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ETT Study Guide Book 2: Fundamentals and Theory
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E. Resistance Testing

1. Methods and Procedures 2, 3, 4

Employ methods and procedures for basic resistance tests and analyze results

Essential Reading

  • Megger Guide to Low-Resistance Testing
  • Achieving (and maintaining) electrical connection tightness
  • Recommended Bolt Torque for Electrical Connections (ANSI/NETA MTS 2019 Table 100.12)

Bridge Circuits

  • Bridge Circuits
  • Kelvin (4-wire) Resistance Measurement
  • Wheatstone Bridge

Low Resistance (DLRO) Testing

  • Making the right choice for low resistance
  • Continuity and Low Resistance Testing
  • Modern ART (Accuracy in Resistance Testing)
  • Preventing Long-term Damage to Equipment
  • Interpreting DLRO results
  • Contact resistance tester doesn't display any reading
  • Contact resistance test producing CT secondary current
Last Update: Dec 27, 2022
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Guide Table of Contents, Book 2
Study Guide Index
  1. Book 2 Overview
  2. A. Fundamentals of Electricity
  3. B. Electrical Calculations
  4. C. AC and DC Circuits
  5. D. Insulation Testing
  6. E. Resistance Testing
  7. F. Thermographic Survey
  8. G. Current Testing
  9. H. System Tests Analysis and Operation
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