Electric Motor Control Basics - Book - Page 97
Understanding IP Ratings
corrosion resistance and construction practices), the two charts aren’t a side-by-side
comparison, though they do share similarities.
Industrial Control
Basics:
Part 1, Contactors
The NEMA ratings range from 1 to 13. For example, you should use an electrical
component with a NEMA rating of 1 in an indoor environment only, to protect it from a
small amount of falling dirt.
Industrial Control
Basics: Part 2,
Overload Relays
How IP Ratings Help Comparison Efforts
Industrial Control
Basics: Part 3,
Starters
Staring at two electrical components that appear so similar you’re having a difficult time
discerning which one you should pick? Keeping your use case scenario in mind, take a
look at the IP rating of each!
The Benefits of Type E/F
Motor Protection
Circuit Breakers
Remember, the larger the value of each digit is, the more protection the component
receives. For instance, a component rated IP55 is better protected than one rated as
IP43.
Basic Pump Control:
Three Phase DOL Starter
Control of an Electric Pump
When you’re procuring industrial electrical equipment, you’ll need to consider where
you plan to install it. What (and who) do you need to protect it against? Are there any
environmental considerations to keep in mind?
Armed with this knowledge, you can make an educated decision on which part is the
best-suited for the job.
Applying Motor Control
in a Wastewater
Application
NEMA vs IEC Motor
Controls
Understanding
IP Ratings
97
