Louisiana Administrative Code
Title 28 - EDUCATION
Part CV - Bulletin 115-Trade and Industrial Education Content Standards Curriculum Framework: Drafting; Electricity; and Heating, Ventilating, Air Conditioning, and Refrigeration
Subpart 5 - Electricity
Chapter 17 - U.S. Electrical Construction Industry Trades Skill Standards and Certification
Section CV-1723 - Motors, Motor Controllers and Process Controllers

Universal Citation: LA Admin Code CV-1723

Current through Register Vol. 50, No. 9, September 20, 2024

A. Function, Operation, and Characteristics of Various Types of Motors (AC, DC, Dual Voltage, Repulsion, Universal, 3-Phase, Squirrel Cage, Synchronous):

1. physical parts of various motors;

2. utilize information sheets, plans, schematics, and motor nameplates to gain information;

3. motor losses;

4. starting and operating characteristics;

5. methods to identify windings in DC motors;

6. means for providing for field failure, current limit, voltage and speed control;

7. block diagrams to demonstrate power supplies, armature, field and control features;

8. torque, locked rotor current, no-load speed, and slip;

9. reasons for low-voltage starting;

10. function, operation, and characteristics of stepping motors.

B. Proper Techniques for Motor Installations:

1. necessary calculations for electrical requirements per code;

2. correct power factor;

3. proper wire type and size;

4. appropriate connections;

5. how various motors can be made to run at different speed or in reverse direction:
a. schematics;

b. connections to reverse or change speeds;

6. identify unmarked motor leads;

7. steps for proper handling of motors:
a. checks for mechanical defects;

b. factors to be checked when a motor arrives at jobsite;

c. methods for putting motor into storage.

C. Function, Operation, and Characteristics of Motor Controllers, Circuits and Devices:

1. ways and means of starting and stopping motors;

2. operation of magnetic coil;

3. use of magnetic starters and controllers;

4. correct sizing of magnetic starters and controllers;

5. difference between starters and controllers;

6. function, operation, and characteristics of overload protective devices:
a. thermal overload;

b. magnetic overload;

7. schematics for various control circuits;

8. two-wire control circuits;

9. three-wire control circuits;

10. interlocking methods;

11. reversing and sequential controllers;

12. jogging, inching, plugging;

13. multiple start-stop controls and selector switches;

14. phase failure relays;

15. various manual and automatic speed control techniques;

16. function, operation, and characteristics of variable frequency drives;

17. function, operation, characteristics, and installation procedures for programmable logic controls:
a. function of central processing unit;

b. memory types and sizes;

c. user and storage memory;

d. back-up batteries;

e. peripheral devices;

18. ladder diagrams;

19. function, operation, and characteristics of timers, counters, sequencers;

20. utilize appropriate manuals and information for start-up, maintenance and testing;

21. utilize schematics for manual starters, automatic starters, speed regulators and controllers.

D. Function, Operation, and Characteristics of Switches and Relays:

1. schematics including switches and relays;

2. installation and connection methods for various switch types;

3. installation and connection methods for various relays;

4. function, operation, and characteristics of electronic sensor and pilot devices;

5. function, operation, and characteristics of control transformers:
a. leads of control transformers;

b. proper sizing of control transformers.

E. Mechanical Connections to Utilize Motors:

1. operation of mechanical clutches and magnetic drives;

2. direct and offset drives;

3. proper pulley sizes required.

F. Process Control System and Devices:

1. operating requirements followed by manual and automatic controllers;

2. function, operation, characteristics, and installation of:
a. closed loop and open loop systems;

b. feedback control;

c. proportional control;

d. integral control;

e. derivative control;

3. block diagrams including control systems and devices;

4. function, operation, and characteristics of sensors and transmitters.

AUTHORITY NOTE: Promulgated in accordance with R.S. 17:6(A)(10) and R.S. 17:10.

Disclaimer: These regulations may not be the most recent version. Louisiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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