Maricopa Community Colleges  IND208   20002-20012 
Official Course Description:   MCCCD Approval:  12/14/99
IND208      20002-20012 LEC 1 Credit(s) 1 Period(s)
Advanced Electrical Topics: Medium Voltage
Safety practices while working with medium voltage equipment. Circuit interrupting equipment and circuit breakers. Installation, maintenance and care of electrical power devices. Handling and storage of insulating media. Testing of specific electrical devices. Prerequisites: None.
 
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MCCCD Official Course Competencies:
 
IND208   20002-20012 Advanced Electrical Topics: Medium Voltage
1. Demonstrate an understanding of specific electrical safety practices involved with medium voltage equipment. (I)
2. Identify and demonstrate an understanding of circuit interrupting equipment. (II)
3. Identify four general classifications of medium voltage circuit breakers. (III)
4. Identify and demonstrate an understanding of medium voltage switchgear. (IV)
5. Demonstrate proper installation and maintenance of electric power components of medium voltage equipment. (V)
6. Identify, handle, and store insulating media used by power circuit breakers. (VI)
7. Clean external surfaces of bushings and check for leakage, cracks and loose bolts. (VII)
8. Perform safety and performance tests on specific electrical devices. (VIII)
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MCCCD Official Course Outline:
 
IND208   20002-20012 Advanced Electrical Topics: Medium Voltage
    I. Electrical Safety
        A. Personal protection equipment
        B. Insulated rubber gloves
        C. Hot sticks
        D. Distance
        E. Precautions
        F. Cover-up
        G. De-energizing and grounding equipment
        H. Switchgear
        I. Proximity high-voltage detector
      II. Circuit Interrupting equipment
          A. Fuses
          B. Switches
            1. types
            2. operation
          C. Components
          D. Construction
          E. Operations
          F. Control circuits
          G. Maintenance
        III. Medium voltage circuit breakers
            A. Air circuit breakers (ACB)
            B. Oil circuit breakers (OCB)
            C. Vacuum circuit breakers (VCB)
            D. Gas circuit breakers (GCB)
          IV. Switchgear
              A. Enclosures
                1. front section
                2. bus section
                3. cable section
            V. Installation, maintenance and care of equipment
                A. Oil switches
                B. Air circuit breakers
                C. Oil circuit breakers
                D. Vacuum circuit breakers
                E. Gas circuit breakers
                F. Contact maintenance
                G. Adjustments
                H. Operating mechanism
              VI. Insulating Mediums and Handling
                  A. Gas
                  B. Oil
                  C. Air
                  D. Vacuum
                VII. Bushing Maintenance
                    A. Clean surface
                    B. Leakage
                    C. Cracks
                    D. Bolts
                  VIII. Testing
                      A. Categories
                        1. initial
                        2. routine
                        3. special
                      B. General
                        1. resistance
                        2. over potential
                        3. power factor
                        4. temperature
                      C. Equipment
                        1. circuit breakers
                        2. bushings
                        3. polarity
                        4. radio
                        5. transformers
                        6. secondary excitation
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