NEMA Rotor Designs

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This video cover the four different NEMA Rotor designs and their specific characteristics based on how they are constructed.
0:00 Intro
0:38 Design A
2:38 Design B
4:06 Design C
6:21 Design D
Here is a video all about Rotor Parameters: • Rotor Parameter Relati...
Here is the video referenced about Speed Regulation: • Speed Regulation of a ...
3-Phase Induction Motors Playlist: • 3-Phase Motors
#motor #SCIM

Пікірлер: 8

@daveg.4862 2 жыл бұрын

Fantastic Explanation. Every Oil well and Punch press uses a design D motor. Large Screw Header's as well. Many painful lessons of electrical maintenance engineers trying to replace a design D motor with new A or B. Many times it cant be done, even with an AC drive. Reciprocating loads, Heavy Fly-wheels, and Large startup torque prove the grave yard to the New Drives. Its Best to rewind the old dogs, or oversize drive and motor, with DB resistor, and overvoltage Supression Software in the Drive.

@miramich420 3 жыл бұрын

great video zack solid lecture love your videos they help alot!

@greghawkins1025 3 жыл бұрын

Thank you for a well done, informative, & easy to understand video. You would make a good school teacher or college professor.

@ZackHartle 3 жыл бұрын

Thanks a lot for watching!

@habibmohammad2875 2 жыл бұрын

super

@khanjan-ck6bz 2 жыл бұрын

why the inductance of class A is low and Class B is High?

@Gretsch0997 10 ай бұрын

Rotor bar Inductance is greatly affected by the amount of iron around each bar. In the Design “A” rotor, the bars are close to the surface, meaning they are not as exposed to the magnetic effect provided by the iron. Therefore… less iron exposure…less bar inductance…less rotor bar impedance. Thus … higher current flow through each bar. As for the “B” rotor, each bar is exposed to MORE iron. In which case the inductive effect is opposite.