerant compressor motor control with automatic resetting of overload releases.
Control of resistive loads and solid-state loads with isolation by optocoupler.
Control of solid-state loads with transformer isolation.
Control of small electromagnetic loads.
Control of a.c. electromagnetic loads.
Connecting and disconnecting under no-load conditions.
Switching of resistive loads, including moderate overloads.
Switching of mixed resistive and inductive loads, including moderate overloads.
Switching of motor loads or other highly inductive loads.
Protection of circuits, with no rated short-time withstand current.
Protection of circuits, with a rated short-time withstand current.
Basics: Part 2,
Basics: Part 3,
The Benefits of Type E/F
Basic Pump Control:
Three Phase DOL Starter
Control of an Electric Pump
Applying Motor Control
in a Wastewater
NEMA vs IEC Motor