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