Portland Community College | Portland, Oregon Portland Community College

CCOG for DST 212 Winter 2024

View archive version »
Course Number:
DST 212
Course Title:
Voltage Regulation
Credit Hours:
Lecture Hours:
Lecture/Lab Hours:
Lab Hours:

Course Description

Introduces the fundamentals of voltage regulation. Covers the function and operation of various Caterpillar automatic voltage regulators. Includes how to safely and accurately install and adjust regulators for proper operation. Prerequisites: DST 211.

Intended Outcomes for the course

Upon successful completion of the course students should be able to:

  • Explain safety considerations when working on a generator.
  • Explain the function and operation of an automatic voltage regulator.
  • Compare advantages and disadvantages of different power inputs to the voltage regulator.
  • Explain voltage regulator settings.
  • Explain variables which need to be addressed when changing a voltage regulator.
  • Compare voltage regulators' capabilities and benefits.
  • Interpret voltage regulator schematics and drawings.
  • Access voltage regulator service and information resources.
  • Install and adjust voltage regulators for proper operation.
  • Tune the voltage regulator to respond within the allowable limits.

Course Activities and Design

This is an outcome-based course utilizing a lecture/lab format. This course includes videos, assignments, demonstrations, lectures, and hands on learning. The course will be taught using Caterpillar equipment and curriculum.

Outcome Assessment Strategies

•             Multiple choice, true/false, fill in the blank, short answer and essay testing

•             Hands-on practical testing

•             Daily lab assignments as defined by Caterpillar Curriculum / weekly and term projects

•             Attendance

•             Work ethics

Course Content (Themes, Concepts, Issues and Skills)

Learn safety hazards with voltage regulators

Learn Personal Protective Equipment (PPE) associated with electrical safety

Learn zero voltage verification 

Learn lockout procedure

Learn warning and danger label identification

Learn principles of voltage regulation

Learn basic automatic voltage regulation operations

Learn the responsibility of the voltage regulation in the system

Learn direct excited systems

Learn brush-less systems

Learn automatic voltage regulator power sourcing

Learn self excited systems

Learn AREP (Aux winding/internally excited)

Learn PMG

Learn sensing methods

Learn V/HZ profiles

Learn Knee Frequency

Learn LAM (load acceptance module)

Learn AVR (automatic voltage regulator) gain settings

Learn AVR droop settings

Learn AVR wiring

Learn AVR tuning

Learn specific Caterpillar application AVR to include: