OBJECTIVES
Electrical Distribution Systems
TERMINAL OBJECTIVE
1.0
Given the functional characteristics of an AC power source and the intended load,
DESCRIBE the necessary components and the wiring scheme to provide a safe Electrical
Distribution System.
ENABLING OBJECTIVES
1.1
EXPLAIN the following terms as they apply to Electrical Distribution Systems:
a.
Single (one-line) diagram
b.
Commercial or utility power
c.
Diesel power
d.
Failure-free power
e.
Neutral grounding
f.
Voltage class
g.
Protective relays
h.
Overlapping protective zones
1.2
DESCRIBE the protection provided by each of the following:
a.
Fuses
b.
Protective relays
1.3
STATE the purpose of circuit breakers.
1.4
Given a simple schematic of a circuit breaker control circuit, DESCRIBE the operation
of that breaker during remote operation and automatic tripping.
1.5
LIST the three most widely-used protective features that may be incorporated into a
circuit breaker control circuit.
1.6
STATE the function of motor controllers.
1.7
STATE three protective features (overloads) that may be incorporated into a motor
controller.
1.8
Given a simplified drawing of a motor controller, DESCRIBE the operation of that motor
controller.
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