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Motors
How this Course Works
How this Class Works-Syllabus and Description
Review Questions-How this Class Works
UNIT 29- DC Generators
Intro to Motors Course (6:00)
Overview and Layout (5:31)
The Importance of Magnetism and Induction (2:51)
Magnetism & Electricity (5:46)
Magnetism & Electricity (PART 2) (7:42)
Magnetism & Electricity- Review (9:50)
Electricity Creates Magnetism (8:09)
Understanding the Magnetic Field (10:02)
Why is a Coil So Special? (12:04)
Flemings Left and Right Hand Rules (8:45)
Magnetic Field in a Coil (10:37)
Intro to Unit 29 (14:01)
Understanding the Induced Voltage (15:50)
How then does it become DC Output? (14:21)
A Helpful Video (14:57)
Review of the Video's Concepts (12:44)
Understanding the Armature Windings (8:17)
Armature Winding- Connection Types (12:40)
VIDEO- Demonstration of How to Wind a Motor (13:52)
Review of the Video (12:16)
Video- Removing and Replacing Brushes (7:17)
Video- Prepping and Seating the Brushes (10:10)
Setting the Neutral Plane (6:38)
Motors with Permanent Magnets Compared to Electromagnets (10:47)
Understanding a Magneto (9:24)
Two Field Winding Types (11:19)
Understanding Schematics of Field Windings (11:05)
Series Motors with Peter Vree (8:45)
Shunt Motors with Peter Vree (7:32)
Excitation Current (10:23)
Introduction to Compound Generators (11:58)
Understanding Compounding Effects (6:38)
Video of Compound Motors Demonstrated (11:40)
Video of Differential Compounding Demonstrated (7:29)
Video of Troubleshooting Loose Connections (13:53)
Countertorque (7:01)
Armature Reaction & Commutator Windings (15:12)
Paralleling Generators (10:37)
Paralleled Generators Introduced (10:56)
UNIT 29
REVIEW QUESTIONS
UNIT 30- DC Motors
Intro to DC Motors (5:27)
Basic Operation Principles of a DC Motor (5:44)
Basic Principles of a Motor Demonstrated (12:19)
Another DC Motor Video (17:35)
Operation Principles Reviewed (7:32)
Shunt Motors Reviewed (14:55)
Overview of Series and Compound Motors (27:00)
Speed Control (9:48)
The Field Loss Relay (7:47)
Understanding Horse Power (12:41)
Brushless Motors Introduced (15:43)
Brushless Motor Video #1 (8:16)
Brushless Motors- A Deeper look- VIDEO 2 (6:58)
The Right Hand Motor Rule (5:09)
UNIT 30
REVIEW QUESTIONS
UNIT 31- Three Phase Alternators
Intro to Unit 31 (11:08)
Understanding the Main Armature Types (20:20)
Alternator Construction and Operation Video (10:07)
Engineering Mindset Video Demonstration (19:27)
The Rotor and Excitation Current (15:46)
Understanding the Brushless Exciter (12:52)
Cooling, Frequency and Output Voltage (11:12)
Paralleling Alternators Introduced (7:11)
Synchronizing Motors Demonstrated (17:44)
Field Discharge Protection (6:45)
UNIT 31
REVIEW QUESTIONS
UNIT 32- Three Phase Motors
Intro to Unit 32 (10:26)
2- Introduction to the 3 Phase Motor- VIDEO (24:56)
Introducing the Rotating Magnetic Field (26:38)
Introduction to the Rotating Magnetic Field VIDEO #1 (6:51)
Further Understanding of the Induction Motor Rotating Field (19:04)
Coolest Video Ever of Rotating Magnetic Field (6:43)
Understanding Synchronous Speed (10:12)
Determining the Rotation of 3 Phase Motors (9:25)
Multi Voltage Motor Connections (16:12)
Delta-Wye Cheat Sheet (14:02)
Squirrel-Cage Motors- A Deeper Look (38:20)
Wound Rotor Induction Motors (10:49)
Synchronous Motors (21:17)
Selsyn Motors Introduced (6:01)
Practical Use of Selsyn Motors (14:08)
UNIT 32
REVIEW QUESTIONS
UNIT 33- SINGLE PHASE MOTORS
Intro to Unit 33 (10:04)
Intro to Split Phase Motors (12:15)
Resistance Start- Induction Run Motors (8:19)
Capacitor Start- Induction Run Motors (6:18)
Dual Voltage- Split Phase Motors (6:26)
Capacitor Start- Capacitor Run Motors (10:04)
Shaded Pole Motors (16:52)
Various Other Motors Introduced (11:34)
Stepping Motors (9:12)
Univeral Motors (5:37)
UNIT 33
REVIEW QUESTIONS
ARTICLE 430- Motors
Intro to the NEC Portion of This Course (4:36)
Intro and Overview to Article 430 (16:06)
Familiarization of Motor Starter Components (14:32)
Understanding Overcurrent Conditions (20:47)
Understanding What the Different Parts of 430 Govern (14:04)
Understanding FLA, FLC and LRC (3:33)
Determining Ampacity and Motor Rating 430.6 (9:43)
Introduction to The Tables (17:49)
Practice Choosing and Reading The Tables (15:48)
Determining the Highest or Lowest Rated Motor 430.17 (12:11)
Determining the Ampacity of Motor Conductors- SINGLE MOTOR- 430.22 (14:28)
Practice Solving Single Motor Ampacities (10:01)
Non Continuous Duty- SINGLE MOTOR (17:25)
Practice Using Table 430.22 E (15:26)
Calculating for Multiple Motors (11:33)
Practice Calculating Multiple Motor Ampacities (9:11)
Which Parts Govern Which Components (8:57)
Intro and Overview of Part 3 (11:17)
Understanding Part 3 Continued (10:34)
Calculating OLP for Continuous Duty Motors (13:49)
Practice Continued (15:29)
Review and Practice Continued (11:29)
Alternative OLP Methods (11:05)
When Do you use Paragraph C for Overload Protection Calculations (15:25)
Individual Motors Branch Circuit Protection (16:45)
Practice Calculating Short Circuit Protection (8:32)
Why is such a BIG breaker permitted (16:37)
Practice Sizing SC and GF Protection for Branch Circuits (12:11)
One more Practice Just for fun (11:34)
Sizing Feeder Protection Introduced (15:43)
Feeder Protection Practice Problem (4:28)
Feeder Protection When Non Motor Loads are Present (6:02)
Disconnecting Means (15:01)
Review of Article 430 (4:34)
Conclusion to Motors Class (1:34)
Time to schedule your proctored exam
FINAL EXAM- DO NOT OPEN UNTIL IN THE PRESENCE OF AN APPROVED PROCTOR
FINAL EXAM- DO NOT OPEN UNTIL IN THE PRESENCE OF AN APPROVED PROCTOR
Video- Prepping and Seating the Brushes
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