Amtrak AMT-2 Class C Vocabulary Flashcards

Electrical Terminology in Amtrak AMT-2 Class C

• Arc: A potentially destructive luminous flame or flash from electric current passing through air.
• Circuit: The complete path that electric current travels.
• Circuit Breaker: A safety device that interrupts the circuit when current exceeds safe levels.

Classification of Personnel

• Class A: Linemen and electricians qualified to work on electrification systems.
• Class A ET Trainee: An employee who has successfully completed their 12-month test and qualification.
• Class B: Mechanics trained to work on electrical equipment in electrified areas.
• Class C: Personnel allowed to perform work in electrified regions.

Electrical Safety Concepts

• Dead Section: A non-energized, grounded section of the catenary system.
• De-Energized (Dangerous to Life): Circuits disconnected from power sources are considered unsafe until properly tested and grounded.
• Minimum Approach Distance: Closest distance personnel or equipment can approach energized or de-energized, non-grounded circuits.

Equipment and Devices

• High Equipment: Equipment that brings employees within 3 feet of catenary wires.
• Impedance Bond: Separates signal track circuits from traction return circuits.
• Pantograph: Device used to collect electric power via contact wire.
• Transformer: Device for increasing or decreasing voltage.

Power Management

• Load Dispatcher: Employee responsible for monitoring and regulating power demands in the electrification system.
• Power Director: Employee overseeing power distribution in their territory.
• Rail Return: System combining jumpers, impedance bonds, and cables for electrical return from trains to substations.

Electrical Infrastructure

• Substation: Facility where electric power is stepped up or down.
• Transmission Lines: Wires transmitting power at 138,000 volts, located below static lines and above signal power lines.
• Catenary Span M.A.C Lines: Includes messenger, auxiliary, and contact wires.

Communication and Operation

• 3 Part Communication: Method where the sender communicates a message, the receiver repeats, and the sender confirms accuracy.
• Train Dispatcher: Responsible for train movements within a specific territory.

Catenary System Elements

• Third Rail: Electrified rail carrying direct current at 750 volts.
• Static Lines: Wires normally positioned at the top of the poles.
• Signal Power Line: Wires supplying power to signals, positioned between transmission lines and catenary spans.

Approach Distances

• Minimum Approach for Unidentified Wires: Class A - 8 feet; all others - 15 feet.
• Third Rail Minimum Approach for Qualified Personnel: 6 inches.
• Minimum Approach for De-Energized, Tested, and Grounded Circuits: Full contact allowed for all personnel.
• Minimum Approach for Wires Below 35k Volts (Class A, B, C): 3 feet.

This quiz contains essential vocabulary related to the Amtrak AMT-2 Class C, focusing on key electrical terms necessary for understanding and safety in electrical work. Each term includes a clear definition to aid in retention and comprehension. Test your knowledge and prepare for more advanced concepts in electrical engineering.