Equipment Selection
I. DESIGN OF THE SECONDARY DISTRIBUTION SYSTEM
A. Show the Distribution Map of the following:
1. Location of prospective customer.
2. Location of the distribution.
3. Service Drop from pole to customer.
4. Route of the secondary line.
B. Determine the capacity and location of the distribution transformer.
C. Determine the size of the secondary wires.
Click here for the design notes.
II. DESIGN OF THE PRIMARY DISTRIBUTION SYSTEM
A. Determine the size of primary wire
B. Draw the Electrical Layout and Schematic Wiring Diagram of the transformer vault.
C. Show the route of the primary line.
D. Draw the Schematic Sinle-Line Diagram of the Primary Line.
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III. DESIGN OF THE TRANSFORMER VAULT FOR INDUSTRIAL CUSTOMERS
A. Determine the size and rating of the following electrical equipment:
1. Primary porcelain fuse cut-out.
2. Primary power cable and conduit.
3. Single-phase, 60-cycle distribution transformer.
4. Secondary bus bars.
5. Current transformer for metering.
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IV. DESIGN OF THE OUTDOOR SUBSTATION FOR INDUSTRIAL CUSTOMERS
A. Determine the size and rating of the following electrical equipment:
1. Primary distribution line, type of lightning arrester.
2. Primary line wires/cables and conduit.
3. Primary fuse cut-out.
4. Potential transformers.
5. Secondary lead to transformer.
6. Secondary bus bars.
B. Draw the construction and connection diagram of the substation showing the equipment and metering properly labeled.
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V. DETERMINE THE NUMBER/CAPACITY OF THE GENERATING EQUIPMENT
A. Determine and draw the load samples of the different classes of loads to be served.
B. Draw the Load Graph of the whole three-phase system.
Click here for the design notes.
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